Climate change in Grayson County, Virginia
Since 1979, Grayson County, Virginia has warmed 2.7°F, with 1 fewer days above 90°F, about the same number of nights above 70°F and 18% more precipitation a year. Its climate in 1996–2025 is most like Johnson County, TN's was in 1951–1980.
- Average temperature: +2.7°F
- Summer highs (Jun–Aug): +0.1°F
- Winter lows (Dec–Feb): +5.8°F
- Precipitation: +18%
- Wettest day of the year: +20%
- Longest dry spell: −3 days
- Days above 90°F: −1 days
- Nights above 70°F: +0 days
- Freezing nights: −29 days
- Frost-free season: +33 days
- Muggy days: +9 days
- Summer heat index (Jun–Aug): +0.5°F
- Extreme fire-weather days: −4 days
- Snowfall: −49%
- Snowy days (1 inch or more): −7 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.