Annual Weather Averages in Grayson County Airport
Grayson County Airport is 35 miles from Lake Murray State Park, so the actual climate in Lake Murray State Park can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Lake Murray State Park
High Temp: 96 °F
Low Temp: 34 °F
Mean Temp: 65 °F
Precipitation: 3.23"
Humidity: 65%
Dew Point: 53 °F
Wind: 14 mph
Pressure: 30.03 "Hg
Visibility: 10 mi
January Climate & Weather Averages in Lake Murray State Park
High Temp: 56 °F
Low Temp: 34 °F
Mean Temp: 45 °F
Precipitation: 2.71"
Humidity: 66%
Dew Point: 34 °F
Wind: 14 mph
Pressure: 30.17 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Lake Murray State Park
High Temp: 61 °F
Low Temp: 38 °F
Mean Temp: 49 °F
Precipitation: 2.81"
Humidity: 66%
Dew Point: 37 °F
Wind: 15 mph
Pressure: 30.11 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Lake Murray State Park
High Temp: 68 °F
Low Temp: 45 °F
Mean Temp: 57 °F
Precipitation: 3.74"
Humidity: 65%
Dew Point: 45 °F
Wind: 16 mph
Pressure: 30.04 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Lake Murray State Park
High Temp: 76 °F
Low Temp: 53 °F
Mean Temp: 64 °F
Precipitation: 3.71"
Humidity: 66%
Dew Point: 52 °F
Wind: 17 mph
Pressure: 29.96 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Lake Murray State Park
High Temp: 83 °F
Low Temp: 62 °F
Mean Temp: 72 °F
Precipitation: 4.90"
Humidity: 70%
Dew Point: 62 °F
Wind: 15 mph
Pressure: 29.93 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Lake Murray State Park
High Temp: 91 °F
Low Temp: 70 °F
Mean Temp: 80 °F
Precipitation: 3.46"
Humidity: 66%
Dew Point: 69 °F
Wind: 13 mph
Pressure: 29.91 "Hg
Visibility: 10 mi
July Climate & Weather Averages in Lake Murray State Park
High Temp: 95 °F
Low Temp: 73 °F
Mean Temp: 84 °F
Precipitation: 1.99"
Humidity: 61%
Dew Point: 70 °F
Wind: 12 mph
Pressure: 29.96 "Hg
Visibility: 10 mi
August Climate & Weather Averages in Lake Murray State Park
High Temp: 96 °F
Low Temp: 73 °F
Mean Temp: 84 °F
Precipitation: 2.00"
Humidity: 59%
Dew Point: 68 °F
Wind: 11 mph
Pressure: 29.95 "Hg
Visibility: 10 mi
September Climate & Weather Averages in Lake Murray State Park
High Temp: 89 °F
Low Temp: 65 °F
Mean Temp: 77 °F
Precipitation: 2.90"
Humidity: 63%
Dew Point: 63 °F
Wind: 11 mph
Pressure: 29.98 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Lake Murray State Park
High Temp: 79 °F
Low Temp: 54 °F
Mean Temp: 66 °F
Precipitation: 4.25"
Humidity: 65%
Dew Point: 54 °F
Wind: 12 mph
Pressure: 30.03 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Lake Murray State Park
High Temp: 67 °F
Low Temp: 44 °F
Mean Temp: 55 °F
Precipitation: 3.19"
Humidity: 66%
Dew Point: 44 °F
Wind: 14 mph
Pressure: 30.13 "Hg
Visibility: 10 mi
December Climate & Weather Averages in Lake Murray State Park
High Temp: 58 °F
Low Temp: 36 °F
Mean Temp: 47 °F
Precipitation: 3.14"
Humidity: 68%
Dew Point: 36 °F
Wind: 14 mph
Pressure: 30.14 "Hg
Visibility: 9 mi