There is a new URL for this page, be sure to update your bookmarks: Sun Prairie, WI 5-Day Weather Forecast
Sun Prairie, WI Weather Forecast | 5 Day
Updated: Fri Jun 20th 2025 12:15 PM CDT
Ask About Weather
Test our newly developed Weather Chatbot. It provides up to 10 days of forecast information!
Moderate Rain
Fri 6-20
Moderate Rain with a high of 74°F and a low of 61°F. It will likey rain, having a 83% chance of a downpour with an estimated 0.74in. Wind will be moderate, blowing around 18mph on average and gusts of 25.3mph at 4 PM. High humidity with average of 92% is anticipated, the maximum being 97% at 1 PM and 85% being its lowest at 5 PM. Barometric pressure is its highest of 29.84inHg at 1 PM, a lowest point of 29.74inHg at 6 PM with an avg 29.77inHg.
- HI: 74°F
- LO: 61°F
- Rainfall: 83% | est. 0.74in
- Snowfall: 0%
- Wind
17.2 mph - Humidity
92% avg. - UV Index
2.2 - Air QualityGood
- Sunrise
05:17 AM - Sunset
08:40 PM - Moonrise
01:32 AM - Moonset
03:24 PM - Moon Phase
Waning Crescent

Sunny
Sat 6-21
Sunny with a high of 96°F and a low of 73°F. Winds will be strong at speeds peaking at 23mph and gusts of 35.3mph at 8 PM. The humidity will be on the higher side, averaging about 80%, the maximum being 99% at 5 AM and 62% being its lowest at 4 PM. Barometric pressure is its highest of 29.76inHg at 11 PM, a lowest point of 29.64inHg at 4 PM with an avg 29.69inHg.
- HI: 96°F
- LO: 73°F
- Rainfall: 0%
- Snowfall: 0%
- Wind
23 mph - Humidity
80% avg. - UV Index
2.6 - Air QualityGood
- Sunrise
05:17 AM - Sunset
08:40 PM - Moonrise
01:57 AM - Moonset
04:44 PM - Moon Phase
Waning Crescent

Sunny
Sun 6-22
Sunny with a high of 96°F and a low of 76°F. Wind will be moderate, blowing around 20mph on average and gusts of 30.6mph at 12 AM. The humidity will be on the higher side, averaging about 73%, the maximum being 88% at 5 AM and 58% being its lowest at 4 PM. Barometric pressure is its highest of 29.89inHg at 10 PM, a lowest point of 29.76inHg at 12 AM with an avg 29.85inHg.
- HI: 96°F
- LO: 76°F
- Rainfall: 0%
- Snowfall: 0%
- Wind
19.2 mph - Humidity
73% avg. - UV Index
2.8 - Air QualityGood
- Sunrise
05:18 AM - Sunset
08:40 PM - Moonrise
02:26 AM - Moonset
06:07 PM - Moon Phase
Waning Crescent

Patchy Rain Nearby
Mon 6-23
Scattered showers with a high of 94°F and a low of 72°F. It will likey rain in the surrounding area, having a 89% chance of a downpour with an estimated 0.09in. Wind will be moderate, blowing around 19mph on average and gusts of 28.8mph at 2 AM. The humidity will be on the higher side, averaging about 75%, the maximum being 97% at 10 PM and 64% being its lowest at 1 PM. Barometric pressure is its highest of 30.08inHg at 10 PM, a lowest point of 29.92inHg at 12 AM with an avg 30inHg.
- HI: 94°F
- LO: 72°F
- Rainfall: 89% | est. 0.09in
- Snowfall: 0%
- Wind
18.3 mph - Humidity
75% avg. - UV Index
2.8 - Air QualityGood
- Sunrise
05:18 AM - Sunset
08:40 PM - Moonrise
03:05 AM - Moonset
07:27 PM - Moon Phase
Waning Crescent

Moderate Rain
Tue 6-24
Moderate Rain with a high of 76°F and a low of 59°F. It will likey rain, having a 86% chance of a downpour with an estimated 0.61in. Wind will be moderate, blowing around 14mph on average and gusts of 23.3mph at 9 PM. High humidity with average of 89% is anticipated, the maximum being 98% at 3 AM and 77% being its lowest at 3 PM. Barometric pressure is its highest of 30.2inHg at 12 PM, a lowest point of 30.1inHg at 12 AM with an avg 30.16inHg.
- HI: 76°F
- LO: 59°F
- Rainfall: 86% | est. 0.61in
- Snowfall: 0%
- Wind
13.6 mph - Humidity
89% avg. - UV Index
0.1 - Air QualityGood
- Sunrise
05:18 AM - Sunset
08:41 PM - Moonrise
03:55 AM - Moonset
08:38 PM - Moon Phase
Waning Crescent

Moderate Rain
Wed 6-25
Moderate Rain with a high of 83°F and a low of 58°F. Rainfall expected to have a 64% chance with an estimated 0.29in. Wind will be moderate, blowing around 12mph on average and gusts of 18.7mph at 7 PM. High humidity with average of 88% is anticipated, the maximum being 96% at 3 AM and 71% being its lowest at 1 PM. Barometric pressure is its highest of 30.15inHg at 12 AM, a lowest point of 29.98inHg at 7 PM with an avg 30.05inHg.
- HI: 83°F
- LO: 58°F
- Rainfall: 64% | est. 0.29in
- Snowfall: 0%
- Wind
11.2 mph - Humidity
88% avg. - UV Index
5 - Air QualityTBA
- Sunrise
05:19 AM - Sunset
08:41 PM - Moonrise
04:58 AM - Moonset
09:36 PM - Moon Phase
New Moon
Currently
![]() |
63°F |
29.91 inHg.
Barometer 96%
Humidity SW 25.2 mph Wind |
Overcast |