Pompeys Pillar, MT Weather & Growing Conditions
Today
74°F
Sunny
Sunny, with a high near 74. South southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Sunny | 5 mph SSE | 0% |
| Tonight | 51°F | Partly Cloudy | 3 to 9 mph E | 1% |
| Wednesday | 84°F | Sunny | 3 to 8 mph WSW | 0% |
| Wednesday Night | 55°F | Mostly Clear | 3 to 7 mph NNE | 0% |
| Thursday | 90°F | Sunny | 3 to 9 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 3 to 9 mph NE | 0% |
| Friday | 96°F | Sunny | 6 mph W | 0% |
| Friday Night | 63°F | Mostly Clear | 7 to 10 mph N | 0% |
| Saturday | 93°F | Sunny | 8 to 13 mph WNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 6 to 12 mph NE | 1% |
| Sunday | 92°F | Mostly Sunny | 6 to 10 mph N | 0% |
| Sunday Night | 63°F | Partly Cloudy | 10 mph NE | 8% |
| Monday | 89°F | Mostly Sunny | 8 to 13 mph NNE | 3% |
| Monday Night | 63°F | Partly Cloudy | 14 mph ENE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Pompeys Pillar, MT
Last spring frost
May 13
First fall frost
Sep 29
Growing season
135 days
Hardiness zone
4b
Explore more for Pompeys Pillar, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Hardin, Mt (16.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.