Armstrong, MN Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Armstrong, MN in one place.
Partly sunny, with a high near 68. West northwest wind 10 to 15 mph. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Armstrong, MN is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 15, 2026 8:39 AM CDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Armstrong, MN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 8:39 AM CDT
- Forecast office
- MPX
- Source
- NOAA / NWS
Daily Outlook
This Week in Armstrong
Thursday looks like the warmest upcoming period in Armstrong at 72 degrees F.
Monday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Friday Night at about 15 to 20 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 8:39 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- MPX
- Radar station
- KMPX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 49. North northeast wind 0 to 5 mph.
Mostly sunny, with a high near 69. East southeast wind 5 to 10 mph.
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy. Low around 57, with temperatures rising to around 60 overnight. South southeast wind 0 to 10 mph. Chance of precipitation is 30%.
A slight chance of rain showers before 7am. Mostly cloudy, with a high near 72. North wind 0 to 5 mph. Chance of precipitation is 20%.
A chance of rain showers between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 57. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 71. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Showers and thunderstorms. Mostly cloudy. Low around 60, with temperatures rising to around 63 overnight. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 71. West northwest wind 10 to 15 mph. Chance of precipitation is 80%.
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 54. North wind 5 to 10 mph. Chance of precipitation is 20%.
A slight chance of rain showers after 1pm. Partly sunny, with a high near 66. North northeast wind around 10 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 49. Northeast wind 0 to 10 mph. Chance of precipitation is 20%.
Mostly sunny, with a high near 67. East northeast wind 0 to 5 mph.
Partly cloudy, with a low around 48. East wind around 5 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Sep 15
|
Partly Sunny
|
68°F |
10 to 15 mph
WNW
|
|
Tonight
Sep 15
|
Partly Cloudy
|
49°F |
0 to 5 mph
NNE
|
|
Wednesday
Sep 16
|
Mostly Sunny
|
69°F |
5 to 10 mph
ESE
|
|
Wednesday Night
Sep 16
|
Chance Showers And Thunderstorms
|
57°F |
0 to 10 mph
SSE
|
|
Thursday
Sep 17
|
Slight Chance Rain Showers then Mostly Cloudy
|
72°F |
0 to 5 mph
N
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms Likely
|
57°F |
5 to 10 mph
ENE
|
|
Friday
Sep 18
|
Showers And Thunderstorms
|
71°F |
10 to 15 mph
SE
|
|
Friday Night
Sep 18
|
Showers And Thunderstorms
|
60°F |
15 to 20 mph
S
|
|
Saturday
Sep 19
|
Showers And Thunderstorms
|
71°F |
10 to 15 mph
WNW
|
|
Saturday Night
Sep 19
|
Slight Chance Showers And Thunderstorms
|
54°F |
5 to 10 mph
N
|
|
Sunday
Sep 20
|
Partly Sunny then Slight Chance Rain Showers
|
66°F |
10 mph
NNE
|
|
Sunday Night
Sep 20
|
Slight Chance Rain Showers then Partly Cloudy
|
49°F |
0 to 10 mph
NE
|
|
Monday
Sep 21
|
Mostly Sunny
|
67°F |
0 to 5 mph
ENE
|
|
Monday Night
Sep 21
|
Partly Cloudy
|
48°F |
5 mph
E
|
Nearby Forecasts
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