Monona, IA Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Monona, IA.

Current Conditions — Monona, IA

DECORAH (KDEH)

Clear

78.8 F
Humidity:32%
Wind Speed: 12.8 G 19.7 mph
Barometer:29.86 in
Dewpoint:46.4 F
Visibility:10.00 mi
Precip:--
Heat Index:77.9 F
Wind Chill:NA
Apr 22 2026, 02:35 PM CDT
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5-Day Forecast — Monona, IA

Wednesday

High 78 °F
Slight Chance of Showers
Wednesday
Night
Low 59 °F
Partly Cloudy
Thursday

High 77 °F
Chance of T-storms
Thursday
Night
Low 53 °F
T-storms
Friday

High 64 °F
Chance of Scattered T-storms
Friday
Night
Low 41 °F
Mostly Clear
Saturday

High 64 °F
Mostly Cloudy
Saturday
Night
Low 44 °F
Partly Cloudy
Sunday

High 66 °F
Slight Chance of Rain Showers

Detailed Forecast — Monona, IA

Wednesday
Slight Chance of Showers. High near 78°F. Wind 9 to 12 mph, with gusts as high as 20 mph.
Wednesday Night
Partly Cloudy. Low around 59°F. Wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
Chance of Thunderstorms. High near 77°F. Wind 13 to 20 mph, with gusts as high as 29 mph.
Thursday Night
Thunderstorms. Low around 53°F. Wind 9 to 14 mph, with gusts as high as 23 mph.
Friday
Chance of Scattered Thunderstorms. High near 64°F. Wind 9 to 10 mph, with gusts as high as 18 mph.
Friday Night
Mostly Clear. Low around 41°F. Wind around 6 mph, with gusts as high as 13 mph.
Saturday
Mostly Cloudy. High near 64°F. Wind 2 to 8 mph, with gusts as high as 15 mph.
Saturday Night
Partly Cloudy. Low around 44°F. Wind around 3 mph, with gusts as high as 8 mph.
Sunday
Slight Chance of Rain Showers. High near 66°F. Wind 12 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Rain Likely. Low around 51°F. Wind around 17 mph, with gusts as high as 28 mph.
Monday
Thunderstorms Likely. High near 64°F. Wind 17 to 20 mph, with gusts as high as 28 mph.
Monday Night
Chance of Rain. Low around 42°F. Wind around 17 mph, with gusts as high as 25 mph.
Tuesday
Mostly Cloudy. High near 59°F. Wind 7 to 13 mph, with gusts as high as 21 mph.
IA Radar
Current Radar • IA
Day 1 Outlook • April 22, 2026

Observation History — Monona, IA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
02:35 PM CDT 12.8 G 19.7 10.00 Clear -- 78.8 46.4 32% NA 77.9 29.86 1011.2
02:15 PM CDT 10.3 G 17.2 10.00 Clear -- 77.0 46.4 34% NA 75.9 29.87 1011.5
01:55 PM CDT 8.1 G 16.1 10.00 Clear -- 77.0 44.6 32% NA 75.9 29.89 1012.2
01:15 PM CDT 9.2 G 17.2 10.00 Clear -- 75.2 % NA NA 29.91 1012.9
12:55 PM CDT S 9.2 G 17.2 10.00 Clear -- 75.2 46.4 36% NA 74.1 29.92 1013.2
12:35 PM CDT S 11.4 10.00 Clear -- 73.4 44.6 36% NA 72.1 29.94 1013.6
12:15 PM CDT 10.3 10.00 Clear -- 73.4 44.6 36% NA 72.1 29.94 1013.6
11:35 AM CDT SE 9.2 G 15.0 10.00 Clear -- 71.6 46.4 41% NA 70.3 29.94 1013.9
11:15 AM CDT 8.1 G 13.9 10.00 Clear -- 71.6 44.6 38% NA 70.2 29.94 1013.9
10:55 AM CDT 6.9 10.00 Clear -- 69.8 46.4 43% NA NA 29.94 1013.9
10:35 AM CDT 4.7 10.00 Clear -- 68.0 46.4 46% NA NA 29.94 1013.9
10:15 AM CDT 4.7 10.00 Clear -- 66.2 46.4 49% NA NA 29.94 1013.6
09:55 AM CDT E 11.4 10.00 Clear -- 64.4 48.2 56% NA NA 29.91 1012.9
09:35 AM CDT 9.2 10.00 Clear -- 62.6 46.4 55% NA NA 29.92 1013.2
09:15 AM CDT E 8.1 10.00 Clear -- 60.8 46.4 59% NA NA 29.92 1013.2
08:55 AM CDT E 5.8 10.00 Clear -- 59.0 44.6 59% NA NA 29.94 1013.9
08:35 AM CDT E 5.8 10.00 Clear -- 57.2 42.8 59% NA NA 29.94 1013.9
08:15 AM CDT 4.7 10.00 Clear -- 55.4 42.8 62% NA NA 29.94 1013.9
07:55 AM CDT 6.9 10.00 Clear -- 55.4 41.0 58% NA NA 29.94 1013.6
07:35 AM CDT 8.1 10.00 Clear -- 53.6 41.0 62% NA NA 29.94 1013.6
07:15 AM CDT NE 5.8 10.00 Clear -- 51.8 41.0 67% NA NA 29.94 1013.6
06:55 AM CDT 0.0 10.00 Clear -- 50.0 41.0 71% NA NA 29.94 1013.9
06:35 AM CDT 0.0 10.00 Clear -- 53.6 39.2 58% NA NA 29.94 1013.6
06:15 AM CDT 4.7 10.00 Clear -- 51.8 39.2 62% NA NA 29.92 1013.2

Regional Weather Observation

DECORAH (KDEH)

Clear
78.8 F

PRAIRIE DU CHIEN (KPDC)

Clear
78.8 F

LA CROSSE (KLSE)

Clear
77.0 F

PRESTON (KFKA)

Clear
75.2 F

CHARLES CITY (KCCY)

Clear
80.6 F

OELWEN (KOLZ)

Clear
80.6 F
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