Climate change in Phillips County, Montana
Since 1979, Phillips County, Montana has warmed 0.9°F, with 4 more days above 90°F, about the same number of nights above 70°F and 15% more precipitation a year. Its climate in 1996–2025 is most like Custer County, MT's was in 1951–1980.
- Average temperature: +0.9°F
- Summer highs (Jun–Aug): +1.7°F
- Winter lows (Dec–Feb): +2.3°F
- Precipitation: +15%
- Wettest day of the year: −12%
- Longest dry spell: −11 days
- Days above 90°F: +4 days
- Nights above 70°F: −0 days
- Freezing nights: −1 days
- Frost-free season: +17 days
- Muggy days: −0 days
- Summer heat index (Jun–Aug): +1.6°F
- Extreme fire-weather days: +8 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.