Olney, MT Weather & Growing Conditions
This Afternoon
70°F
Sunny
Sunny, with a high near 70. East southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 3 mph ESE | 0% |
| Tonight | 47°F | Partly Cloudy | 1 mph SSE | 2% |
| Sunday | 71°F | Sunny | 2 mph SE | 0% |
| Sunday Night | 47°F | Mostly Clear | 1 mph SSE | 0% |
| Monday | 72°F | Sunny | 3 mph SE | 0% |
| Monday Night | 48°F | Mostly Clear | 2 mph SSW | 0% |
| Tuesday | 71°F | Mostly Sunny | 0 to 5 mph SSE | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 2 mph S | 1% |
| Wednesday | 67°F | Mostly Sunny | 1 to 7 mph S | 2% |
| Wednesday Night | 47°F | Partly Cloudy | 5 mph SW | 2% |
| Thursday | 63°F | Partly Sunny | 1 to 5 mph S | 3% |
| Thursday Night | 47°F | Mostly Cloudy | 2 mph ENE | 11% |
| Friday | 61°F | Slight Chance Light Rain | 5 mph SE | 17% |
| Friday Night | 44°F | Slight Chance Light Rain | 3 mph WNW | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Olney, MT
Growing season
60 days
Hardiness zone
5a
Explore more for Olney, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Olney, Mt (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.