Gilman, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gilman, a community in Teton County, Montana.
This Afternoon
66°F
Mostly Cloudy
Mostly cloudy, with a high near 66. East wind around 6 mph.
7-day forecast for Gilman
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Mostly Cloudy | 6 mph E | 4% |
| Tonight | 45°F | Partly Cloudy | 1 to 5 mph SSW | 1% |
| Sunday | 74°F | Sunny | 1 to 6 mph S | 0% |
| Sunday Night | 46°F | Mostly Clear | 1 to 5 mph SSW | 0% |
| Monday | 78°F | Sunny | 5 mph SSW | 0% |
| Monday Night | 48°F | Mostly Clear | 6 mph SW | 0% |
| Tuesday | 78°F | Sunny | 5 mph WSW | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 5 mph WSW | 1% |
| Wednesday | 77°F | Sunny | 2 to 9 mph SW | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 3 to 7 mph WSW | 5% |
| Thursday | 77°F | Mostly Sunny | 2 to 8 mph SSW | 3% |
| Thursday Night | 51°F | Slight Chance Light Rain then Partly Cloudy | 1 to 6 mph W | 15% |
| Friday | 73°F | Mostly Sunny | 0 to 9 mph S | 10% |
| Friday Night | 48°F | Mostly Cloudy then Slight Chance Light Rain | 3 to 7 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Gilman (47.509, -112.358). Updated through the day.
Growing snapshot for Gilman
Last spring frost
May 13
First fall frost
Sep 27
Growing season
135 days
Hardiness zone
4b
More local growing data for Gilman: nearby ZIP 59436 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Augusta
Bynum
Choteau
Dutton
Miller Colony
New Miami Colony
New Rockport Colony
Pendroy
Power
Rockport Colony
Climate data from the nearest NOAA station, Fairfield, Mt (6.2 mi from Gilman). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.