



Dangerously Hot Weekend - Be Prepared!
Heat Advisories and Warnings are in effect this weekend with hot and humid conditions expected. This heat will be dangerous - children, the elderly, and pets are especially susceptible. Be sure to check on them! Read More >
Hazardous Weather Conditions
Current conditions at
Decorah (KDEH)
Lat: 43.28°NLon: 91.73°WElev: 1158ft.
A Few Clouds
86°F
30°C
Humidity | 70% |
Wind Speed | S 15 G 26 mph |
Barometer | 29.68 in |
Dewpoint | 75°F (24°C) |
Visibility | 10.00 mi |
Heat Index | 95°F (35°C) |
Last update | 21 Jun 11:15 am CDT |
Extended Forecast for
6 Miles NNE Castalia IA
Heat Advisory June 21, 12:00pm until June 22, 09:00pm
Today
High: 93 °F
Sunny and
BreezyTonight
Low: 76 °F
Mostly Clear
and BreezySunday
High: 94 °F
Sunny and
BreezySunday Night
Low: 75 °F
Breezy.
Mostly Clear
then Slight
Chance
T-stormsMonday
High: 89 °F
Slight Chance
T-storms then
T-storms
LikelyMonday Night
Low: 65 °F
T-storms
Likely then
ShowersTuesday
High: 79 °F
Showers
LikelyTuesday Night
Low: 66 °F
Showers
Wednesday
High: 81 °F
Showers
Detailed Forecast
Today
Sunny, with a high near 93. Heat index values as high as 102. Breezy, with a south wind around 23 mph, with gusts as high as 36 mph.
Tonight
Mostly clear, with a low around 76. Breezy, with a south wind 14 to 20 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 94. Heat index values as high as 103. Breezy, with a south wind 16 to 21 mph, with gusts as high as 33 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. Breezy, with a south wind 15 to 17 mph, with gusts as high as 26 mph.
Monday
A slight chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Mostly sunny, with a high near 89. Southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 65. Northwest wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Northeast wind around 6 mph becoming southeast in the afternoon. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 66. East wind around 5 mph becoming south after midnight. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 81. South wind 6 to 8 mph. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 67. Southwest wind around 7 mph becoming southeast in the evening. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Southwest wind 8 to 10 mph. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Northwest wind around 7 mph. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Northwest wind around 7 mph becoming southwest in the afternoon.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
6 Miles NNE Castalia IA
43.19°N 91.62°W
43.19°N 91.62°W
8:28 am CDT Jun 21, 2025
11am CDT Jun 21, 2025-6pm CDT Jun 27, 2025