Saint Mary, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
Saint Mary weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——72°52°—
- SundayJul 5Overcast——72°52°0°
- MondayJul 6Foggy24%—69°50°-3°
- TuesdayJul 7Overcast24%—77°55°+8°
- WednesdayJul 8Overcast13%—75°55°-2°
- ThursdayJul 9Clear——66°52°-9°
- FridayJul 10Clear——72°48°+6°
AQI 36 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 31 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 10 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 partly cloudy skies, surface ozone likely climbs to AQI 10 around 1 PM.
- Present
- AQI 31
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 10
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
- 10:33 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Saint Mary at a glance
- Today vs. normal: 10°F below the seasonal normal for this latitude
- Last frost: June 7 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — Saint Mary
- Sat72°52°2%
- Sun72°52°9%
- Mon69°50°24%
- Tue77°55°24%
- Wed75°55°13%
- Thu66°52°6%
- Fri72°48°2%
- Sat78°53°3%
- Sun66°49°4%
- Mon76°50°6%
- Tue83°59°10%
- Wed83°65°10%
- Thu81°56°10%
- Fri86°63°6%
- Sat86°61°6%
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 Saint Mary
- 59417