Fort Shaw, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Fort Shaw weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Mostly Clear——86°56°—
- SundayJul 5Overcast——85°62°-1°
- MondayJul 6Light Drizzle49%—74°56°-11°
- TuesdayJul 7Overcast49%—84°57°+10°
- WednesdayJul 8Overcast18%—93°60°+9°
- ThursdayJul 9Overcast18%—82°57°-11°
- FridayJul 10Clear——89°54°+7°
AQI 43 (Good), driven by Ozone. AQI up 22 in the last 6 hours — air quality is degrading. Ozone at AQI 44 — 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 44 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 44
- UV peak
- 1.8 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 44
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
- 11:52 PM
- Moonset
- 11:41 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Fort Shaw at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: May 31 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59443
16-Day Forecast — Fort Shaw
- Sat86°56°1%
- Sun85°61°3%
- Mon74°56°49%
- Tue84°57°49%
- Wed93°60°18%
- Thu82°57°18%
- Fri89°54°3%
- Sat100°61°3%
- Sun99°68°6%
- Mon100°67°12%
- Tue103°66°15%
- Wed100°66°16%
- Thu96°66°16%
- Fri98°56°13%
- Sat88°59°9%
- Sun91°60°12%
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 — Fort Shaw
SPC includes Fort Shaw 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 Fort Shaw
- 59443
- 59483