Lannon, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Lannon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Drizzle31%0.08″82°65°—
- SundayJul 5Overcast10%—80°62°-2°
- MondayJul 6Overcast——77°59°-3°
- TuesdayJul 7Overcast——80°57°+3°
- WednesdayJul 8Heavy Drizzle32%—80°60°0°
- ThursdayJul 9Showers50%0.07″69°62°-11°
- FridayJul 10Partly Cloudy32%—77°59°+8°
AQI 41 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 12.9 µg/m³, PM10 at 14.0 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 38 now. With UV 6.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 22 around 1 PM.
- Present
- AQI 38
- UV peak
- 6.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 22
PM × Wind × Precip
PM2.5 at 12.9 µg/m³, PM10 at 14.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- light
- Recent rain
- 1h 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
- 10:52 PM
- Moonset
- 9:55 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Lannon at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: May 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 53046
16-Day Forecast — Lannon
- Sat81°66°31%
- Sun80°62°10%
- Mon77°59°0%
- Tue80°57°2%
- Wed80°60°32%
- Thu69°62°50%
- Fri77°59°32%
- Sat79°61°7%
- Sun66°58°11%
- Mon75°55°9%
- Tue75°59°7%
- Wed80°62°23%
- Thu83°66°14%
- Fri84°67°14%
- Sat83°66°23%
- Sun85°66°29%
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 — Lannon
SPC includes Lannon 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 Lannon
- 53046