Prairie du Sac, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Prairie du Sac weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast22%—82°65°—
- SundayJul 5Overcast11%—81°66°-1°
- MondayJul 6Clear——77°60°-4°
- TuesdayJul 7Overcast——81°59°+4°
- WednesdayJul 8T-storm w/ Hail42%0.02″79°65°-2°
- ThursdayJul 9Overcast51%—75°64°-4°
- FridayJul 10Light Drizzle15%—77°63°+2°
AQI 29 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 45. Overcast through the UV peak window (cloud cover ~86%) — afternoon ozone should stay flat.
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 45. Overcast through the UV peak window (cloud cover ~86%) — afternoon ozone should stay flat.
- Present
- AQI 45
- UV peak
- 6.7 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 20
PM × Wind × Precip
PM2.5 at 7.0 µg/m³ (AQI 39) with a 0.82 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.82
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 10:58 PM
- Moonset
- 10:01 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Prairie du Sac at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: May 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 53578
16-Day Forecast — Prairie du Sac
- Sat82°65°22%
- Sun81°66°11%
- Mon77°60°2%
- Tue81°59°3%
- Wed79°65°42%
- Thu75°64°51%
- Fri77°63°15%
- Sat76°59°8%
- Sun76°55°12%
- Mon75°55°9%
- Tue81°58°6%
- Wed78°61°19%
- Thu82°63°7%
- Fri80°65°16%
- Sat71°60°26%
- Sun75°55°32%
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 — Prairie du Sac
SPC includes Prairie du Sac in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- 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 Prairie du Sac
- 53578