Colstrip, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
Colstrip weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast32%—89°60°—
- SundayJul 5Overcast21%—93°65°+4°
- MondayJul 6Drizzle21%0.03″91°72°-2°
- TuesdayJul 7Light Showers33%0.04″77°62°-14°
- WednesdayJul 8Overcast33%—91°62°+14°
- ThursdayJul 9Overcast24%—90°65°-1°
- FridayJul 10Clear11%—87°64°-3°
AQI 44 (Good), driven by PM2.5. AQI down 22 over the last 6 hours — air quality is improving sharply. PM2.5 at 13.0 µg/m³, PM10 at 14.4 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 13.0 µg/m³, PM10 at 14.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.90
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:11 PM
- Moonset
- 10:08 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Colstrip at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59323
15-Day Forecast — Colstrip
- Sat89°60°32%
- Sun93°65°21%
- Mon91°72°21%
- Tue77°62°33%
- Wed91°62°33%
- Thu90°65°24%
- Fri87°64°11%
- Sat98°62°7%
- Sun95°70°7%
- Mon85°62°10%
- Tue101°61°15%
- Wed107°74°18%
- Thu95°74°15%
- Fri102°68°16%
- Sat108°72°10%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Colstrip
SPC includes Colstrip in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Colstrip
- 59323