Beyond the Warning Presentation in Oglesby on 3/10/2026 POSTPONED

Due to the potential for severe thunderstorms on Tuesday, March 10th, the Beyond the Warning seminar in Oglesby, IL has been POSTPONED. We intend to reschedule this session later this spring. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog

48°F

9°C

Humidity	100%
Wind Speed	E 3 mph
Barometer	29.73 in
Dewpoint	48°F (9°C)
Visibility	0.15 mi
Last update	10 Mar 3:15 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Alden IL

Dense Fog Advisory until March 10, 11:00am

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory until March 10, 11:00am
NOW until 11:00am Tue
Dense Fog Advisory
Overnight
Low: 52 °F
Patchy Dense
Fog
Tuesday
High: 48 °F⇓
Areas Dense
Fog then
Severe
Thunderstorms
Tuesday Night
Low: 36 °F
Severe
Thunderstorms
Wednesday
High: 37 °F
Rain/Snow
Wednesday Night
Low: 23 °F
Slight Chance
Rain/Snow
then Mostly
Clear
Thursday
High: 46 °F
Mostly Sunny
Thursday Night
Low: 35 °F
Showers
Likely and
Breezy
Friday
High: 46 °F
Partly Sunny
and Breezy

Detailed Forecast

Overnight

Patchy dense fog. Otherwise, cloudy, with a steady temperature around 52. West southwest wind around 5 mph.

Tuesday

A slight chance of drizzle before 4pm, then a slight chance of drizzle and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Some of the storms could be severe. Areas of dense fog before 11am. Otherwise, mostly cloudy, with a temperature falling to around 43 by 5pm. East northeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Tuesday Night

Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Some of the storms could be severe. Low around 36. East northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

Rain and snow showers, mainly before 4pm. High near 37. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday Night

A slight chance of rain and snow showers before 7pm. Partly cloudy, with a low around 23. Northwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 10%.

Thursday

Mostly sunny, with a high near 46.

Thursday Night

Showers likely, mainly after 1am. Cloudy, with a low around 35. Breezy. Chance of precipitation is 70%.

Friday

Partly sunny, with a high near 46. Breezy.

Friday Night

Mostly cloudy, with a low around 26.

Saturday

A chance of rain and snow after 1pm. Cloudy, with a high near 46.

Saturday Night

Rain likely. Cloudy, with a low around 32.