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August 2026 Upper Mississippi River Valley Weather Summary

Current conditions at

Lone Rock Tri-County Regional Airport (KLNR)

Lat: 43.21°NLon: 90.19°WElev: 712ft.

Partly Cloudy

75°F

24°C

Humidity	96%
Wind Speed	Calm
Barometer	29.87 in (1010.4 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Last update	4 Sep 4:56 am CDT

More Information:

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

Extended Forecast for

Richland Center WI

Overnight
Low: 70 °F
Chance
Showers
Friday
High: 88 °F
Chance
Showers then
Slight Chance
T-storms
Friday Night
Low: 68 °F
Partly Cloudy
then Patchy
Fog
Saturday
High: 85 °F
Areas Fog
then Mostly
Sunny
Saturday Night
Low: 62 °F
Partly Cloudy
Sunday
High: 82 °F
Partly Sunny
Sunday Night
Low: 61 °F
Mostly Cloudy
Labor Day
High: 81 °F
Partly Sunny
Monday Night
Low: 63 °F
Mostly Cloudy
then Slight
Chance
Showers

Detailed Forecast

Overnight

A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 88. Heat index values as high as 97. Southwest wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

Patchy fog after 1am. Otherwise, partly cloudy, with a low around 68. Light and variable wind.

Saturday

Areas of fog before 10am. Otherwise, mostly sunny, with a high near 85. Northeast wind 3 to 6 mph.

Saturday Night

Partly cloudy, with a low around 62. Light east wind.

Sunday

Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

Sunday Night

Mostly cloudy, with a low around 61. Light southeast wind.

Labor Day

Partly sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the morning.

Monday Night

A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 63. Southeast wind around 7 mph.

Tuesday

A 50 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 83. South wind 8 to 11 mph, with gusts as high as 21 mph.

Tuesday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. South wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

Wednesday

Partly sunny, with a high near 85. West wind 5 to 8 mph.

Wednesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. Southwest wind around 5 mph becoming light and variable in the evening.

Thursday

Partly sunny, with a high near 79. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.