St. Xavier, MT Weather & Growing Conditions
Today
51°F
Sunny
Sunny. High near 51, with temperatures falling to around 45 in the afternoon. Northwest wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 51°F | Sunny | 1 to 5 mph NW | 0% |
| Tonight | 31°F | Partly Cloudy | 5 mph WSW | 0% |
| Thursday | 55°F | Mostly Sunny | 5 mph WSW | 0% |
| Thursday Night | 34°F | Slight Chance Rain Showers | 2 to 8 mph WSW | 15% |
| Friday | 55°F | Sunny | 7 mph SW | 4% |
| Friday Night | 38°F | Partly Cloudy | 6 to 16 mph SW | 0% |
| Saturday | 61°F | Sunny | 5 to 14 mph WSW | 0% |
| Saturday Night | 37°F | Mostly Clear | 5 to 12 mph SSW | 0% |
| Sunday | 65°F | Mostly Sunny | 7 to 12 mph SW | 0% |
| Sunday Night | 40°F | Partly Cloudy | 5 to 9 mph SW | 1% |
| Monday | 58°F | Mostly Sunny | 5 mph E | 1% |
| Monday Night | 37°F | Partly Cloudy | 6 mph S | 1% |
| Tuesday | 62°F | Mostly Sunny | 6 mph SW | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 5 to 9 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Xavier, MT
Last spring frost
May 7
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
5a
Explore more for St. Xavier, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Yellowtail Dam, Mt (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.