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 >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog

45°F

7°C

Humidity	100%
Wind Speed	SE 5 mph
Barometer	29.72 in
Dewpoint	45°F (7°C)
Visibility	0.15 mi
Wind Chill	42°F (6°C)
Last update	10 Mar 1:55 am CDT

More Information:

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

Extended Forecast for

South Beloit IL

Overnight
Low: 51 °F
Patchy Fog
Tuesday
High: 52 °F
Patchy Fog
then Severe
Thunderstorms
Tuesday Night
Low: 36 °F
Severe
Thunderstorms
Wednesday
High: 38 °F
Rain/Snow
Wednesday Night
Low: 23 °F
Partly Cloudy
Thursday
High: 46 °F
Mostly Sunny
Thursday Night
Low: 36 °F
Showers
Likely and
Breezy
Friday
High: 46 °F
Partly Sunny
and Breezy
Friday Night
Low: 27 °F
Mostly Cloudy

Detailed Forecast

Overnight

Patchy fog after 4am. Otherwise, partly cloudy, with a steady temperature around 51. South southwest wind around 5 mph, with gusts as high as 10 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. Patchy fog before 11am. Otherwise, increasing clouds, with a high near 52. 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, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Snow showers, possibly mixed with rain, mainly before 1pm. High near 38. North 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

Partly cloudy, with a low around 23. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

Thursday

Mostly sunny, with a high near 46.

Thursday Night

Showers likely, mainly after 1am. Mostly cloudy, with a low around 36. Breezy. Chance of precipitation is 70%.

Friday

Partly sunny, with a high near 46. Breezy.

Friday Night

Mostly cloudy, with a low around 27.

Saturday

A chance of snow showers before 1pm, then a chance of rain and snow showers. Cloudy, with a high near 47.