Monarch, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monarch, a community in Cascade County, Montana.
Today
70°F
Sunny
Sunny, with a high near 70. Northeast wind 0 to 7 mph.
7-day forecast for Monarch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Sunny | 0 to 7 mph NE | 0% |
| Tonight | 45°F | Mostly Clear | 5 mph ESE | 1% |
| Wednesday | 78°F | Sunny | 5 to 8 mph WSW | 0% |
| Wednesday Night | 50°F | Mostly Clear | 1 to 5 mph SSW | 0% |
| Thursday | 86°F | Sunny | 5 to 9 mph W | 0% |
| Thursday Night | 54°F | Mostly Clear | 1 to 7 mph SSW | 0% |
| Friday | 89°F | Sunny | 3 to 14 mph WSW | 0% |
| Friday Night | 56°F | Mostly Clear | 5 to 14 mph WSW | 0% |
| Saturday | 87°F | Sunny | 5 to 9 mph WSW | 0% |
| Saturday Night | 56°F | Mostly Clear | 3 to 8 mph SW | 0% |
| Sunday | 84°F | Sunny | 2 to 7 mph W | 0% |
| Sunday Night | 54°F | Partly Cloudy | 1 to 7 mph E | 4% |
| Monday | 82°F | Mostly Sunny | 1 to 7 mph NW | 10% |
| Monday Night | 53°F | Slight Chance Rain Showers | 2 to 6 mph ESE | 20% |
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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Sun Prairie
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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 Aug 4, 2026.