Bull Lake, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bull Lake, a community in Sanders County, Montana.
This Afternoon
77°F
Sunny
Sunny, with a high near 77. East southeast wind around 2 mph.
7-day forecast for Bull Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 2 mph ESE | 2% |
| Tonight | 47°F | Partly Cloudy | 1 mph SW | 2% |
| Sunday | 77°F | Sunny | 0 to 3 mph S | 0% |
| Sunday Night | 48°F | Mostly Clear | 0 mph | 0% |
| Monday | 78°F | Sunny | 3 mph S | 0% |
| Monday Night | 48°F | Mostly Clear | 1 mph SW | 0% |
| Tuesday | 76°F | Mostly Sunny | 3 mph S | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 1 mph SW | 3% |
| Wednesday | 70°F | Mostly Sunny | 1 to 5 mph SSW | 2% |
| Wednesday Night | 46°F | Partly Cloudy | 2 mph SSW | 0% |
| Thursday | 68°F | Mostly Sunny | 2 mph SSW | 5% |
| Thursday Night | 46°F | Mostly Cloudy | 1 mph ENE | 11% |
| Friday | 66°F | Slight Chance Light Rain | 2 mph SSE | 23% |
| Friday Night | 43°F | Slight Chance Light Rain | 1 mph SW | 17% |
Forecast source: National Weather Service (api.weather.gov) for Bull Lake (48.230, -115.853). Updated through the day.
Growing snapshot for Bull Lake
Last spring frost
May 20
First fall frost
Sep 20
Growing season
119 days
Hardiness zone
6a
More local growing data for Bull Lake: nearby ZIP 59853 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Belknap
Camas
Dixon
Heron
Hot Springs
Lonepine
Noxon
Old Agency
Paradise
Plains
Thompson Falls
Trout Creek
Climate data from the nearest NOAA station, Heron 2 Nw, Mt (10.1 mi from Bull Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.