Harman US

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

WhenTempForecastWindPrecip
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.