Hazardous Weather Conditions
Current conditions at
Janesville-Rock County (KJVL)
Lat: 42.62°NLon: 89.04°WElev: 801ft.
Fair
34°F
1°C
| Humidity | 75% |
| Wind Speed | W 6 mph |
| Barometer | 30.05 in |
| Dewpoint | 27°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 29°F (-2°C) |
| Last update | 19 Apr 2:15 am CDT |
Extended Forecast for
Alden IL
Frost Advisory April 19, 02:40am until April 19, 09:00am
Freeze Warning April 20, 12:00am until April 20, 09:00am
NOW until 9:00am Sun

Frost Advisory
Overnight

Low: 31 °F
Areas Frost
Sunday

High: 46 °F
Chance
ShowersSunday Night
Low: 27 °F
Slight Chance
Showers then
FrostMonday

High: 50 °F
Frost then
SunnyMonday Night

Low: 40 °F
Partly Cloudy
Tuesday

High: 70 °F
Sunny
Tuesday Night

Low: 44 °F
Mostly Clear
Wednesday

High: 72 °F
Sunny
Detailed Forecast
Overnight
Areas of frost. Otherwise, mostly clear, with a low around 31. West southwest wind around 5 mph.
Sunday
A 30 percent chance of showers, mainly between 10am and 4pm. Increasing clouds, with a high near 46. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A 10 percent chance of showers before 7pm. Widespread frost after midnight. Otherwise, mostly clear, with a low around 27. Northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 50. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 40. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Showers likely. Mostly cloudy, with a low around 59.
Friday
Showers likely. Mostly cloudy, with a high near 69.
Friday Night
A chance of showers. Mostly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 62.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Alden IL
42.46°N 88.52°W
42.46°N 88.52°W
1:21 am CDT Apr 19, 2026
2am CDT Apr 19, 2026-6pm CDT Apr 25, 2026



