Lancaster, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Lancaster weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle34%0.02″81°66°—
- SundayJul 5Foggy26%—83°68°+2°
- MondayJul 6Clear——80°63°-3°
- TuesdayJul 7Overcast——82°61°+2°
- WednesdayJul 8Thunderstorm36%1.2″81°62°-1°
- ThursdayJul 9Thunderstorm42%0.02″75°66°-6°
- FridayJul 10Overcast13%—78°60°+3°
AQI 31 (Good), driven by PM2.5. AQI up 6 over the last 6 hours (gradual rise). PM2.5 at 10.4 µg/m³, PM10 at 14.3 µg/m³ — typical background levels with no transport signature.
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 32. Overcast through the UV peak window (cloud cover ~98%) — afternoon ozone should stay flat.
- Present
- AQI 32
- UV peak
- 4.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 10.4 µg/m³, PM10 at 14.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.73
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:01 PM
- Moonset
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Lancaster at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 53813
16-Day Forecast — Lancaster
- Sat81°66°34%
- Sun83°68°26%
- Mon80°63°1%
- Tue82°61°3%
- Wed81°62°36%
- Thu75°66°42%
- Fri78°60°13%
- Sat83°63°10%
- Sun68°57°11%
- Mon75°54°9%
- Tue78°60°10%
- Wed79°62°19%
- Thu81°66°13%
- Fri82°66°23%
- Sat86°68°26%
- Sun83°70°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 — Lancaster
SPC includes Lancaster 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 Lancaster
- 53813