News Headlines
- This week is Severe Weather Preparedness Week in Illinois! Click here for more details and safety info!
- February 2026 and Meteorological Winter 2025-26 Climate Summaries
- Spring Seminars and Virtual Spotter Training: Click Here for More Information!
- Spring Flood Outlook: Below average to near average flood risk for area river basins
Hazardous Weather Conditions
Current conditions at
Janesville-Rock County (KJVL)
Lat: 42.62°NLon: 89.04°WElev: 801ft.
Fog
37°F
3°C
| Humidity | 100% |
| Wind Speed | E 3 mph |
| Barometer | 29.99 in |
| Dewpoint | 37°F (3°C) |
| Visibility | 0.25 mi |
| Last update | 5 Mar 12:35 am CST |
Extended Forecast for
2 Miles NW Alden IL
Dense Fog Advisory March 5, 12:53am until March 5, 12:00pm
NOW until 12:00pm Thu

Dense Fog Advisory
Overnight

Low: 38 °F
Slight Chance
Showers and
Patchy Dense
FogThursday

High: 47 °F
Slight Chance
Showers and
Areas Dense
FogThursday Night

Low: 39 °F
Patchy Fog
Friday
High: 68 °F
Showers and
Patchy Fog
then Chance
ShowersFriday Night
Low: 51 °F
Breezy.
Showers
Likely then
ShowersSaturday
High: 55 °F
Breezy.
Slight Chance
Showers then
Partly SunnySaturday Night

Low: 32 °F
Mostly Clear
Sunday

High: 59 °F
Sunny and
Breezy
Detailed Forecast
Overnight
A 20 percent chance of showers. Patchy dense fog. Otherwise, cloudy, with a low around 38. East northeast wind around 5 mph.
Thursday
A 20 percent chance of showers before 1pm. Areas of dense fog. Otherwise, cloudy, with a high near 47. Northeast wind 5 to 10 mph.
Thursday Night
Patchy fog. Otherwise, cloudy, with a low around 39. East northeast wind 5 to 10 mph becoming southeast in the evening.
Friday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms, mainly between noon and 3pm. Patchy fog before noon. High near 68. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Friday Night
Showers and thunderstorms likely before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 51. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday
A 20 percent chance of showers before 9am. Partly sunny, with a high near 55. Breezy.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 59. Breezy.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Showers likely. Partly sunny, with a high near 64.
Tuesday Night
Showers. Cloudy, with a low around 38.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 48. Breezy.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
2 Miles NW Alden IL
42.48°N 88.55°W
42.48°N 88.55°W
12:21 am CST Mar 5, 2026
12am CST Mar 5, 2026-6pm CDT Mar 11, 2026



