JANESVILLE, WI 53545 Weather Forecast & Current Conditions
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  53545 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

JANESVILLE, WI
Current Weather
5:45 AM CDT JUN 9, 2026
Broken Clouds
Mist
72°F
Feels Like: 72°F
Dewpoint: 70°F
Rel. Hum.: 93%
Visibility: 4 miles
Wind: Calm
Pressure: 29.90 inches
Last 72 hours

Local Area Snow Depth

Wisconsin Current Weather

Wisconsin MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  53545 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

JANESVILLE, WI 53545
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
EARLY THIS MORNING
Mostly cloudy with chance of light showers and slight chance of thunderstorms. Patchy fog. Southwest winds up to 5 mph. Chance of precipitation 30 percent.
TODAY
Mostly cloudy. Patchy fog in the morning. A 20 percent chance of light showers and thunderstorms in the morning. Highs in the mid 80s. West winds 5 to 10 mph.
TONIGHT
Partly cloudy until early morning then becoming mostly cloudy. A 50 percent chance of light showers and thunderstorms after midnight. Lows in the mid 60s. Northwest winds up to 5 mph shifting to the south after midnight.
WEDNESDAY
Very warm and humid. Partly sunny. A 50 percent chance of light showers and thunderstorms in the late morning and afternoon. Highs around 90. South winds 10 to 20 mph. Highest heat index readings 95 to 99 in the late morning and afternoon.
WEDNESDAY NIGHT
Mostly cloudy with showers likely and chance of thunderstorms through around midnight, then partly cloudy with slight chance of light showers after midnight. Lows in the upper 60s. Southwest winds 15 to 20 mph decreasing to 5 to 10 mph after midnight. Chance of precipitation 70 percent. Highest heat index readings 95 to 96 in the evening.
THURSDAY
Partly sunny. Chance of light showers in the morning, then showers and chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon. Chance of precipitation 90 percent.
THURSDAY NIGHT
Mostly cloudy with rain showers likely and chance of thunderstorms through around midnight, then mostly clear with slight chance of light rain showers after midnight. Cooler. Lows in the upper 50s. Chance of precipitation 70 percent.
FRIDAY
Sunny. Highs in the upper 70s.
FRIDAY NIGHT
Clear. Lows in the upper 50s.
SATURDAY
Sunny. Highs in the lower 80s.
SATURDAY NIGHT
Partly cloudy. Chance of light rain showers and slight chance of thunderstorms through around midnight, then chance of light rain showers after midnight. Lows in the upper 50s. Chance of precipitation 30 percent.
SUNDAY
Partly sunny with a 30 percent chance of light rain showers. Highs in the mid 70s.
SUNDAY NIGHT
Partly cloudy. A 20 percent chance of light rain showers through around midnight. Lows in the lower 50s.

  53545 WEATHER SATELLITE LOOPS
Visible Weather Satellite
JANESVILLE, WI 53545
Infrared Weather Satellite
JANESVILLE, WI 53545
  53545 WEATHER RADAR LOOP
NEXRAD Weather Radar
JANESVILLE, WI 53545
 MOS COMPUTER WEATHER FORECAST

JANESVILLE, WI 3 hourly weather forecast
weather forecast created  7:00 PM CDT  6/ 8/2026
Tuesday
9 JUN 2026		 JANESVILLE, WI 53545 weather forecast Day 1, 0 hours 1 AM 70° 70° Mostly Cloudy 52%
RAIN
.01–.1 in		 0% Thunder
( 25% severe)		   CALM 87% 66°
Low 67° JANESVILLE, WI 53545 weather forecast Day 1, 3 hours 4 AM 68° 68° Mostly Cloudy   CALM 90% 65°
High 87° JANESVILLE, WI 53545 weather forecast Day 1, 6 hours 7 AM 69° 69° Mostly Cloudy 13%
RAIN
.01–.1 in		 0% Thunder
( 15% severe)		 SW   2 93% 67°

Mostly Cloudy



 JANESVILLE, WI 53545 weather forecast Day 1, 9 hours 10 AM 75° 75° Mostly Cloudy W   7 82% 69°
JANESVILLE, WI 53545 weather forecast Day 1, 12 hours 1 PM 82° 85° Mostly Cloudy 13%
RAIN
<.01 in		 0% Thunder
( 18% severe)		 WNW   8 63% 68°
JANESVILLE, WI 53545 weather forecast Day 1, 15 hours 4 PM 86° 89° Mostly Cloudy W   8 55% 68°
JANESVILLE, WI 53545 weather forecast Day 1, 18 hours 7 PM 86° 90° Mostly Cloudy 8%

 0% Thunder
( 26% severe)		 W   3 57% 69°
JANESVILLE, WI 53545 weather forecast Day 1, 21 hours 10 PM 75° 75° Partly Cloudy   CALM 76% 67°
Wednesday
10 JUN 2026		 JANESVILLE, WI 53545 weather forecast Day 2, 0 hours 1 AM 72° 72° Partly Cloudy 54%
RAIN
***		 0% Thunder
( 35% severe)		 S   3 81% 66°
Low 66° JANESVILLE, WI 53545 weather forecast Day 2, 3 hours 4 AM 69° 69° Mostly Cloudy SSE   6 90% 66°
High 92° JANESVILLE, WI 53545 weather forecast Day 2, 6 hours 7 AM 72° 72° Mostly Cloudy 10%
RAIN
.01–.1 in		 0% Thunder
( 18% severe)		 SSE   10 90% 69°

Mostly Cloudy

Chance of Rain

 JANESVILLE, WI 53545 weather forecast Day 2, 9 hours 10 AM 80° 84° Mostly Cloudy SSW   15 77% 72°
JANESVILLE, WI 53545 weather forecast Day 2, 12 hours 1 PM 88° 94° Partly Cloudy 29%
RAIN
.1–.25 in		 0% Thunder
( 45% severe)		 SSW   17 57% 71°
JANESVILLE, WI 53545 weather forecast Day 2, 15 hours 4 PM 91° 97° Mostly Cloudy SSW   21 50% 70°
JANESVILLE, WI 53545 weather forecast Day 2, 18 hours 7 PM 88° 93° Partly Cloudy 59%
RAIN
***		 0% Thunder
( 36% severe)		 SSW   20 55% 70°
JANESVILLE, WI 53545 weather forecast Day 2, 21 hours 10 PM 79° 81° Mostly Cloudy SW   16 69% 68°

JANESVILLE, WI extended weather forecast
Thursday
11 JUN 2026		 Friday
12 JUN 2026		 Saturday
13 JUN 2026		 Sunday
14 JUN 2026		 Monday
15 JUN 2026
Low 69° Low 60° Low 57° Low 61° Low 57°
High 86° High 81° High 82° High 75° High 76°
JANESVILLE, WI 53545 weather forecast Day 3 JANESVILLE, WI 53545 weather forecast Day 4 JANESVILLE, WI 53545 weather forecast Day 5 JANESVILLE, WI 53545 weather forecast Day 6 JANESVILLE, WI 53545 weather forecast Day 7
Mostly Cloudy
96% Rain		 Mostly Cloudy
50% Rain		 Partly Cloudy
20% Rain		 Overcast
63% Rain		 Mostly Cloudy
57% Rain
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