Climate change in Marshall County, South Dakota
Since 1979, Marshall County, South Dakota has warmed 1.0°F, with 5 fewer days above 90°F, about the same number of nights above 70°F and 19% more precipitation a year. Its climate in 1996–2025 is most like Lincoln County, MN's was in 1951–1980.
- Average temperature: +1.0°F
- Summer highs (Jun–Aug): −0.2°F
- Winter lows (Dec–Feb): +2.1°F
- Precipitation: +19%
- Wettest day of the year: +20%
- Longest dry spell: −4 days
- Days above 90°F: −5 days
- Nights above 70°F: −0 days
- Freezing nights: −6 days
- Frost-free season: +17 days
- Muggy days: +7 days
- Summer heat index (Jun–Aug): +0.8°F
- Extreme fire-weather days: −4 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.