Sister Bay, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Sister Bay weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain—0.07″77°66°—
- SundayJul 5Overcast——78°59°+1°
- MondayJul 6Clear——77°59°-1°
- TuesdayJul 7Overcast——80°57°+3°
- WednesdayJul 8Showers47%0.44″81°63°+1°
- ThursdayJul 9Overcast52%—74°58°-7°
- FridayJul 10Overcast19%—77°56°+3°
AQI 38 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 37 now. With UV 0.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 6 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 37 now. With UV 0.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 6 around 1 PM.
- Present
- AQI 37
- UV peak
- 0.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 6
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:51 PM
- Moonset
- 9:48 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Sister Bay at a glance
- Today vs. normal: 66°F — typical for the season
- Last frost: May 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 54234
16-Day Forecast — Sister Bay
- Sat77°66°9%
- Sun78°59°4%
- Mon77°59°1%
- Tue80°57°6%
- Wed81°63°47%
- Thu74°58°52%
- Fri77°56°19%
- Sat83°62°14%
- Sun64°56°14%
- Mon75°58°13%
- Tue76°62°16%
- Wed77°63°20%
- Thu80°66°29%
- Fri87°66°25%
- Sat80°62°19%
- Sun78°64°23%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Sister Bay
SPC includes Sister Bay in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Sister Bay
- 54234