METEOROLOGICAL DATA FOR 2006 Round Rock Latitude: 30° 32' 55" N Longitude: 97° 37' 34" W Elevation: 709 ft Time Zone: Central +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Year| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |TEMPERATURE | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Daily Maximum | | | | | | | | | 87.1| 82.5| 74.1| 64.2| 77.0| | -Daily Minimum | | | | | | | | | 61.2| 59.0| 49.4| 41.8| 52.8| | -Monthly | | | | | | | | | 74.1| 70.8| 61.8| 53.0| 64.9| | -Monthly Dewpt. | | | | | | | | | 54.3| 57.4| 47.2| 40.5| 49.8| | Extremes | | | | | | | | | | | | | | | -Highest | | | | | | | | | 93.2| 92.9| 89.7| 80.9| 93.2| | -Date | | | | | | | | | 30| 2| 10| 18| SEP 30| | -Lowest | | | | | | | | | 55.4| 42.2| 31.6| 24.4| 24.4| | -Date | | | | | | | | | 26| 20| 30| 4| DEC 4| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |DEGREE DAYS | | | | | | | | | | | | | | | Heating Base 65°F | | | | | | | | | 0| 35| 154| 379| 568| | | | | | | | | | | | | | | | | Cooling Base 65°F | | | | | | | | | 65| 223| 69| 17| 374| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |SOLAR RADIATION (W/m2) | | | | | | | | | 242.0| 173.6| 142.2| 110.4| 167.0| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |NUMBER OF DAYS | | | | | | | | | | | | | | | Sunrise to Sunset | | | | | | | | | | | | | | | -Clear | | | | | | | | | 6| 22| 25| 23| 76| | -Partly Cloudy | | | | | | | | | 1| 4| 1| 2| 8| | -Cloudy | | | | | | | | | 0| 5| 4| 6| 15| | | | | | | | | | | | | | | | | Precipitation | | | | | | | | | | | | | | | .01 inches or more | | | | | | | | | 0| 9| 3| 11| 23| | | | | | | | | | | | | | | | | Snow, Ice pellets | | | | | | | | | | | | | | | 1.0 inches or more | | | | | | | | | 0| 0| 0| 0| 0| | | | | | | | | | | | | | | | | Thunderstorms | | | | | | | | | 1| 3| 1| 1| 6| | | | | | | | | | | | | | | | | Heavy Fog, visibility| | | | | | | | | | | | | | | 1/4 mile or less | | | | | | | | | 0| 1| 1| 3| 5| | | | | | | | | | | | | | | | | Temperature | | | | | | | | | | | | | | | -Maximum | | | | | | | | | | | | | | | 90°F and above | | | | | | | | | 3| 9| 1| 0| 13| | 32°F and below | | | | | | | | | 0| 0| 0| 0| 0| | -Minimum | | | | | | | | | | | | | | | 32°F and below | | | | | | | | | 0| 0| 1| 6| 7| | 0°F and below | | | | | | | | | 0| 0| 0| 0| 0| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |PRESSURE | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Monthly | | | | | | | | |30.033|29.964|30.063|30.174| 30.059| | Extremes | | | | | | | | | | | | | | | -Highest | | | | | | | | | 30.22| 30.36| 30.53| 30.76| 30.76| | -Date | | | | | | | | | 25| 23| 20| 8| DEC 8| | -Lowest | | | | | | | | | 29.84| 29.43| 29.45| 29.74| 29.43| | -Date | | | | | | | | | 27| 16| 14| 29| OCT 16| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |RELATIVE HUMIDITY (%) | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Monthly | | | | | | | | | 53.0| 67.7| 65.0| 67.9| 63.4| | -Local Time | | | | | | | | | | | | | | | Hour 01 | | | | | | | | | 67| 78| 77| 78| 75| | Hour 07 | | | | | | | | | 79| 85| 82| 84| 83| | Hour 13 | | | | | | | | | 36| 52| 46| 49| 46| | Hour 19 | | | | | | | | | 41| 58| 61| 64| 56| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |PRECIPITATION | | | | | | | | | | | | | | | Water Equivalent | | | | | | | | | | | | | | | -Total | | | | | | | | | 0.00| 7.67| 0.54| 4.53| 12.74| | -Greatest (24 hrs) | | | | | | | | | 0.00| 3.53| 0.48| 2.26| 3.53| | -Date | | | | | | | | | 24| 10-11| 30| 29-30|OCT 10-11| | | | | | | | | | | | | | | | | Snow, Ice pellets | | | | | | | | | | | | | | | -Total | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | -Greatest (24 hrs) | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | -Date | | | | | | | | | | | | | | +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |WIND | | | | | | | | | | | | | | | Resultant | | | | | | | | | | | | | | | -Direction | | | | | | | | | 246| 310| 292| 301| 290| | -Speed | | | | | | | | | 0.3| 0.3| 0.8| 0.5| 0.4| | Average Speed | | | | | | | | | 1.2| 1.4| 1.9| 1.6| 1.5| | Maximum One-minute | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Direction | | | | | | | | | NE| NW| NW| NW| NW| | -Speed | | | | | | | | | 10| 20| 22| 17| 22| | -Date | | | | | | | | | 28| 10| 15| 25| NOV 15| | Peak Gust | | | | | | | | | | | | | | | -Direction | | | | | | | | | W| NNW| NNW| WNW| NNW| | -Speed | | | | | | | | | 19| 30| 36| 31| 36| | -Date | | | | | | | | | 27| 10| 15| 25| NOV 15| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+MEANS