Hays, MT Weather & Growing Conditions
This Afternoon
53°F
Sunny
Sunny. High near 53, with temperatures falling to around 44 in the afternoon. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Sunny | 5 mph S | 0% |
| Tonight | 34°F | Partly Cloudy | 3 mph SSW | 0% |
| Wednesday | 49°F | Partly Sunny | 2 mph NNE | 0% |
| Wednesday Night | 32°F | Partly Cloudy | 1 to 5 mph S | 0% |
| Thursday | 54°F | Mostly Sunny | 5 to 8 mph SW | 0% |
| Thursday Night | 35°F | Partly Cloudy | 5 to 10 mph WSW | 0% |
| Friday | 53°F | Sunny | 10 to 16 mph SW | 5% |
| Friday Night | 38°F | Partly Cloudy | 10 to 21 mph WSW | 9% |
| Saturday | 52°F | Sunny | 5 to 21 mph W | 0% |
| Saturday Night | 37°F | Mostly Clear | 5 to 9 mph SW | 0% |
| Sunday | 60°F | Mostly Sunny | 8 to 12 mph SW | 0% |
| Sunday Night | 41°F | Partly Cloudy | 8 to 13 mph WSW | 0% |
| Monday | 54°F | Mostly Sunny | 8 mph W | 1% |
| Monday Night | 40°F | Mostly Cloudy | 8 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hays, MT
Last spring frost
May 23
First fall frost
Sep 23
Growing season
121 days
Hardiness zone
4b
Explore more for Hays, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Chinook 35Se, Mt (13.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.