Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Waukesha County Airport (KUES)

Lat: 43.04°NLon: 88.25°WElev: 886ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

Lannon WI

Overnight
Low: 60 °F
Partly Cloudy
Saturday
High: 83 °F
Partly Sunny
Saturday Night
Low: 69 °F
Partly Cloudy
Sunday
High: 91 °F
Partly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 72 °F
Chance
T-storms then
Showers
Likely
Monday
High: 90 °F
Chance
Showers then
Chance
T-storms
Monday Night
Low: 67 °F
Slight Chance
T-storms
Tuesday
High: 84 °F
Mostly Sunny
Tuesday Night
Low: 62 °F
Mostly Clear

Detailed Forecast

Overnight

Partly cloudy, with a low around 60. Southwest wind around 5 mph.

Saturday

Partly sunny, with a high near 83. Southwest wind 5 to 10 mph.

Saturday Night

Partly cloudy, with a low around 69. Southwest wind around 5 mph.

Sunday

A 10 percent chance of showers and thunderstorms after 5pm. Partly sunny and hot, with a high near 91. Heat index values as high as 99. Light west wind becoming southwest 5 to 10 mph in the afternoon.

Sunday Night

A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 72. Southeast wind around 5 mph becoming southwest after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday

A chance of showers, with thunderstorms also possible after 7am. Mostly sunny and hot, with a high near 90. Southwest wind 5 to 15 mph. Chance of precipitation is 40%.

Monday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. Southeast wind 5 to 10 mph becoming northwest in the evening.

Tuesday

Mostly sunny, with a high near 84. North wind 5 to 10 mph.

Tuesday Night

Mostly clear, with a low around 62.

Wednesday

Sunny, with a high near 84.

Wednesday Night

A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 63.

Thursday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.

Thursday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.