St. Ignatius, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
St. Ignatius weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——83°59°—
- SundayJul 5Overcast——83°62°0°
- MondayJul 6Overcast33%—76°55°-7°
- TuesdayJul 7Overcast33%—87°59°+11°
- WednesdayJul 8Overcast10%—87°61°0°
- ThursdayJul 9Overcast——78°57°-9°
- FridayJul 10Clear——80°52°+2°
AQI 38 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 31 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 14 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 31 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 14 around 1 PM.
- Present
- AQI 31
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 14
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
- 11:44 PM
- Moonset
- 10:38 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
St. Ignatius at a glance
- Today vs. normal: 62°F — typical for the season
- Last frost: May 30 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — St. Ignatius
- Sat83°60°2%
- Sun83°62°1%
- Mon76°55°33%
- Tue87°59°33%
- Wed87°61°10%
- Thu78°57°7%
- Fri80°52°2%
- Sat90°58°2%
- Sun79°54°3%
- Mon85°55°6%
- Tue92°61°6%
- Wed95°69°15%
- Thu94°66°16%
- Fri95°66°6%
- Sat93°65°9%
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.
ZIP codes in St. Ignatius
- 59865