Climate change in Jefferson County, Nebraska
Since 1979, Jefferson County, Nebraska has warmed 2.1°F, with about the same number of days above 90°F, 4 more nights above 70°F and 6% less precipitation a year. Its climate in 1996–2025 is most like Jackson County, KS's was in 1951–1980.
- Average temperature: +2.1°F
- Summer highs (Jun–Aug): +0.5°F
- Winter lows (Dec–Feb): +1.6°F
- Precipitation: −6%
- Wettest day of the year: −2%
- Longest dry spell: +0 days
- Days above 90°F: −0 days
- Nights above 70°F: +4 days
- Freezing nights: −7 days
- Frost-free season: +20 days
- Muggy days: +10 days
- Summer heat index (Jun–Aug): +0.8°F
- Extreme fire-weather days: +10 days
- Snowfall: −41%
- Snowy days (1 inch or more): −2 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.