Pinnacle, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pinnacle, a community in Flathead County, Montana.
Tonight
29°F
Mostly Cloudy
Mostly cloudy, with a low around 29. Wind around 0 mph.
7-day forecast for Pinnacle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Mostly Cloudy | 0 mph | 0% |
| Wednesday | 49°F | Mostly Sunny | 1 mph W | 0% |
| Wednesday Night | 29°F | Mostly Clear | 0 mph | 2% |
| Thursday | 42°F | Chance Light Rain | 0 to 5 mph SSW | 44% |
| Thursday Night | 34°F | Chance Rain And Snow then Mostly Cloudy | 5 mph SW | 44% |
| Friday | 45°F | Partly Sunny then Chance Light Rain | 6 mph SW | 34% |
| Friday Night | 34°F | Chance Light Rain | 5 to 12 mph SW | 34% |
| Saturday | 50°F | Partly Sunny | 0 to 5 mph SW | 10% |
| Saturday Night | 36°F | Mostly Cloudy then Chance Light Rain | 0 to 5 mph S | 52% |
| Sunday | 52°F | Light Rain Likely | 5 to 9 mph SW | 58% |
| Sunday Night | 35°F | Rain And Snow Likely | 2 to 9 mph SW | 58% |
| Monday | 49°F | Partly Sunny then Chance Light Rain | 2 mph SW | 27% |
| Monday Night | 36°F | Chance Rain And Snow | 0 to 3 mph SSW | 27% |
| Tuesday | 51°F | Chance Light Rain | 3 mph SW | 25% |
Forecast source: National Weather Service (api.weather.gov) for Pinnacle (48.358, -113.649). Updated through the day.
Growing snapshot for Pinnacle
Last spring frost
May 9
First fall frost
Oct 1
Growing season
141 days
Hardiness zone
5a
More local growing data for Pinnacle: nearby ZIP 59916 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
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Bigfork
Columbia Falls
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Helena Flats
Hungry Horse
Kalispell
Kila
Lakeside
Little Bitterroot Lake
Marion
Martin City
Olney
Polebridge
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Snowslip
Somers
West Glacier
Whitefish
Woods Bay
Climate data from the nearest NOAA station, Hungry Horse Dam, Mt (16.9 mi from Pinnacle). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.