St. Pierre, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
St. Pierre weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——76°57°—
- SundayJul 5Overcast——74°59°-2°
- MondayJul 6Light Showers39%0.02″72°51°-2°
- TuesdayJul 7Heavy Drizzle66%—73°58°+1°
- WednesdayJul 8Showers43%0.13″83°56°+10°
- ThursdayJul 9Clear43%—69°53°-14°
- FridayJul 10Clear——78°55°+9°
AQI 43 (Good), driven by Ozone. AQI up 16 in the last 6 hours — air quality is degrading. Ozone at AQI 34 now. With UV 0.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8 around 1 PM.
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 34 now. With UV 0.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8 around 1 PM.
- Present
- AQI 34
- UV peak
- 0.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
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
- 11:45 PM
- Moonset
- 11:32 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
St. Pierre at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: June 4 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. Pierre
- Sat76°57°2%
- Sun74°59°5%
- Mon72°51°39%
- Tue73°58°66%
- Wed83°56°43%
- Thu69°53°43%
- Fri78°55°4%
- Sat90°61°4%
- Sun87°69°4%
- Mon91°67°7%
- Tue97°69°15%
- Wed92°69°18%
- Thu76°62°19%
- Fri84°57°16%
- Sat83°64°14%
- Sun81°60°16%
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 — St. Pierre
SPC includes St. Pierre 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. Pierre
- 59521