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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

48°F

9°C

Humidity 50%
Wind Speed NW 13 mph
Barometer 30.03 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 1 May 11:45 am CDT
Extended Forecast for

Roscoe IL

Frost Advisory May 2, 01:00am until May 2, 08:00am
Click here for hazard details and duration
Frost Advisory

  • This Afternoon

    This Afternoon: A 20 percent chance of showers after 3pm. Partly sunny, with a high near 52. North wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 52 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Widespread frost, mainly after 3am. Otherwise, partly cloudy, with a low around 33. North wind around 5 mph becoming calm after midnight.

    Low: 33 °F

    Mostly Cloudy
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 55. Light north northwest wind increasing to 5 to 10 mph in the morning.

    High: 55 °F

    Frost then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. West southwest wind 5 to 10 mph becoming south in the evening. Winds could gust as high as 15 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 64. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 64 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers. Partly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers after 1pm. Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers after 3pm. Partly sunny, with a high near 52. North wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Widespread frost, mainly after 3am. Otherwise, partly cloudy, with a low around 33. North wind around 5 mph becoming calm after midnight.
Saturday
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 55. Light north northwest wind increasing to 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 40. West southwest wind 5 to 10 mph becoming south in the evening. Winds could gust as high as 15 mph.
Sunday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 64. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 45.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 73.
Monday Night
A chance of showers. Partly cloudy, with a low around 44.
Tuesday
A chance of showers after 1pm. Partly sunny, with a high near 60.
Tuesday Night
A chance of showers before 1am. Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 57.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe IL
 42.43°N 89.02°W
Last Update:
11:36 am CDT May 1, 2026
Forecast Valid:
12pm CDT May 1, 2026-6pm CDT May 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation