Big Arm, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Big Arm weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Clear——81°58°—
- SundayJul 5Overcast——81°61°0°
- MondayJul 6Overcast13%—74°55°-7°
- TuesdayJul 7Overcast13%—86°53°+12°
- WednesdayJul 8Light Drizzle——79°56°-7°
- ThursdayJul 9Overcast——81°49°+2°
- FridayJul 10Clear——85°50°+4°
AQI 43 (Good), driven by Ozone. AQI up 15 in the last 6 hours — air quality is degrading. Ozone at AQI 50 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 50 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 50
- UV peak
- 2.0 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 50
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
- 12:02 AM
- Moonset
- 11:52 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Big Arm at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: June 2 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59910
16-Day Forecast — Big Arm
- Sat81°58°1%
- Sun81°61°1%
- Mon74°55°13%
- Tue86°53°13%
- Wed79°56°4%
- Thu81°49°3%
- Fri85°50°1%
- Sat91°54°2%
- Sun85°57°2%
- Mon94°55°3%
- Tue96°57°8%
- Wed92°58°9%
- Thu90°54°11%
- Fri92°53°6%
- Sat91°55°3%
- Sun91°57°9%
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.
ZIP codes in Big Arm
- 59860
- 59910