Fallon, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
Fallon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast25%—91°57°—
- SundayJul 5Overcast16%—99°66°+8°
- MondayJul 6Overcast19%—91°75°-8°
- TuesdayJul 7Heavy Showers54%0.97″73°62°-18°
- WednesdayJul 8Overcast44%—87°59°+14°
- ThursdayJul 9Overcast19%—92°70°+5°
- FridayJul 10Clear19%—85°69°-7°
AQI 34 (Good), driven by PM2.5. AQI down 12 over the last 6 hours (gradual decline). PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.81 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.81 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.81
- Wind
- light
- 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
- 11:06 PM
- Moonset
- 10:01 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Fallon at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 27 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59326
15-Day Forecast — Fallon
- Sat91°57°25%
- Sun99°66°16%
- Mon91°75°19%
- Tue73°62°54%
- Wed87°59°44%
- Thu92°70°19%
- Fri85°69°19%
- Sat93°65°7%
- Sun89°73°6%
- Mon83°64°11%
- Tue100°65°13%
- Wed104°74°10%
- Thu97°80°14%
- Fri99°74°6%
- Sat108°79°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.
SPC Convective Outlook
Storm Prediction Center — Fallon
SPC includes Fallon 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 Fallon
- 59326
- 59349