NWS 7-12-18

Hot and humid weather has come back to south-central Wisconsin, with head indexes possibly reaching triple digits on Friday.

Showers and thunderstorms are also likely this weekend, but there are no watches or warnings at this time from the National Weather Service.

Rain isn't expected Thursday but the heat and humidity will be.

27 Storm Track meteorologist Branden Borremans said skies should be partly to mostly sunny, with the head index in the mid-90s.

Friday could be the hottest day of the week with a high of 90 and heat index values up to 100.

The Weather Service said there's a slight chance for showers and thunderstorms before 7 a.m. and again after 2 p.m. Friday, but the better chance comes at night.

Mid-day showers and storms are likely Saturday, then again late at night. The high should top out at 84.

Sunday should be another hot and humid day with heat index values in the mid-90s, and showers and storms possible.

More rain could fall on Monday with a high of 84, before cooler and drier weather moves in on Tuesday.

Borremans said highs should reach 79 both Tuesday and Wednesday under sunny skies.

More showers and storms are possible next Thursday with the high reaching 85.

Wednesday's high of 85 was 3 degrees above normal and 15 degrees below the record high of 100 for July 11, set in 1936.

The low of 59 was 2 degrees below normal and 13 degrees above the record low of 46 for the date, set in 1968 and tied in 1978.

No rain fell at the airport, keeping the July rainfall total at 0.38 inches, 1.17 inches below normal.

The record rainfall on July 11 was 3.82 inches in 1978.

For the meteorological summer of June through August, Madison has received 6.05 inches of rain, 0.04 inches below normal.

Since Jan. 1, Madison has received 22.89 inches of precipitation (rain and melted snow), 4.97 inches above normal.

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Bill Novak is a general assignment reporter for the Wisconsin State Journal.