Campbellsport, WI Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Campbellsport, WI.

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Current Conditions — Campbellsport, WI

OSHKOSH (KOSH)

Clear

66.2 F
Humidity:40%
Wind Speed:E 9.2 mph
Barometer:29.93 in
Dewpoint:41.0 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 05:30 PM CDT
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5-Day Forecast — Campbellsport, WI

Wednesday

High 68 °F
Forecast Missing
Wednesday
Night
Low 48 °F
Partly Cloudy
Thursday

High 77 °F
Partly Sunny
Thursday
Night
Low 59 °F
T-storms Likely
Friday

High 69 °F
T-storms Likely
Friday
Night
Low 46 °F
Partly Cloudy
Saturday

High 64 °F
Mostly Sunny
Saturday
Night
Low 42 °F
Partly Cloudy
Sunday

High 62 °F
Partly Sunny

Detailed Forecast — Campbellsport, WI

Wednesday
Sunny. High near 68°F. Wind around 6 mph, with gusts as high as 10 mph.
Wednesday Night
Partly Cloudy. Low around 48°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Thursday
Partly Sunny. High near 77°F. Wind 7 to 14 mph, with gusts as high as 23 mph.
Thursday Night
Thunderstorms Likely. Low around 59°F. Wind 9 to 10 mph, with gusts as high as 20 mph.
Friday
Thunderstorms Likely. High near 69°F. Wind 8 to 10 mph, with gusts as high as 17 mph.
Friday Night
Partly Cloudy. Low around 46°F. Wind around 8 mph, with gusts as high as 17 mph.
Saturday
Mostly Sunny. High near 64°F. Wind 7 to 12 mph, with gusts as high as 18 mph.
Saturday Night
Partly Cloudy. Low around 42°F. Wind around 5 mph, with gusts as high as 10 mph.
Sunday
Partly Sunny. High near 62°F. Wind 8 to 10 mph, with gusts as high as 16 mph.
Sunday Night
Chance of Rain. Low around 46°F. Wind around 10 mph, with gusts as high as 17 mph.
Monday
Rain Showers Likely. High near 62°F. Wind 14 to 16 mph, with gusts as high as 25 mph.
Monday Night
Rain Likely. Low around 46°F. Wind around 13 mph, with gusts as high as 22 mph.
Tuesday
Chance of Rain Showers. High near 60°F. Wind 12 to 16 mph, with gusts as high as 25 mph.
WI Radar
Current Radar • WI
Day 1 Outlook • April 22, 2026

Observation History — Campbellsport, WI

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)
05:30 PM CDT E 9.2 10.00 Clear -- 66.2 41.0 40% NA NA 29.93 1013.5
05:10 PM CDT 8.1 10.00 Clear -- 66.2 39.2 37% NA NA 29.94 1013.9
05:05 PM CDT 6.9 10.00 Clear -- 66.2 39.2 37% NA NA 29.95 1014.2
05:00 PM CDT 8.1 10.00 Clear -- 66.2 39.2 37% NA NA 29.95 1014.2
04:35 PM CDT E 8.1 10.00 Clear -- 66.2 39.2 37% NA NA 29.95 1014.2
04:25 PM CDT 8.1 10.00 Clear -- 66.2 39.2 37% NA NA 29.95 1014.2
04:10 PM CDT E 6.9 10.00 Clear -- 66.2 37.4 35% NA NA 29.96 1014.6
04:05 PM CDT 4.6 10.00 Clear -- 66.2 37.4 35% NA NA 29.96 1014.6
03:50 PM CDT E 6.9 10.00 Clear -- 66.2 37.4 35% NA NA 29.95 1014.2
03:35 PM CDT E 9.2 10.00 Clear -- 64.4 35.6 34% NA NA 29.96 1014.6
03:20 PM CDT E 6.9 10.00 Clear -- 66.2 37.4 35% NA NA 29.96 1014.6
03:10 PM CDT E 10.4 10.00 Clear -- 64.4 35.6 34% NA NA 29.96 1014.6
03:05 PM CDT 11.5 10.00 Clear -- 64.4 35.6 34% NA NA 29.96 1014.6
02:50 PM CDT E 9.2 10.00 Clear -- 64.4 35.6 34% NA NA 29.97 1014.9
02:30 PM CDT 11.5 10.00 Clear -- 64.4 35.6 34% NA NA 29.98 1015.2
02:15 PM CDT 9.2 10.00 Clear -- 64.4 33.8 32% NA NA 29.98 1015.2
02:10 PM CDT 6.9 10.00 Clear -- 64.4 35.6 34% NA NA 29.99 1015.6
02:00 PM CDT 5.7 10.00 Clear -- 64.4 33.8 32% NA NA 29.99 1015.6
01:35 PM CDT 8.1 10.00 Clear -- 62.6 33.8 34% NA NA 29.99 1015.6
01:20 PM CDT 8.1 10.00 Clear -- 62.6 33.8 34% NA NA 29.99 1015.6
01:10 PM CDT 10.4 10.00 Clear -- 60.8 33.8 36% NA NA 29.99 1015.6
12:53 PM CDT NE 9.2 10.00 Clear -- 61.0 34.0 36% NA NA 29.99 1015.6
12:35 PM CDT 9.2 10.00 Clear -- 60.8 33.8 36% NA NA 30.00 1015.9
12:25 PM CDT 9.2 10.00 Clear -- 60.8 33.8 36% NA NA 30.00 1015.9

Regional Weather Observation

OSHKOSH (KOSH)

Clear
66.2 F

FOND DU LAC (KFLD)

Clear
68.0 F

JUNEAU (KUNU)

Clear
70.5 F

WEST BEND (KETB)

Clear
68.0 F

APPLETON/OUTAGAM (KATW)

Clear
68.0 F

MILWAUKEE/LAWREN (KMWC)

Clear
60.8 F
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