Hays, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hays, a community in Blaine County, Montana.
Tonight
53°F
Mostly Cloudy
Mostly cloudy, with a low around 53. Northeast wind around 13 mph, with gusts as high as 20 mph.
7-day forecast for Hays
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Cloudy | 13 mph NE | 3% |
| Saturday | 60°F | Slight Chance Light Rain | 12 mph ENE | 22% |
| Saturday Night | 52°F | Chance Light Rain | 5 to 10 mph E | 50% |
| Sunday | 62°F | Chance Light Rain | 7 mph E | 27% |
| Sunday Night | 50°F | Mostly Cloudy | 9 mph SE | 5% |
| Monday | 68°F | Mostly Sunny | 7 to 10 mph SSE | 1% |
| Monday Night | 53°F | Mostly Clear | 8 to 14 mph SSE | 0% |
| Tuesday | 74°F | Sunny | 5 mph SW | 0% |
| Tuesday Night | 56°F | Mostly Clear | 5 mph S | 0% |
| Wednesday | 74°F | Sunny | 5 to 8 mph SW | 3% |
| Wednesday Night | 56°F | Mostly Clear | 6 mph S | 2% |
| Thursday | 75°F | Sunny | 5 to 8 mph SSE | 1% |
| Thursday Night | 56°F | Mostly Clear | 8 to 12 mph SE | 4% |
| Friday | 75°F | Mostly Sunny | 8 mph S | 0% |
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 Sep 19, 2026.