Monarch, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monarch, a community in Cascade County, Montana.
This Afternoon
55°F
Sunny
Sunny. High near 55, with temperatures falling to around 44 in the afternoon. East southeast wind around 3 mph.
7-day forecast for Monarch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Sunny | 3 mph ESE | 0% |
| Tonight | 28°F | Partly Cloudy | 0 to 7 mph SSE | 0% |
| Wednesday | 49°F | Mostly Sunny | 1 mph WNW | 0% |
| Wednesday Night | 29°F | Mostly Clear | 1 to 7 mph SSW | 0% |
| Thursday | 51°F | Sunny | 6 to 9 mph SW | 2% |
| Thursday Night | 30°F | Mostly Clear | 6 to 9 mph SW | 2% |
| Friday | 49°F | Sunny | 9 to 17 mph SW | 6% |
| Friday Night | 32°F | Partly Cloudy | 14 to 21 mph SW | 8% |
| Saturday | 50°F | Mostly Sunny | 7 to 14 mph SW | 1% |
| Saturday Night | 36°F | Partly Cloudy | 7 to 15 mph SSW | 0% |
| Sunday | 58°F | Mostly Sunny | 10 to 16 mph SSW | 1% |
| Sunday Night | 36°F | Partly Cloudy | 6 to 12 mph SW | 1% |
| Monday | 54°F | Partly Sunny | 6 mph SW | 2% |
| Monday Night | 37°F | Mostly Cloudy | 6 to 9 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Monarch (47.100, -110.845). Updated through the day.
Growing snapshot for Monarch
Last spring frost
Jun 6
First fall frost
Sep 12
Growing season
99 days
Hardiness zone
4b
More local growing data for Monarch: nearby ZIP 59463 weather · frost dates · planting calendar · Montana frost dates
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Neihart
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Climate data from the nearest NOAA station, Neihart 8 Nnw, Mt (4.3 mi from Monarch). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.