Darby, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Darby weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——87°50°—
- SundayJul 5Overcast——86°60°-1°
- MondayJul 6Showers51%0.27″83°58°-3°
- TuesdayJul 7Light Drizzle35%0.02″87°56°+4°
- WednesdayJul 8Overcast14%—85°56°-2°
- ThursdayJul 9Clear——83°49°-2°
- FridayJul 10Clear——93°54°+10°
AQI 44 (Good), driven by Ozone. AQI up 11 over the last 6 hours (gradual rise). Ozone at AQI 49 — 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 49 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 49
- UV peak
- 1.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 49
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
- 12:00 AM
- Moonset
- 11:52 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Darby at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: May 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 59829
16-Day Forecast — Darby
- Sat87°50°1%
- Sun86°60°4%
- Mon83°58°51%
- Tue87°56°35%
- Wed85°56°14%
- Thu83°49°4%
- Fri93°54°3%
- Sat100°59°3%
- Sun96°62°3%
- Mon99°63°6%
- Tue104°64°13%
- Wed99°65°11%
- Thu97°61°10%
- Fri99°62°3%
- Sat99°65°12%
- Sun102°64°13%
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 — Darby
SPC includes Darby 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 Darby
- 59829