Geyser, MT Weather & Growing Conditions
Today
64°F
Chance Light Rain
A chance of rain. Cloudy, with a high near 64. East northeast wind around 8 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Chance Light Rain | 8 mph ENE | 39% |
| Tonight | 46°F | Slight Chance Light Rain | 2 to 7 mph S | 16% |
| Sunday | 70°F | Mostly Sunny | 2 to 7 mph SE | 6% |
| Sunday Night | 46°F | Mostly Clear | 3 to 7 mph SSE | 0% |
| Monday | 77°F | Sunny | 6 mph SW | 1% |
| Monday Night | 50°F | Mostly Clear | 7 mph WSW | 0% |
| Tuesday | 78°F | Sunny | 3 to 7 mph W | 0% |
| Tuesday Night | 51°F | Mostly Clear | 6 mph SW | 0% |
| Wednesday | 80°F | Sunny | 6 mph W | 1% |
| Wednesday Night | 52°F | Mostly Clear | 5 to 8 mph SW | 3% |
| Thursday | 80°F | Sunny | 7 mph WSW | 3% |
| Thursday Night | 52°F | Mostly Clear | 9 mph S | 6% |
| Friday | 78°F | Mostly Sunny | 9 mph SW | 5% |
| Friday Night | 48°F | Slight Chance Light Rain then Partly Cloudy | 9 mph WSW | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Geyser, MT
Last spring frost
May 22
First fall frost
Sep 23
Growing season
123 days
Hardiness zone
4b
Explore more for Geyser, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Raynesford 2 Nnw, Mt (13.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.