
Dangerous Heat Possible Next Week
A turn to hot and humid conditions is expected starting Monday. Dangerously hot conditions are possible through next week, particularly on Monday. Read More >
Hazardous Weather Conditions
Current conditions at
Decorah (KDEH)
Lat: 43.28°NLon: 91.73°WElev: 1158ft.
Overcast
75°F
24°C
| Humidity | 69% |
| Wind Speed | SE 8 G 15 mph |
| Barometer | 29.95 in |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 27 Jun 2:35 pm CDT |
Extended Forecast for
3 Miles ENE Castalia IA
Extreme Heat Watch June 29, 12:00pm until June 30, 09:00pm
This Afternoon

High: 78 °F
Mostly Sunny
Tonight

Low: 63 °F
Mostly Cloudy
Sunday
High: 84 °F
Partly Sunny
then Mostly
Cloudy and
BreezySunday Night
Low: 74 °F
Slight Chance
T-storms then
Mostly CloudyMonday
High: 91 °F
Mostly Sunny
then Sunny
and BreezyMonday Night
Low: 75 °F
Partly Cloudy
and Breezy
then Partly
CloudyTuesday

High: 91 °F
Slight Chance
T-storms and
BreezyTuesday Night

Low: 73 °F
Chance
T-stormsWednesday

High: 90 °F
Slight Chance
T-storms
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 78. Southeast wind around 10 mph.
Tonight
Mostly cloudy, with a low around 63. Southeast wind around 9 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 84. Breezy, with a southeast wind 13 to 18 mph, with gusts as high as 29 mph.
Sunday Night
A slight chance of showers and thunderstorms between 10pm and 11pm. Mostly cloudy, with a low around 74. South wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 91. Breezy, with a south wind 11 to 18 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 75. Breezy, with a south wind 11 to 17 mph, with gusts as high as 26 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91. Breezy, with a south wind 10 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind 10 to 15 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. South wind 9 to 14 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. South wind 8 to 11 mph, with gusts as high as 21 mph.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. South wind around 9 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South wind 5 to 7 mph.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Southwest wind 5 to 7 mph.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles ENE Castalia IA
43.12°N 91.62°W
43.12°N 91.62°W
12:23 pm CDT Jun 27, 2026
2pm CDT Jun 27, 2026-6pm CDT Jul 3, 2026



