St. Pierre, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Pierre, a community in Hill County, Montana.
Tonight
30°F
Partly Cloudy
Partly cloudy, with a low around 30. West wind around 1 mph.
7-day forecast for St. Pierre
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Partly Cloudy | 1 mph W | 0% |
| Wednesday | 44°F | Partly Sunny then Patchy Fog | 0 to 3 mph W | 0% |
| Wednesday Night | 29°F | Patchy Fog then Mostly Clear | 3 mph S | 0% |
| Thursday | 49°F | Sunny | 3 to 7 mph SW | 2% |
| Thursday Night | 30°F | Mostly Clear | 3 to 9 mph SW | 3% |
| Friday | 50°F | Sunny | 9 to 13 mph SW | 8% |
| Friday Night | 34°F | Slight Chance Light Rain then Slight Chance Rain And Snow | 9 to 13 mph SW | 15% |
| Saturday | 49°F | Sunny | 3 to 13 mph WSW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 3 to 8 mph SSW | 0% |
| Sunday | 58°F | Mostly Sunny | 10 mph SSW | 3% |
| Sunday Night | 36°F | Mostly Cloudy | 6 to 9 mph WSW | 2% |
| Monday | 52°F | Mostly Sunny | 6 mph SW | 2% |
| Monday Night | 36°F | Mostly Cloudy | 3 to 7 mph S | 2% |
| Tuesday | 56°F | Mostly Sunny | 6 to 9 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for St. Pierre (48.244, -109.816). Updated through the day.
Growing snapshot for St. Pierre
Last spring frost
May 17
First fall frost
Sep 25
Growing season
128 days
Hardiness zone
4a
More local growing data for St. Pierre: nearby ZIP 59521 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Big Sandy, Mt (12.8 mi from St. Pierre). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.