Local weather forecast

Weather in Sister Bay, WI

Updated 2026-08-11 12:45 local time · ZIP codes 54234

Sunny
Now75°F

Sunny

High / Low81° / 63°
Rain chance10%
Wind5 mph
Weather alerts

Active alerts

1
Dense Fog Advisory issued August 10 at 10:51PM CDT until August 11 at 10:00AM CDT by NWS Green Bay WI

* WHAT...Dense fog will reduce visibility to 1/2 NM or less. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan. * WHEN...Until 10 AM CDT Tuesday. * IMPACTS...Low visibility will make navigation difficult.

Safety instructions

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.

Hourly

Next hours

NowSunny75°3% rain
2 PMSunny79°3% rain
3 PMSunny81°2% rain
4 PMSunny81°3% rain
5 PMSunny78°4% rain
6 PMSunny76°6% rain
7 PMSunny71°11% rain
8 PMSunny68°13% rain
9 PMClear66°15% rain
10 PMClear65°15% rain
11 PMClear65°15% rain
12 AMPatchy rain nearby67°37% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
81° 63°Sunny
Rain 10%Gust 12 mph
Tomorrow2026-08-12
Sunny
73° 67°Sunny
Rain 36%Gust 11 mph
Thursday2026-08-13
Partly Cloudy
70° 64°Partly Cloudy
Rain 36%Gust 21 mph
Conditions

Weather details

Feels like78°F
Humidity69%
Pressure29.96 inHg
Visibility10 mi
Wind5 mph E
Wind gusts7 mph
Precipitation0.00 in
UV index6
Daylight

Sunrise, sunset and moon

Sunrise05:45 AM
Sunset08:02 PM
Moonrise03:37 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Umbrella may help

There is a moderate rain chance, peaking near 37%.

Light layers should work

It feels like 78°F with winds near 5 mph.

Best window: 6 PM

76°F, 6% rain chance and 11 mph wind.

Allow a little extra driving time

Visibility is around 10 mi; gusts may reach 20 mph.

Run with a few weather adjustments

Current temperature is 75°F, wind 5 mph, rain chance up to 37%.

Moderate UV protection recommended

UV index is 6. Sunscreen and sunglasses are sensible for longer outdoor time.

Sister Bay weather today

Sunny and 75°F in Sister Bay, WI. Today's high is 81°F with a 10% rain chance. Winds are around 5 mph with gusts near 7 mph. Relative humidity is 69%, pressure is 29.96 inHg, and visibility is about 10 miles.

Tonight and tomorrow in Sister Bay

Sunrise is at 05:45 AM and sunset is at 08:02 PM. Tomorrow's forecast calls for Sunny with a high near 73°F and a low near 67°F. The maximum rain chance is 36%.

Nearby

Weather near Sister Bay

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