Climate change in Linn County, Oregon
Since 1979, Linn County, Oregon has warmed 1.6°F, with 4 more days above 90°F, about the same number of nights above 70°F and 8% less precipitation a year. Its climate in 1996–2025 is most like Marion County, OR's was in 1951–1980.
- Average temperature: +1.6°F
- Summer highs (Jun–Aug): +5.0°F
- Winter lows (Dec–Feb): +1.4°F
- Precipitation: −8%
- Wettest day of the year: −12%
- Longest dry spell: +21 days
- Days above 90°F: +4 days
- Nights above 70°F: +0 days
- Freezing nights: −6 days
- Frost-free season: +9 days
- Muggy days: +0 days
- Summer heat index (Jun–Aug): +4.9°F
- Extreme fire-weather days: +24 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.