Decorah, IA Weather

Winneshiek County10:56 AM CDT43.30°N, 91.79°WElevation 879 ft

Current conditions

Clear
50°
Clear
Feels like 49°
High 69°·Low 44°
WindSE 3 mph
Humidity82%
Dew point45°
Pressure30.36 inHg
Visibility10.0 mi
Cloud cover35%
UV index2 Low
Sunrise7:28 AM
Sunset6:18 PM

Observed at Decorah · 1 hr ago

Forecast

10-day

  • Today

    Patchy fog before 11am. Sunny. High near 69, with temperatures falling to around 67 in the afternoon. Southeast wind 5 to 10 mph.

  • Tonight

    Mostly clear, with a low around 44. South wind around 7 mph.

  • Wednesday

    Mostly sunny. High near 71, with temperatures falling to around 69 in the afternoon. South wind 1 to 6 mph.

National Weather Service forecast updated 2 hrs ago.

Hourly

Hourly forecast
  1. Now Patchy Fog 52°
  2. 11 AM Sunny 57°
  3. 12 PM Sunny 62°
  4. 1 PM Sunny 66°
  5. 2 PM Sunny 68°
  6. 3 PM Sunny 69°
  7. 4 PM Sunny 69°
  8. 5 PM Sunny 67°
  9. 6 PM Clear 64°
  10. 7 PM Clear 60°
  11. 8 PM Clear 53°
  12. 9 PM Clear 51°
  13. 10 PM Clear 49°
  14. 11 PM Clear 48°
  15. Wed12 AM Mostly Clear 47°
  16. 1 AM Mostly Clear 47°
  17. 2 AM Mostly Clear 46°
  18. 3 AM Mostly Clear 46°
  19. 4 AM Mostly Clear 45°
  20. 5 AM Mostly Clear 45°
  21. 6 AM Sunny 44°
  22. 7 AM Mostly Sunny 44°
  23. 8 AM Mostly Sunny 46°
  24. 9 AM Sunny 50°

Daily forecast

Details
  1. TodayOct 20 Patchy Fog then Sunny Patchy Fog then Sunny44°69°
  2. WedOct 21 Mostly Sunny Mostly Sunny47°71°
  3. ThuOct 22 Sunny Sunny49°72°
  4. FriOct 23 Mostly Sunny Mostly Sunny54°69°
  5. SatOct 24 Partly Sunny Partly Sunny52°70°
  6. SunOct 25 Partly Sunny Partly Sunny16%46°67°
  7. MonOct 26 Slight Chance Rain Showers Slight Chance Rain Showers18%41°61°
  8. TueOct 27 Cloudy Cloudy37°47°
  9. WedOct 28 Mostly sunny Mostly sunny34°51°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Decorah

More weather news

Sun & moon

Sunrise 7:28 AM
Sunset 6:18 PM
Daylight 10 h 49 min (−2 min 49 s tomorrow)
Waxing Gibbous · 69% lit
Moonrise 3:42 PM Moonset 1:16 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low61° / 39°
Record high84° (2024)
Record low13° (1952)
Wettest1.57 in (1982)
Yesterday69° / 36°
Month to date2.25 in (normal 1.76 in)

Decorah, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in ARX, issued 4 hrs ago

Key Messages

- Unseasonably warm into the weekend.

- Dry through Thursday night and then maybe some small rain chances from Friday into the weekend.

- Much uncertainty on temperatures and rain chances early next week.

Discussion

Issued at 1146 PM CDT Mon Oct 19 2026

Today through Thursday night

An anomalous 500 mb ridge will remain in control of the area's weather through Thursday night. This high will provide dry weather and unseasonably warm temperatures. High temperatures will warm from the mid- and upper 60s today and be in the lower and mid-70s on Thursday. Low temperatures will be in the 30s and 40s tonight and Wednesday night and in the 40s and 50s on Thursday night.

Friday and Friday night

A negatively tilted trough will move through Minnesota and western and northern Wisconsin. There is still plenty of uncertainty on whether there will be enough low-level moisture for any rain to move into our area.

With some more cover, high temperatures will be a bit cooler (mainly in the 60s). Low temperatures will be a bit warmer (upper 40s to mid-50s).

Aviation

Issued at 600 AM CDT Tue Oct 20 2026

Valley fog has developed overnight and is currently impacting ONA/PDC/OVS with issues seen on all side of LSE but seemingly not within 5 nautical miles. In any case, still prudent to carry a TEMPO at LSE given how close the issues are to impacting the terminal. Once the fog dissipates around 14-15z, VFR conditions will return. Fog may develop once again Wednesday morning primarily impacting the Wisconsin River valley and OVS while low level winds may be too strong for this to impact LSE once again so have kept it out of the TAF near the end of the period.

Arx Watches

WI...None. MN...None. IA...None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.