West Yellowstone, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
West Yellowstone weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——79°34°—
- SundayJul 5Overcast——84°49°+5°
- MondayJul 6Light Drizzle30%0.02″79°54°-5°
- TuesdayJul 7Rain30%0.18″79°49°0°
- WednesdayJul 8Heavy Drizzle14%0.01″82°47°+3°
- ThursdayJul 9Clear11%—78°46°-4°
- FridayJul 10Clear——83°46°+5°
AQI 55 (Moderate), driven by Ozone. AQI up 15 in the last 6 hours — air quality is degrading. Ozone at AQI 46 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11 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 46 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11 around 1 PM.
- Present
- AQI 46
- UV peak
- 0.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 11
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
- 11:47 PM
- Moonset
- 11:39 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
West Yellowstone at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: May 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59758
16-Day Forecast — West Yellowstone
- Sat79°34°0%
- Sun84°49°5%
- Mon79°54°30%
- Tue79°49°30%
- Wed82°47°14%
- Thu78°46°11%
- Fri83°46°1%
- Sat90°49°1%
- Sun96°52°3%
- Mon91°54°7%
- Tue97°55°19%
- Wed96°58°19%
- Thu94°55°28%
- Fri92°56°29%
- Sat96°56°23%
- Sun93°57°23%
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.
SPC Convective Outlook
Storm Prediction Center — West Yellowstone
SPC includes West Yellowstone 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 West Yellowstone
- 59758