Big Sky, Montana Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
Big Sky weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——79°49°—
- SundayJul 5Drizzle32%0.16″80°54°+1°
- MondayJul 6Drizzle41%—82°52°+2°
- TuesdayJul 7Drizzle37%0.02″75°50°-7°
- WednesdayJul 8Overcast21%—80°54°+5°
- ThursdayJul 9Clear21%—77°51°-3°
- FridayJul 10Partly Cloudy——79°48°+2°
AQI 40 (Good), driven by Ozone. AQI down 7 over the last 6 hours (gradual decline).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
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
- 11:30 PM
- Moonset
- 10:29 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Big Sky at a glance
- Today vs. normal: 13°F below the seasonal normal for this latitude
- Last frost: May 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59716
15-Day Forecast — Big Sky
- Sat79°50°2%
- Sun80°54°32%
- Mon82°52°41%
- Tue75°50°37%
- Wed80°54°21%
- Thu77°51°21%
- Fri79°48°9%
- Sat84°52°3%
- Sun79°53°4%
- Mon81°49°11%
- Tue89°55°18%
- Wed88°60°24%
- Thu85°57°26%
- Fri85°56°36%
- Sat85°58°39%
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 — Big Sky
SPC includes Big Sky 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 Big Sky
- 59730
- 59716