Klein, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Klein, a community in Musselshell County, Montana.
This Afternoon
79°F
Mostly Sunny
Mostly sunny. High near 79, with temperatures falling to around 77 in the afternoon. Northeast wind around 12 mph.
7-day forecast for Klein
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Mostly Sunny | 12 mph NE | 12% |
| Tonight | 53°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 7 to 12 mph N | 94% |
| Saturday | 60°F | Showers And Thunderstorms | 14 mph NNE | 95% |
| Saturday Night | 51°F | Showers And Thunderstorms | 12 mph NNE | 88% |
| Sunday | 63°F | Rain Showers | 8 mph NNE | 78% |
| Sunday Night | 48°F | Mostly Cloudy | 1 to 7 mph E | 9% |
| Monday | 74°F | Mostly Sunny | 2 to 7 mph SSW | 0% |
| Monday Night | 49°F | Mostly Clear | 1 to 7 mph S | 0% |
| Tuesday | 80°F | Mostly Sunny | 5 mph SW | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 3 mph S | 3% |
| Wednesday | 80°F | Sunny | 6 mph WSW | 3% |
| Wednesday Night | 51°F | Mostly Clear | 3 mph SSW | 3% |
| Thursday | 80°F | Sunny | 7 mph SSW | 1% |
| Thursday Night | 51°F | Mostly Clear | 2 to 6 mph SSE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Klein (46.398, -108.553). Updated through the day.
Growing snapshot for Klein
Last spring frost
May 20
First fall frost
Sep 21
Growing season
124 days
Hardiness zone
4b
More local growing data for Klein: nearby ZIP 59072 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Roundup, Mt (6.2 mi from Klein). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.