Geyser, MT Weather & Growing Conditions
Today
76°F
Sunny
Sunny, with a high near 76. Northeast wind 2 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Sunny | 2 to 8 mph NE | 0% |
| Tonight | 48°F | Mostly Clear | 7 mph WSW | 1% |
| Wednesday | 83°F | Sunny | 7 to 13 mph W | 0% |
| Wednesday Night | 53°F | Mostly Clear | 3 to 9 mph W | 0% |
| Thursday | 90°F | Sunny | 7 to 16 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 5 to 13 mph SSW | 0% |
| Friday | 95°F | Sunny | 5 to 20 mph W | 0% |
| Friday Night | 59°F | Mostly Clear | 8 to 15 mph W | 0% |
| Saturday | 93°F | Sunny | 15 mph W | 0% |
| Saturday Night | 59°F | Mostly Clear | 8 to 13 mph W | 0% |
| Sunday | 89°F | Sunny | 12 mph WNW | 0% |
| Sunday Night | 56°F | Partly Cloudy | 6 to 12 mph ENE | 6% |
| Monday | 87°F | Sunny | 5 to 10 mph NNW | 10% |
| Monday Night | 55°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph ESE | 20% |
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 Aug 4, 2026.