Sweet Grass, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Sweet Grass weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Mostly Clear——82°51°—
- SundayJul 5Overcast——75°54°-7°
- MondayJul 6Light Drizzle13%—74°51°-1°
- TuesdayJul 7Overcast28%—81°57°+7°
- WednesdayJul 8Overcast13%—86°58°+5°
- ThursdayJul 9Overcast——72°56°-14°
- FridayJul 10Clear——83°54°+11°
AQI 47 (Good), driven by Ozone. AQI up 18 in the last 6 hours — air quality is degrading. Ozone at AQI 44. Overcast through the UV peak window (cloud cover ~84%) — afternoon ozone should stay flat.
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 44. Overcast through the UV peak window (cloud cover ~84%) — afternoon ozone should stay flat.
- Present
- AQI 44
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
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
- 11:54 PM
- Moonset
- 11:41 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Sweet Grass at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: June 9 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59484
16-Day Forecast — Sweet Grass
- Sat82°51°0%
- Sun75°54°3%
- Mon74°51°13%
- Tue81°57°28%
- Wed86°58°13%
- Thu72°56°9%
- Fri83°54°1%
- Sat91°59°3%
- Sun86°64°3%
- Mon88°61°10%
- Tue99°64°10%
- Wed91°65°12%
- Thu75°55°12%
- Fri84°55°13%
- Sat83°56°13%
- Sun84°57°14%
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.
ZIP codes in Sweet Grass
- 59484