Climate change in Johnson County, Nebraska
Since 1979, Johnson County, Nebraska has warmed 1.6°F, with 11 fewer days above 90°F, about the same number of nights above 70°F and 9% less precipitation a year. Its climate in 1996–2025 is most like Brown County, KS's was in 1951–1980.
- Average temperature: +1.6°F
- Summer highs (Jun–Aug): −0.9°F
- Winter lows (Dec–Feb): +2.1°F
- Precipitation: −9%
- Wettest day of the year: −15%
- Longest dry spell: +2 days
- Days above 90°F: −11 days
- Nights above 70°F: +0 days
- Freezing nights: −5 days
- Frost-free season: +19 days
- Muggy days: +12 days
- Summer heat index (Jun–Aug): −1.0°F
- Extreme fire-weather days: +12 days
- Snowfall: −25%
- Snowy days (1 inch or more): +0 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.