Fallon, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Fallon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Light Drizzle34%0.01″77°50°—
- FridayJun 5Overcast——86°54°+9°
- SaturdayJun 6Overcast57%—98°65°+12°
- SundayJun 7Overcast57%—79°60°-19°
- MondayJun 8Light Drizzle40%—81°53°+2°
- TuesdayJun 9Overcast16%—89°65°+8°
- WednesdayJun 10Light Drizzle27%—88°67°-1°
Ozone at AQI 39. AQI up 5 over the last 6 hours (gradual rise). Overcast through the UV peak window (cloud cover ~99%) — 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 39. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
- Present
- AQI 39
- UV peak
- 7.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 18
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:56 AM
- Moonset
- 2:41 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Fallon at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: May 27 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
SPC Convective Outlook
Storm Prediction Center — Fallon
SPC has placed Fallon in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3SLGTSlight Risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.