Decorah, IA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Decorah, IA in one place.
Mostly sunny, with a high near 90. Heat index values as high as 97. Southwest wind 1 to 9 mph.
Local Weather Overview
This forecast page for Decorah, IA 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: Jul 17, 2026 9:15 AM CDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Decorah, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 9:15 AM CDT
- Forecast office
- ARX
- Source
- NOAA / NWS
Daily Outlook
This Week in Decorah
Today looks like the warmest upcoming period in Decorah at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 16 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 9:15 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ARX
- Radar station
- KARX
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 73. Heat index values as high as 96. Southwest wind around 8 mph, with gusts as high as 18 mph.
Sunny, with a high near 86. Northwest wind around 8 mph.
Partly cloudy, with a low around 64. Northeast wind 0 to 6 mph.
Mostly sunny, with a high near 86. Southeast wind around 3 mph.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South wind 3 to 9 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Mostly sunny, with a high near 80. Northwest wind 10 to 16 mph, with gusts as high as 24 mph.
Mostly clear, with a low around 59. North wind 2 to 13 mph, with gusts as high as 21 mph.
Sunny, with a high near 77. Northwest wind 2 to 6 mph.
Mostly clear, with a low around 58. West wind 0 to 3 mph.
Mostly sunny, with a high near 78. Southwest wind 0 to 5 mph.
Partly cloudy, with a low around 60. South wind around 3 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 17
|
Mostly Sunny
|
90°F |
1 to 9 mph
SW
|
|
Tonight
Jul 17
|
Partly Cloudy
|
73°F |
8 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
86°F |
8 mph
NW
|
|
Saturday Night
Jul 18
|
Partly Cloudy
|
64°F |
0 to 6 mph
NE
|
|
Sunday
Jul 19
|
Mostly Sunny
|
86°F |
3 mph
SE
|
|
Sunday Night
Jul 19
|
Partly Cloudy then Chance Showers And Thunderstorms
|
68°F |
3 to 9 mph
S
|
|
Monday
Jul 20
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
90°F |
12 mph
SW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
68°F |
10 mph
W
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
80°F |
10 to 16 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
59°F |
2 to 13 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
77°F |
2 to 6 mph
NW
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
58°F |
0 to 3 mph
W
|
|
Thursday
Jul 23
|
Mostly Sunny
|
78°F |
0 to 5 mph
SW
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
60°F |
3 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Decorah.
Nearby forecast pages are not available for this location yet.
