Sedan, Montana Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Sedan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——80°45°—
- SundayJul 5Light Drizzle19%0.02″83°58°+3°
- MondayJul 6Light Drizzle59%—75°55°-8°
- TuesdayJul 7Light Drizzle59%—78°52°+3°
- WednesdayJul 8Heavy Drizzle31%0.04″84°53°+6°
- ThursdayJul 9Clear31%—77°50°-7°
- FridayJul 10Clear——83°50°+6°
AQI 45 (Good), driven by Ozone. AQI up 14 over the last 6 hours (gradual rise). 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
- 1.7 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
- 11:47 PM
- Moonset
- 11:38 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Sedan at a glance
- Today vs. normal: 14°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.
16-Day Forecast — Sedan
- Sat81°45°1%
- Sun83°57°19%
- Mon75°55°59%
- Tue78°52°59%
- Wed84°53°31%
- Thu77°50°31%
- Fri83°50°1%
- Sat92°55°2%
- Sun96°65°8%
- Mon93°65°12%
- Tue94°63°24%
- Wed96°62°24%
- Thu94°63°19%
- Fri93°56°10%
- Sat96°62°9%
- Sun89°59°22%
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 — Sedan
SPC has placed Sedan in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Sedan
- 59086