Weather StoryAlmanac, microseasons, and the day's weather story.

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

Sedan, MT
Saturday, July 4 at 6:30 PM
80
°
Clear
Feels like
72°
Humidity
19%
Wind
11 mph
Sunrise
11:39 PM
Sunset
3:17 PM
Sedan, MT
Hour by hour · 24h
24-Hour ForecastSedan, MT: 24-hour forecast. Temperatures range from 58 to 83 degrees Fahrenheit.
L 58°H 83°
Sedan, MT
7-day forecast
  1. Today
    Jul 4
    Overcast
    80°45°
  2. Sunday
    Jul 5
    Light Drizzle
    19%
    0.02″
    83°58°+3°
  3. Monday
    Jul 6
    Light Drizzle
    59%
    75°55°-8°
  4. Tuesday
    Jul 7
    Light Drizzle
    59%
    78°52°+3°
  5. Wednesday
    Jul 8
    Heavy Drizzle
    31%
    0.04″
    84°53°+6°
  6. Thursday
    Jul 9
    Clear
    31%
    77°50°-7°
  7. Friday
    Jul 10
    Clear
    83°50°+6°
Sedan, MT
Anemometer · 24h winds · from true
NESW
From · True
WSW
255° · backing 67°
Direction
WSW
255°
Sustained
11
mph
Gust
20
mph
Peak 24h
21
avg 6
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 6 · pk 21 @ 5:00p
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 297SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 67° from the wsw.
Sedan, MT
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
831.1
-0.9 mb in 3h · falling · 24.54 inHg
Now
831.1
mb
3h
-0.9
mb
12h
+7.2
mb
24h
+1.7
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 824834
820825830835840-21h-18h-15h-12h-9h-6h-3h-24hNOW833.5824.4831.6
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Sedan, MT
Air quality
45
AQI
Good
+14 in 6h

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.

PM 2.5Good
0.9μg/m³
PM 10Good
1μg/m³
NO₂Good
0μg/m³
OzoneDRIVERUnhealthy SG
105μg/m³
UV IndexModerate
2.1

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
Sedan, MT
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
173.7mi
UNLIMITED
172 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
00:30 UTC · Sedan, MT · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
00:30 UTC · Sedan, MT · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Sedan, MT
Satellite · infrared · animated
Sedan, MT
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Sedan, MT
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:01 AM
Sunrise
11:39 PM
Daylight
15h 38m
Sunset
3:17 PM
Civil dusk
9:56 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Sedan, MT
The moon
Waning Gibbous
77% illuminated
Moonrise
11:47 PM
Moonset
11:38 AM
In sign
♓︎ Pisces
Sedan, MT
Microseason
Jul 1–5

Monsoon storms drench the south

insect
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

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

  1. Sat81°45°1%
  2. Sun83°57°19%
  3. Mon75°55°59%
  4. Tue78°52°59%
  5. Wed84°53°31%
  6. Thu77°50°31%
  7. Fri83°50°1%
  8. Sat92°55°2%
  9. Sun96°65°8%
  10. Mon93°65°12%
  11. Tue94°63°24%
  12. Wed96°62°24%
  13. Thu94°63°19%
  14. Fri93°56°10%
  15. Sat96°62°9%
  16. 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

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.