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Janesville, WI 53548 Weather

Today: Sunny, high 73°F, low 57°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).

Janesville, WI 53548 current weather

72°F

Sunny

Forecast for this hour. No recent report from a nearby station.

H 73° / L 57°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/28/2026, 11:21 AM PT

Hourly forecast

NWS, updated 10/28/2026, 11:21 AM PT

  1. Now72°
  2. 2 PM71°
  3. 3 PM72°
  4. 4 PM73°
  5. 5 PM72°
  6. 6 PM69°
  7. 7 PM66°
  8. 8 PM65°
  9. 9 PM64°
  10. 10 PM64°
  11. 11 PM63°14%
  12. 12 AM63°16%Thu
  13. 1 AM62°22%
  14. 2 AM61°33%
  15. 3 AM60°38%
  16. 4 AM60°30%
  17. 5 AM59°13%
  18. 6 AM58°
  19. 7 AM58°
  20. 8 AM58°
  21. 9 AM59°
  22. 10 AM61°
  23. 11 AM62°
  24. 12 PM63°
  25. 1 PM63°
  26. 2 PM64°
  27. 3 PM64°
  28. 4 PM63°
  29. 5 PM61°
  30. 6 PM56°
  31. 7 PM53°
  32. 8 PM51°
  33. 9 PM49°
  34. 10 PM48°
  35. 11 PM47°
  36. 12 AM46°Fri
  37. 1 AM45°
  38. 2 AM43°
  39. 3 AM42°
  40. 4 AM42°
  41. 5 AM40°
  42. 6 AM40°
  43. 7 AM38°
  44. 8 AM41°
  45. 9 AM44°
  46. 10 AM50°
  47. 11 AM54°
  48. 12 PM57°

10-day forecast

Tap a day for details

  • Today10/2838% chance of precipitationLow 57°High 73°

    This Afternoon: Sunny, with a high near 73. South wind 10 to 15 mph.

    Tonight: A slight chance of rain showers between midnight and 1am, then a slight chance of showers and thunderstorms between 1am and 2am, then a chance of showers and thunderstorms between 2am and 5am. Partly cloudy, with a low around 57. Southwest wind 10 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

    Sunny
  • Thu10/29Low 38°High 66°

    Thursday: Mostly sunny. High near 66, with temperatures falling to around 61 in the afternoon. Northwest wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.

    Thursday Night: Clear, with a low around 38. North wind 0 to 5 mph.

    Mostly Sunny
  • Fri10/3044% chance of precipitationLow 46°High 61°

    Friday: Partly sunny, with a high near 61. East wind 0 to 5 mph.

    Friday Night: A chance of rain showers after 7pm. Cloudy, with a low around 46. East wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

    Partly Sunny
  • Sat10/3162% chance of precipitationLow 47°High 62°

    Saturday: Rain showers likely. Mostly cloudy, with a high near 62. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

    Saturday Night: A chance of rain showers. Cloudy, with a low around 47. East wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

    Rain Showers Likely
  • Sun11/120% chance of precipitationLow 50°High 65°

    Sunday: A slight chance of rain showers. Mostly cloudy, with a high near 65. Chance of precipitation is 20%.

    Sunday Night: Mostly cloudy, with a low around 50.

    Slight Chance Rain Showers
  • Mon11/251% chance of precipitationLow 53°High 66°

    Monday: A chance of rain showers. Partly sunny, with a high near 66. Chance of precipitation is 30%.

    Monday Night: A chance of rain showers. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.

    Chance Rain Showers
  • Tue11/359% chance of precipitationLow 51°High 66°

    Tuesday: Rain showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.

    Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Rain Showers Likely
  • Wed11/4Model blend55% chance of precipitationLow 45°High 65°

    Wednesday: Chance of rain. High near 65°. Low that night near 45°. About 0.25 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Thu11/5Model blend42% chance of precipitationLow 40°High 61°

    Thursday: Chance of rain. High near 61°. Low that night near 40°. About 0.05 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend27% chance of precipitationLow 37°High 58°

    Friday: Mostly cloudy, slight chance of rain. High near 58°. Low that night near 37°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 42.702, -89.082 from the NWS MKX office, updated 10/28/2026, 11:21 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KJVL (Janesville/S Wisconsin Rgnl, 6 mi), model run 10/28/2026, 11:00 AM CDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now72°Sunny0%15 mph
  2. 2 PM71°Sunny0%15 mph
  3. 3 PM72°Sunny0%15 mph
  4. 4 PM73°Sunny0%15 mph
  5. 5 PM72°Sunny0%10 mph
  6. 6 PM69°Mostly Clear0%10 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (last 50 min) and GOES

Latest

Frequently asked questions

What is the high temperature today in Janesville, WI 53548?
The National Weather Service forecast for this afternoon calls for a high near 73°F. Sunny.
Will it rain in Janesville, WI 53548 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Janesville, WI 53548?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 4 to Nov 6) come from the NOAA National Blend of Models, with highs of 58°F to 65°F and up to a 55% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Janesville, WI 53548 today?
Sunrise is about 7:25 AM CDT and sunset is about 5:54 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Janesville, WI 53548?
At Afton - Janesville Wwtp, the 1991 to 2020 normal high in October is 62°F and the normal low is 40°F.

Nearby hazards

Wisconsin hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:General thunderstormsOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: WIBU 2 Fire (0 acres), WIBU 3 Fire (0 acres), WIBU 1 Fire (0 acres), WIBU 4 Fire (0 acres), WIBU 6 Fire (0 acres)

Drought

By county

Rock County, week of 10/20/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
7:25 AM
Sunset
5:54 PM
Daylight
10 hr 29 min
Moon
Waning Gibbous 92% lit
First light (civil dawn)
6:56 AM
Last light (civil dusk)
6:23 PM
Moonrise
7:13 PM
Moonset
10:36 AM

Normal October weather

Climate

Normal October high 62°, low 40°, precipitation 2.99 in for the month. 1991 to 2020 normals at Afton - Janesville Wwtp, 5 mi away.

Other places nearby

Data sources

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About this data

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