Whitewater, MT Weather & Growing Conditions
This Afternoon
47°F
Sunny
Sunny. High near 47, with temperatures falling to around 42 in the afternoon. South wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Sunny | 7 mph S | 0% |
| Tonight | 29°F | Partly Cloudy | 0 to 6 mph E | 0% |
| Wednesday | 47°F | Mostly Sunny | 0 to 3 mph NNW | 0% |
| Wednesday Night | 28°F | Mostly Cloudy | 1 to 6 mph ESE | 0% |
| Thursday | 48°F | Mostly Sunny | 8 mph S | 0% |
| Thursday Night | 32°F | Partly Cloudy | 6 to 9 mph WSW | 0% |
| Friday | 51°F | Sunny | 6 to 13 mph WSW | 4% |
| Friday Night | 35°F | Partly Cloudy | 9 to 17 mph WSW | 6% |
| Saturday | 54°F | Sunny | 6 to 15 mph WSW | 1% |
| Saturday Night | 33°F | Partly Cloudy | 7 mph S | 0% |
| Sunday | 59°F | Mostly Sunny | 6 to 13 mph SSW | 1% |
| Sunday Night | 37°F | Partly Cloudy | 13 to 23 mph W | 1% |
| Monday | 51°F | Mostly Sunny | 6 to 13 mph W | 1% |
| Monday Night | 33°F | Partly Cloudy | 6 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Whitewater, MT
Last spring frost
May 19
First fall frost
Sep 22
Growing season
124 days
Hardiness zone
3b
Explore more for Whitewater, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Port Of Morgan, Mt (18.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.