St. Marie, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
St. Marie weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Partly Cloudy——84°52°—
- SundayJul 5Overcast——86°62°+2°
- MondayJul 6Overcast10%—82°57°-4°
- TuesdayJul 7Showers61%0.29″67°56°-15°
- WednesdayJul 8Thunderstorm34%0.12″80°55°+13°
- ThursdayJul 9Overcast33%—75°61°-5°
- FridayJul 10Clear——74°53°-1°
AQI 32 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 43 — 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 43 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 43
- UV peak
- 6.4 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 43
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
- 11:15 PM
- Moonset
- 10:04 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
St. Marie at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: June 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. Marie
- Sat84°52°2%
- Sun86°62°7%
- Mon82°57°10%
- Tue67°56°61%
- Wed80°55°34%
- Thu75°61°33%
- Fri74°53°3%
- Sat87°58°3%
- Sun98°65°4%
- Mon102°73°8%
- Tue97°76°11%
- Wed100°68°13%
- Thu82°61°10%
- Fri82°61°10%
- Sat86°63°15%
- Sun93°68°16%
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 — St. Marie
SPC includes St. Marie 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 St. Marie
- 59230
- 59231