Current Conditions

Janesville, Wisconsin

89°F32°C

Drizzle

Feels like95°F35°C

Wind

SW 7 mph11 km/h

Humidity

56%

Cloud Cover

58%

As of Wednesday, September 2, 2026 at 1:22 PM CDT

Today's Outlook

Day

Mostly cloudy and hot, with a high of 92°F33°C and morning low of 73°F23°C — feels like 99°F37°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle in the afternoon. Heat risk in the afternoon.

Night

Mostly clear, with a low around 79°F26°C. Light wind from the S around 4 mph6 km/h. 10% chance of drizzle throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 92°F33°CFeels 98°F37°C	Low 73°F23°C	Precip 0.02 in0.6 mm13%	Cloud 48%	Wind SW 5 mph8 km/h	Wednesday: Mostly cloudy and hot, with a high of 92°F33°C and morning low of 73°F23°C — feels like 99°F37°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle in the afternoon. Heat risk in the afternoon. Wednesday Night: Mostly clear, with a low around 79°F26°C. Light wind from the S around 4 mph6 km/h. 10% chance of drizzle throughout the night.
Drizzle	High 87°F31°CFeels 92°F34°C	Low 74°F24°C	Precip 0.05 in1.3 mm19%	Cloud 47%	Wind SSE 5 mph8 km/h	Thursday: Mostly cloudy and hot, with a high of 87°F31°C and morning low of 74°F24°C — feels like 93°F34°C. Light wind from the SSW around 5 mph8 km/h. 19% chance of drizzle throughout the day. Humid. Thursday Night: Partly cloudy, with a low around 75°F24°C. Light wind from the SSE around 5 mph8 km/h. 12% chance of drizzle before dawn.
Showers	High 87°F31°CFeels 93°F34°C	Low 72°F22°C	Precip 0.19 in4.7 mm39%	Cloud 67%	Wind ESE 6 mph9 km/h	Friday: Overcast and hot, with a high of 87°F31°C and morning low of 72°F22°C — feels like 93°F34°C. Light wind from the SE around 6 mph9 km/h. 33% chance of light rain throughout the day. Heavy, humid air. Friday Night: Mostly cloudy, with a low around 73°F23°C. Light wind from the ESE around 6 mph9 km/h. 39% chance of showers throughout the night.
Showers	High 85°F30°CFeels 91°F33°C	Low 71°F22°C	Precip 0.12 in3.1 mm27%	Cloud 59%	Wind E 6 mph9 km/h	Saturday: Mostly cloudy and warm, with a high of 85°F30°C and morning low of 71°F22°C — feels like 91°F33°C. Light wind from the ENE around 5 mph8 km/h. 21% chance of showers throughout the day. Heavy, humid air. Saturday Night: Mostly cloudy, with a low around 72°F22°C. Light wind from the E around 6 mph9 km/h. 27% chance of showers throughout the night.
Showers	High 82°F28°CFeels 85°F29°C	Low 69°F20°C	Precip 0.1 in2.5 mm17%	Cloud 70%	Wind ESE 5 mph8 km/h	Sunday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 69°F20°C. Light wind from the ESE around 5 mph8 km/h. 17% chance of light rain throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 69°F20°C. Light wind from the E around 5 mph9 km/h. 14% chance of drizzle throughout the night.
Partly Cloudy	High 83°F29°C	Low 67°F19°C	Precip 0.04 in1 mm6%	Cloud 62%	Wind SE 7 mph11 km/h	Monday: Mostly cloudy and warm, with a high of 83°F29°C and morning low of 67°F19°C. Breezy from the SE at 7 to 8 mph11 to 13 km/h. Monday Night: Mostly cloudy, with a low around 67°F20°C. Breezy from the SE at 6 to 8 mph10 to 13 km/h.
Partly Cloudy	High 90°F32°CFeels 93°F34°C	Low 68°F20°C	Precip 0.02 in0.5 mm7%	Cloud 59%	Wind S 9 mph15 km/h	Tuesday: Mostly cloudy and hot, with a high of 90°F32°C and morning low of 68°F20°C. Breezy from the S at 10 to 11 mph16 to 18 km/h. Tuesday Night: Mostly cloudy, with a low around 69°F20°C. Breezy from the S at 9 to 10 mph14 to 17 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	92°F33°C Feels 98°F37°C	73°F23°C	0.02 in0.6 mm· 13%	48%	Drizzle	SW 5 mph8 km/h
DayMostly cloudy and hot, with a high of 92°F33°C and morning low of 73°F23°C — feels like 99°F37°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle in the afternoon. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Light wind from the S around 4 mph6 km/h. 10% chance of drizzle throughout the night.
	ThursdaySep 3	87°F31°C Feels 92°F34°C	74°F24°C	0.05 in1.3 mm· 19%	47%	Drizzle	SSE 5 mph8 km/h
DayMostly cloudy and hot, with a high of 87°F31°C and morning low of 74°F24°C — feels like 93°F34°C. Light wind from the SSW around 5 mph8 km/h. 19% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 75°F24°C. Light wind from the SSE around 5 mph8 km/h. 12% chance of drizzle before dawn.
	FridaySep 4	87°F31°C Feels 93°F34°C	72°F22°C	0.19 in4.7 mm· 39%	67%	Showers	ESE 6 mph9 km/h
