Big Timber, Montana Weather
Paintbrush crowns the ridges. Day 88 of spring. Read this microseason across nine climate regions →
Big Timber weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——80°42°—
- TuesdayJun 16Overcast——87°62°+7°
- WednesdayJun 17Drizzle13%—75°52°-12°
- ThursdayJun 18Overcast13%—78°43°+3°
- FridayJun 19Overcast——81°49°+3°
- SaturdayJun 20Heavy Drizzle45%0.14″78°57°-3°
- SundayJun 21Light Showers43%0.34″69°54°-9°
AQI 25 (Good), driven by Ozone. AQI down 7 over the last 6 hours (gradual decline). Ozone at AQI 46. Overcast through the UV peak window (cloud cover ~92%) — 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 46. Overcast through the UV peak window (cloud cover ~92%) — afternoon ozone should stay flat.
- Present
- AQI 46
- UV peak
- 8.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 25
PM × Wind × Precip
PM2.5 at 7.7 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.74
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 5:28 AM
- Moonset
- 9:38 PM
- In sign
- ♋︎ Cancer
Paintbrush crowns the ridges
Big Timber at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: May 21 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Big Timber
- Mon80°42°2%
- Tue87°62°3%
- Wed75°52°13%
- Thu78°43°13%
- Fri81°49°3%
- Sat78°57°45%
- Sun69°54°43%
- Mon64°52°36%
- Tue77°48°17%
- Wed83°52°18%
- Thu89°57°26%
- Fri79°55°26%
- Sat73°52°28%
- Sun71°48°29%
- Mon86°49°32%
- Tue99°56°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Warm-season window is open
As of June 15, 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.
ZIP codes in Big Timber
- 59011