Geyser, MT Weather & Growing Conditions
This Afternoon
62°F
Chance Light Rain
A chance of rain. Cloudy. High near 62, with temperatures falling to around 59 in the afternoon. Southeast wind around 7 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Chance Light Rain | 7 mph SE | 30% |
| Tonight | 46°F | Slight Chance Light Rain then Mostly Cloudy | 2 to 7 mph SSW | 16% |
| Sunday | 70°F | Mostly Sunny | 2 to 7 mph SSE | 6% |
| Sunday Night | 46°F | Mostly Clear | 3 to 7 mph S | 0% |
| Monday | 77°F | Sunny | 5 mph SW | 1% |
| Monday Night | 50°F | Mostly Clear | 7 mph S | 0% |
| Tuesday | 79°F | Sunny | 6 mph W | 0% |
| Tuesday Night | 53°F | Partly Cloudy | 6 mph SW | 1% |
| Wednesday | 78°F | Mostly Sunny | 3 to 7 mph WSW | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 8 mph WSW | 4% |
| Thursday | 78°F | Sunny | 6 to 9 mph SSW | 2% |
| Thursday Night | 52°F | Mostly Clear | 9 mph SE | 5% |
| Friday | 78°F | Mostly Sunny | 8 mph SSW | 6% |
| Friday Night | 48°F | Partly Cloudy | 10 mph SW | 13% |
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 20, 2026.