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Review of the June 10 and 11, 2026 Derecho and QLCS

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62° N Lon: 89.04° W Elev: 801 ft.

Fair

61°F

16°C

Humidity	83%
Wind Speed	E 7 mph
Barometer	30.05 in
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	26 Jun 10:30 pm CDT

More Information:

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

Detailed forecast for

Rock County

Tonight

Mostly clear. Lows in the mid 50s. East winds up to 10 mph.

Saturday

Sunny. Highs around 80. East winds 5 to 10 mph.

Saturday Night

Partly cloudy. Lows in the upper 50s. East winds 5 to 10 mph.

Sunday

Partly sunny. A 40 percent chance of light showers in the morning. Highs in the mid 80s. Southeast winds 10 to 15 mph.

Sunday Night

Warmer. Partly cloudy. Lows in the lower 70s. South winds 10 to 15 mph.

Monday

Mostly sunny. Highs in the lower 90s.

Monday Night

Partly cloudy. Lows in the mid 70s.

Tuesday

Mostly sunny. Highs in the lower 90s.

Tuesday Night

Mostly clear. Lows in the mid 70s.

Wednesday

Mostly sunny. A 20 percent chance of light showers and thunderstorms in the afternoon. Highs in the lower 90s.

Wednesday Night

Mostly clear. Lows in the mid 70s.

Thursday

Sunny. Slight chance of light showers in the morning, then slight chance of light showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of precipitation 20 percent.

Thursday Night

Partly cloudy. A 20 percent chance of light showers and thunderstorms after midnight. Lows in the lower 70s.

Friday

Mostly sunny. Slight chance of light showers and thunderstorms in the morning, then showers likely and chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 60 percent.