AND EXTREMES* Round Rock Latitude: 30° 32' 55" N Longitude: 97° 37' 34" W Elevation: 709 ft Time Zone: Central +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Year| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |TEMPERATURE | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Daily Maximum | | | | | | | | | 87.1| 82.5| 74.1| 64.2| 77.0| | -Daily Minimum | | | | | | | | | 61.2| 59.0| 49.4| 41.8| 52.8| | -Monthly | | | | | | | | | 74.1| 70.8| 61.8| 53.0| 64.9| | -Monthly Dewpt. | | | | | | | | | 54.3| 57.4| 47.2| 40.5| 49.8| | Extremes | | | | | | | | | | | | | | | -Record Highest | | | | | | | | | 93.2| 92.9| 89.7| 80.9| 93.2| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| SEP 2006| | -Record Lowest | | | | | | | | | 55.4| 42.2| 31.6| 24.4| 24.4| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| DEC 2006| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |MEAN DEGREE DAYS | | | | | | | | | | | | | | | Heating Base 65°F | | | | | | | | | 0| 35| 154| 379| 568| | | | | | | | | | | | | | | | | Cooling Base 65°F | | | | | | | | | 65| 223| 69| 17| 374| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |SOLAR RADIATION (W/m2) | | | | | | | | | 242.0| 173.6| 142.2| 110.4| 167.0| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |MEAN NUMBER OF DAYS | | | | | | | | | | | | | | | Sunrise to Sunset | | | | | | | | | | | | | | | -Clear | | | | | | | | | 6.0| 22.0| 25.0| 23.0| 76.0| | -Partly Cloudy | | | | | | | | | 1.0| 4.0| 1.0| 2.0| 8.0| | -Cloudy | | | | | | | | | 0.0| 5.0| 4.0| 6.0| 15.0| | | | | | | | | | | | | | | | | Precipitation | | | | | | | | | | | | | | | .01 inches or more | | | | | | | | | 0.0| 9.0| 3.0| 11.0| 23.0| | | | | | | | | | | | | | | | | Snow, Ice pellets | | | | | | | | | | | | | | | 1.0 inches or more | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | | | | | | | | | | | | | | | | Thunderstorms | | | | | | | | | 1.0| 3.0| 1.0| 1.0| 6.0| | | | | | | | | | | | | | | | | Heavy Fog, visibility| | | | | | | | | | | | | | | 1/4 mile or less | | | | | | | | | 0.0| 1.0| 1.0| 3.0| 5.0| | | | | | | | | | | | | | | | | Temperature | | | | | | | | | | | | | | | -Maximum | | | | | | | | | | | | | | | 90°F and above | | | | | | | | | 3.0| 9.0| 1.0| 0.0| 13.0| | 32°F and below | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | -Minimum | | | | | | | | | | | | | | | 32°F and below | | | | | | | | | 0.0| 0.0| 1.0| 6.0| 7.0| | 0°F and below | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |MEAN PRESSURE | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Monthly | | | | | | | | |30.033|29.964|30.063|30.174| 30.059| | Extremes | | | | | | | | | | | | | | | -Record Highest | | | | | | | | | 30.22| 30.36| 30.53| 30.76| 30.76| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| DEC 2006| | -Record Lowest | | | | | | | | | 29.84| 29.43| 29.45| 29.74| 29.43| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| OCT 2006| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |RELATIVE HUMIDITY (%) | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Monthly | | | | | | | | | 53.0| 67.7| 65.0| 67.9| 63.4| | -Local Time | | | | | | | | | | | | | | | Hour 01 | | | | | | | | | 67| 78| 77| 78| 75| | Hour 07 | | | | | | | | | 79| 85| 82| 84| 83| | Hour 13 | | | | | | | | | 36| 52| 46| 49| 46| | Hour 19 | | | | | | | | | 41| 58| 61| 64| 56| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |PRECIPITATION | | | | | | | | | | | | | | | Water Equivalent | | | | | | | | | | | | | | | -Mean | | | | | | | | | 0.00| 7.67| 0.54| 4.53| 12.74| | -Maximum Monthly | | | | | | | | | 0.00| 7.67| 0.54| 4.53| 7.67| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| OCT 2006| | -Minimum Monthly | | | | | | | | | 0.00| 7.67| 0.54| 4.53| 0.00| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| SEP 2006| | -Greatest (24 hrs) | | | | | | | | | 0.00| 3.53| 0.48| 2.26| 3.53| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| OCT 2006| | | | | | | | | | | | | | | | | Snow,Ice pellets,Hail| | | | | | | | | | | | | | | -Mean | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | -Maximum Monthly | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| SEP 2006| | -Minimum Monthly | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| SEP 2006| | -Greatest (day) | | | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| SEP 2006| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ |WIND | | | | | | | | | | | | | | | Resultant | | | | | | | | | | | | | | | -Direction | | | | | | | | | 246| 310| 292| 301| 290| | -Speed | | | | | | | | | 0.3| 0.3| 0.8| 0.5| 0.4| | Average Speed | | | | | | | | | 1.2| 1.4| 1.9| 1.6| 1.5| | Maximum One-minute | | | | | | | | | | | | | | | Average | | | | | | | | | | | | | | | -Direction | | | | | | | | | NE| NW| NW| NW| NW| | -Speed | | | | | | | | | 10| 20| 22| 17| 22| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| NOV 2006| | Peak Gust | | | | | | | | | | | | | | | -Direction | | | | | | | | | W| NNW| NNW| WNW| NNW| | -Speed | | | | | | | | | 19| 30| 36| 31| 36| | -Year | | | | | | | | | 2006| 2006| 2006| 2006| NOV 2006| +-------------------------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ *NOTE: Length of record: September 2006 to December 2006. PRECIPITATION +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | Year | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | 2006 | | | | | | | | | 0.00| 7.67| 0.54| 4.53| 12.74 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ SNOWFALL +---------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | Year | JUL | AUG | SEP | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | Total | +---------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | 2005-06 | | | | | | | 0.0| 0.0| 0.0| 0.0| 0.0| 0.0| 0.0 | | 2006-07 | 0.0| 0.0| 0.0| 0.0| 0.0| 0.0| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +---------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ TEMPERATURE +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | Year | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | 2006 | | | | | | | | | 74.1| 70.8| 61.8| 53.0| 64.9 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ HEATING DEGREE DAYS: Base 65°F +---------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | Year | JUL | AUG | SEP | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | Total | +---------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | 2005-06 | | | | | | | | | | | | | 0 | | 2006-07 | | | 0| 35| 154| 379| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +---------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ COOLING DEGREE DAYS: Base 65°F +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | Year | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Total | +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+ | 2006 | | | | | | | | | 65| 223| 69| 17| 374 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------+------+------+------+------+------+------+------+------+------+------+------+------+---------+STATION LOCATION AND INSTRUMENTATION Round Rock +-------------------------+----------+----------+------------+------------+-----------------------------------------------------+ | | | | | | Elevation Above (ft) | | | | | | +------+----------------------------------------------+ | | | | | | | Ground | | | | | Latitude | Longitude | Sea +-----+-----+-----+---------+-------+----------+ | | | | | | | | | | | | | | Location | Occupied | Occupied | North | West | Level| Wind| Sun | Temp| Humidity| Rain | Barometer| | | From | To | | | | | | | | | | | | | | | | | | | | | | | +-------------------------+----------+----------+------------+------------+------+-----+-----+-----+---------+-------+----------+ | | | | | | | | | | | | | | | 9/24/2006| |30° 32' 55" |97° 37' 34" | 709| 9| 6| 6| 6 | 6 | 3 | |Round Rock, TX 78664 | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------+----------+----------+------------+------------+------+-----+-----+-----+---------+-------+----------+ Notes: Units are: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches.INSTRUMENTATION DETAIL The following equipment is used for measuring meteorological data at this station: Davis Vantage Pro, Vantage Pro Plus, Vantage Pro2, Vantage Pro2 Plus Wind: Electronic sensors: Large cups: Instantaneous speed to 120 mph and direction to nearest 7°, greater of 2 mph or ±5%. Small cups: Instantaneous speed to 175 mph and direction to nearest 7°, greater of 3 mph or ±5%. Temperature: Electronic sensor: -40° to 140°F, ±1°F. Humidity: Electronic sensor: 0 to 100% RH, ±3%. Barometer: Electronic sensor: 26.00 to 32.00 inches Hg, ±0.05". Rainfall: 6.5-inch diameter electronic tipping bucket rain gauge. Resolution 0.01", ±4%. Sunshine: Electronic sensor: 0 to 1600 W/m^2, 5%. UV: Electronic sensor: 0 to 16 Index, 8%. Snow, ice pellets, glaze and other meteorological phenomenon not recorded by the Weather Computer are manually observed and recorded in the station record.