Olney, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Olney, a community in Flathead County, Montana.
Tonight
22°F
Mostly Cloudy
Mostly cloudy, with a low around 22. Wind around 0 mph.
7-day forecast for Olney
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 22°F | Mostly Cloudy | 0 mph | 0% |
| Wednesday | 46°F | Mostly Sunny | 1 mph SSW | 0% |
| Wednesday Night | 23°F | Mostly Clear | 0 mph | 1% |
| Thursday | 42°F | Partly Sunny | 0 to 3 mph SSW | 12% |
| Thursday Night | 26°F | Mostly Cloudy | 2 mph SSW | 10% |
| Friday | 45°F | Mostly Cloudy then Slight Chance Light Rain | 1 to 5 mph SSW | 21% |
| Friday Night | 27°F | Slight Chance Light Rain | 0 to 3 mph SSW | 21% |
| Saturday | 49°F | Partly Sunny | 2 mph SSE | 9% |
| Saturday Night | 29°F | Mostly Cloudy then Chance Light Rain | 0 to 3 mph ESE | 43% |
| Sunday | 51°F | Chance Light Rain | 3 to 8 mph SSW | 43% |
| Sunday Night | 29°F | Chance Light Rain | 0 to 5 mph SSW | 28% |
| Monday | 48°F | Partly Sunny then Slight Chance Light Rain | 1 mph SSE | 19% |
| Monday Night | 29°F | Slight Chance Light Rain | 0 mph | 22% |
| Tuesday | 50°F | Slight Chance Light Rain | 2 mph SSW | 22% |
Forecast source: National Weather Service (api.weather.gov) for Olney (48.547, -114.573). Updated through the day.
Growing snapshot for Olney
Last spring frost
May 16
First fall frost
Sep 25
Growing season
129 days
Hardiness zone
5a
More local growing data for Olney: nearby ZIP 59937 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
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Columbia Falls
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Helena Flats
Hungry Horse
Kalispell
Kila
Lakeside
Little Bitterroot Lake
Marion
Martin City
Pinnacle
Polebridge
Rhodes
Snowslip
Somers
West Glacier
Whitefish
Woods Bay
Climate data from the nearest NOAA station, Whitefish, Mt (6.7 mi from Olney). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.