Hays, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hays, a community in Blaine County, Montana.
Today
51°F
Sunny
Sunny. High near 51, with temperatures falling to around 42 in the afternoon. South southeast wind 2 to 6 mph.
7-day forecast for Hays
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 51°F | Sunny | 2 to 6 mph SSE | 0% |
| Tonight | 33°F | Partly Cloudy | 1 to 5 mph SE | 0% |
| Wednesday | 47°F | Partly Sunny | 3 mph N | 0% |
| Wednesday Night | 32°F | Partly Cloudy | 1 to 6 mph SSW | 0% |
| Thursday | 52°F | Mostly Sunny | 3 to 7 mph SW | 0% |
| Thursday Night | 35°F | Partly Cloudy | 6 to 14 mph WSW | 0% |
| Friday | 50°F | Sunny | 12 to 15 mph WSW | 5% |
| Friday Night | 37°F | Partly Cloudy | 12 to 24 mph WSW | 9% |
| Saturday | 50°F | Sunny | 6 to 24 mph W | 0% |
| Saturday Night | 37°F | Mostly Clear | 6 to 9 mph SW | 0% |
| Sunday | 58°F | Mostly Sunny | 8 to 12 mph SW | 0% |
| Sunday Night | 40°F | Partly Cloudy | 12 to 17 mph W | 0% |
| Monday | 52°F | Mostly Sunny | 6 to 12 mph W | 1% |
| Monday Night | 40°F | Mostly Cloudy | 6 to 10 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Hays (48.010, -108.661). Updated through the day.
Growing snapshot for Hays
Last spring frost
May 23
First fall frost
Sep 23
Growing season
121 days
Hardiness zone
4b
More local growing data for Hays: nearby ZIP 59527 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chinook 35Se, Mt (13.4 mi from Hays). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.