DayOvercast and hot, with a high of 87°F31°C and morning low of 72°F22°C — feels like 93°F34°C. Light wind from the SE around 6 mph9 km/h. 33% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 73°F23°C. Light wind from the ESE around 6 mph9 km/h. 39% chance of showers throughout the night.
	SaturdaySep 5	85°F30°C Feels 91°F33°C	71°F22°C	0.12 in3.1 mm· 27%	59%	Showers	E 6 mph9 km/h
DayMostly cloudy and warm, with a high of 85°F30°C and morning low of 71°F22°C — feels like 91°F33°C. Light wind from the ENE around 5 mph8 km/h. 21% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 72°F22°C. Light wind from the E around 6 mph9 km/h. 27% chance of showers throughout the night.
	SundaySep 6	82°F28°C Feels 85°F29°C	69°F20°C	0.1 in2.5 mm· 17%	70%	Showers	ESE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 69°F20°C. Light wind from the ESE around 5 mph8 km/h. 17% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Light wind from the E around 5 mph9 km/h. 14% chance of drizzle throughout the night.
	MondaySep 7	83°F29°C	67°F19°C	0.04 in1 mm· 6%	62%	Partly Cloudy	SE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 83°F29°C and morning low of 67°F19°C. Breezy from the SE at 7 to 8 mph11 to 13 km/h. NightMostly cloudy, with a low around 67°F20°C. Breezy from the SE at 6 to 8 mph10 to 13 km/h.
	TuesdaySep 8	90°F32°C Feels 93°F34°C	68°F20°C	0.02 in0.5 mm· 7%	59%	Partly Cloudy	S 9 mph15 km/h
DayMostly cloudy and hot, with a high of 90°F32°C and morning low of 68°F20°C. Breezy from the S at 10 to 11 mph16 to 18 km/h. NightMostly cloudy, with a low around 69°F20°C. Breezy from the S at 9 to 10 mph14 to 17 km/h.
	WednesdaySep 9	90°F32°C Feels 93°F34°C	75°F24°C	0.07 in1.9 mm· 19%	43%	Showers	SW 9 mph14 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 75°F24°C. Breezy from the WSW at 9 to 10 mph15 to 16 km/h. 19% chance of drizzle in the morning. Humid. NightPartly cloudy, with a low around 77°F25°C. Breezy from the SW at 9 to 11 mph14 to 17 km/h. 17% chance of showers throughout the night.
	ThursdaySep 10	84°F29°C	70°F21°C	0.22 in5.6 mm· 27%	55%	Showers	SW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 70°F21°C. Breezy from the SW at 8 to 9 mph12 to 14 km/h. 23% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 72°F22°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h. 27% chance of showers throughout the night.
	FridaySep 11	82°F28°C	68°F20°C	0.21 in5.3 mm· 23%	57%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the SSW at 9 to 10 mph14 to 15 km/h. 23% chance of showers throughout the day. NightMostly cloudy, with a low around 69°F21°C. Breezy from the S at 8 mph12 km/h. 22% chance of showers throughout the night.
	SaturdaySep 12	80°F27°C	67°F19°C	0.19 in4.8 mm· 28%	61%	Showers	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 67°F19°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 28% chance of showers throughout the night.
	SundaySep 13	78°F26°C	64°F18°C	0.24 in6.1 mm· 25%	59%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 64°F18°C. Breezy from the SW at 9 to 10 mph14 to 16 km/h. 23% chance of showers throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 25% chance of showers throughout the night.
	MondaySep 14	77°F25°C	62°F17°C	0.21 in5.3 mm· 22%	54%	Showers	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 62°F17°C. Breezy from the SW at 8 to 9 mph14 to 15 km/h. 19% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 22% chance of showers throughout the night.
	TuesdaySep 15	77°F25°C	61°F16°C	0.2 in5.2 mm· 23%	50%	Showers	SSW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 61°F16°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 23% chance of showers throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SSW at 7 mph11 km/h. 20% chance of showers throughout the night.
	WednesdaySep 16	75°F24°C	60°F16°C	0.15 in3.7 mm· 19%	53%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 60°F16°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 16% chance of showers throughout the day. NightMostly cloudy, with a low around 62°F16°C. Breezy from the SSW at 7 to 8 mph12 to 12 km/h. 19% chance of showers throughout the night.

Nearby Cities

Beloit12 mi19 km Machesney Park23 mi37 km Loves Park25 mi40 km Rockford29 mi46 km Fitchburg30 mi48 km Belvidere30 mi49 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 42.6828°N, 89.0187°W·Elevation: 255m·Timezone: America/Chicago·Population: 64,123