St. Xavier, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
St. Xavier weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Partly Cloudy——92°59°—
- SundayJul 5Light Drizzle18%—96°64°+4°
- MondayJul 6Light Drizzle30%—94°68°-2°
- TuesdayJul 7Light Drizzle31%0.01″83°63°-11°
- WednesdayJul 8Drizzle31%0.04″98°60°+15°
- ThursdayJul 9Partly Cloudy21%—98°65°0°
- FridayJul 10Clear——93°63°-5°
AQI 41 (Good), driven by Ozone. AQI down 14 over the last 6 hours (gradual decline). Ozone at AQI 30 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 9 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 30 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 9 around 1 PM.
- Present
- AQI 30
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 5.3 µg/m³ (AQI 29) with a 0.82 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.82
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 10:13 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
St. Xavier at a glance
- Today vs. normal: 3°F below the seasonal normal for this latitude
- Last frost: May 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — St. Xavier
- Sat92°59°5%
- Sun96°64°18%
- Mon94°68°30%
- Tue83°63°31%
- Wed98°60°31%
- Thu98°65°21%
- Fri93°63°9%
- Sat102°62°3%
- Sun99°70°4%
- Mon91°62°8%
- Tue105°64°16%
- Wed110°76°18%
- Thu99°73°19%
- Fri105°69°19%
- Sat111°75°22%
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. Xavier
SPC includes St. Xavier 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. Xavier
- 59075