Jefferson, IA Weather Forecast & Alerts

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

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Current Conditions — Jefferson, IA

CARROLL (KCIN)

Partly Cloudy

59.0 F
Humidity:94%
Wind Speed: 10.3 mph
Barometer:29.68 in
Dewpoint:57.2 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 27 2026, 12:35 AM CDT
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5-Day Forecast — Jefferson, IA

Monday

High 69 °F
T-storms
Monday
Night
Low 39 °F
Mostly Cloudy
Tuesday

High 59 °F
Mostly Cloudy
Tuesday
Night
Low 39 °F
Mostly Cloudy
Wednesday

High 62 °F
Partly Sunny
Wednesday
Night
Low 39 °F
Partly Cloudy
Thursday

High 64 °F
Isolated T-storm
Thursday
Night
Low 39 °F
Partly Cloudy
Friday

High 64 °F
Partly Sunny

Detailed Forecast — Jefferson, IA

Monday
Thunderstorms. High near 69°F. Wind 12 to 20 mph, with gusts as high as 31 mph.
Monday Night
Mostly Cloudy. Low around 39°F. Wind 13 to 20 mph, with gusts as high as 30 mph.
Tuesday
Mostly Cloudy. High near 59°F. Wind 7 to 12 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly Cloudy. Low around 39°F. Wind 5 to 6 mph, with gusts as high as 9 mph.
Wednesday
Partly Sunny. High near 62°F. Wind 5 to 9 mph, with gusts as high as 14 mph.
Wednesday Night
Partly Cloudy. Low around 39°F. Wind around 2 mph, with gusts as high as 3 mph.
Thursday
Isolated T-storm. High near 64°F. Wind 8 to 9 mph, with gusts as high as 13 mph.
Thursday Night
Partly Cloudy. Low around 39°F. Wind around 2 mph, with gusts as high as 3 mph.
Friday
Partly Sunny. High near 64°F. Wind 5 to 7 mph, with gusts as high as 10 mph.
Friday Night
Mostly Clear. Low around 39°F. Wind around 2 mph, with gusts as high as 3 mph.
Saturday
Mostly Sunny. High near 71°F. Wind around 6 mph, with gusts as high as 9 mph.
Saturday Night
Mostly Clear. Low around 44°F. Wind around 3 mph, with gusts as high as 6 mph.
Sunday
Partly Sunny. High near 73°F. Wind 6 to 8 mph, with gusts as high as 10 mph.
IA Radar
Current Radar • IA
Day 1 Outlook • April 27, 2026

Observation History — Jefferson, 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)
12:35 AM CDT 10.3 10.00 Partly Cloudy -- 59.0 57.2 94% NA NA 29.68 1005.1
12:15 AM CDT 9.2 G 16.1 10.00 Clear -- 60.8 57.2 88% NA NA 29.68 1004.8
11:55 PM CDT 11.4 10.00 Mostly Clear -- 60.8 57.2 88% NA NA 29.68 1005.1
11:35 PM CDT 13.9 10.00 Clear -- 62.6 57.2 83% NA NA 29.68 1005.1
11:15 PM CDT SE 15.0 10.00 Partly Cloudy -- 62.6 57.2 83% NA NA 29.68 1005.1
10:55 PM CDT 18.3 G 25.3 10.00 Cloudy -- 62.6 57.2 83% NA NA 29.68 1005.1
10:35 PM CDT 20.8 G 28.9 10.00 Cloudy and Windy -- 64.4 57.2 77% NA NA 29.69 1005.4
10:15 PM CDT 10.00 Cloudy -- 64.4 57.2 77% NA NA 29.70 1005.8
09:55 PM CDT 15.0 G 20.8 10.00 Cloudy -- 64.4 57.2 77% NA NA 29.70 1005.8
09:35 PM CDT 17.2 10.00 Cloudy -- 64.4 57.2 77% NA NA 29.71 1006.1
09:15 PM CDT SE 13.9 G 19.7 10.00 Cloudy -- 64.4 57.2 77% NA NA 29.70 1005.8
08:55 PM CDT 15.0 10.00 Cloudy -- 66.2 57.2 73% NA NA 29.70 1005.8
08:35 PM CDT SE 15.0 10.00 NULL -- 66.2 57.2 73% NA NA 29.70 1005.8
08:15 PM CDT SE 16.1 G 23.0 10.00 Cloudy -- 68.0 57.2 68% NA NA 29.70 1005.8
07:55 PM CDT 10.00 Cloudy -- 68.0 57.2 68% NA NA 29.70 1005.8
07:35 PM CDT SE 17.2 G 24.2 10.00 Cloudy -- 68.0 57.2 68% NA NA 29.70 1005.8
07:15 PM CDT SE 18.3 G 25.3 10.00 Cloudy -- 68.0 57.2 68% NA NA 29.70 1005.8
06:55 PM CDT 19.7 G 27.7 10.00 Cloudy and Windy -- 68.0 57.2 68% NA NA 29.70 1005.8
06:35 PM CDT 10.00 Cloudy -- 68.0 57.2 68% NA NA 29.70 1005.8
06:15 PM CDT 10.00 Mostly Cloudy -- 68.0 57.2 68% NA NA 29.71 1006.1
05:55 PM CDT 17.2 10.00 Partly Cloudy -- 68.0 57.2 68% NA NA 29.72 1006.4
05:35 PM CDT 16.1 NULL Clear -- 66.2 59.0 78% NA NA 29.73 1006.8
05:15 PM CDT 19.7 8.00 Partly Cloudy and Windy -- 64.4 59.0 83% NA NA 29.73 1006.8
04:55 PM CDT 17.2 G 26.4 10.00 Mostly Clear -- 68.0 55.4 64% NA NA 29.75 1007.5

Regional Weather Observation

CARROLL (KCIN)

Partly Cloudy
59.0 F

FORT DODGE (KFOD)

Cloudy
62.6 F

PERRY MUNI (KPRO)

Cloudy
62.4 F

AUDUBON (KADU)

Cloudy
59.0 F

STORM LAKE (KSLB)

Cloudy
59.0 F

BOONE MUNI (KBNW)

Clear
59.0 F
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