Colstrip, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Colstrip weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast32%—89°57°—
- SundayJul 5Overcast——94°65°+5°
- MondayJul 6Heavy Drizzle48%—86°63°-8°
- TuesdayJul 7Thunderstorm71%—86°64°0°
- WednesdayJul 8Light Drizzle43%—92°58°+6°
- ThursdayJul 9Overcast28%—84°64°-8°
- FridayJul 10Clear——85°59°+1°
AQI 49 (Good), driven by Ozone. AQI up 11 over the last 6 hours (gradual rise). Ozone at AQI 51 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 51 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 51
- UV peak
- 1.3 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 51
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
- 11:30 PM
- Moonset
- 11:19 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Colstrip at a glance
- Today vs. normal: 23°F above 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
16-Day Forecast — Colstrip
- Sat89°57°32%
- Sun94°65°7%
- Mon86°63°48%
- Tue86°64°71%
- Wed92°58°43%
- Thu84°64°28%
- Fri85°59°6%
- Sat103°61°3%
- Sun107°76°3%
- Mon100°72°8%
- Tue105°76°17%
- Wed104°77°17%
- Thu104°76°13%
- Fri102°65°13%
- Sat98°72°16%
- Sun94°69°18%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 has placed Colstrip in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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