Big Arm, Montana Weather
Paintbrush crowns the ridges. Day 88 of spring. Read this microseason across nine climate regions →
Big Arm weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——81°53°—
- TuesdayJun 16Overcast——80°61°-1°
- WednesdayJun 17Overcast——74°45°-6°
- ThursdayJun 18Clear——77°45°+3°
- FridayJun 19Overcast——72°49°-5°
- SaturdayJun 20Light Drizzle13%0.02″79°51°+7°
- SundayJun 21Light Drizzle15%—74°50°-5°
AQI 35 (Good), driven by Ozone. AQI down 9 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:35 AM
- Moonset
- 10:08 PM
- In sign
- ♊︎ Gemini
Paintbrush crowns the ridges
Big Arm at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: June 2 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Big Arm
- Mon81°54°5%
- Tue80°61°4%
- Wed74°45°5%
- Thu77°45°2%
- Fri72°49°1%
- Sat79°51°13%
- Sun74°50°15%
- Mon78°45°11%
- Tue80°49°7%
- Wed74°52°10%
- Thu65°47°15%
- Fri65°42°19%
- Sat71°43°16%
- Sun80°48°10%
- Mon84°54°11%
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 Arm
- 59860
- 59910