Forsyth, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
Forsyth weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast21%—93°59°—
- SundayJul 5Overcast13%—96°68°+3°
- MondayJul 6Light Drizzle13%—92°73°-4°
- TuesdayJul 7Light Drizzle40%0.02″75°63°-17°
- WednesdayJul 8Light Drizzle35%—93°61°+18°
- ThursdayJul 9Overcast22%—92°68°-1°
- FridayJul 10Mostly Clear14%—88°66°-4°
AQI 44 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.83 fine-to-coarse ratio and 2 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
Ozone × UV × Sky
Ozone at AQI 35 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 around 1 PM.
- Present
- AQI 35
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 16
PM × Wind × Precip
PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.83 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.83
- Wind
- calm
- 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
- 11:12 PM
- Moonset
- 10:08 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Forsyth at a glance
- Today vs. normal: 64°F — typical for the season
- Last frost: May 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59327
15-Day Forecast — Forsyth
- Sat93°59°21%
- Sun96°68°13%
- Mon92°73°13%
- Tue75°63°40%
- Wed93°61°35%
- Thu92°68°22%
- Fri88°66°14%
- Sat99°65°5%
- Sun91°72°5%
- Mon86°64°11%
- Tue102°65°11%
- Wed108°77°7%
- Thu97°78°5%
- Fri104°72°14%
- Sat109°79°18%
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 — Forsyth
SPC includes Forsyth 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 Forsyth
- 59327