Make your home page

Blazing heat through midweek

Tuesday evening forecast – August 22, 2023

INDIANAPOLIS (WISH) — We continued our trek of being on the hotter and humid side of things for our Tuesday.

Areas northeast of Indianapolis, we’re not as miserable thanks to a boundary.

Buckle up though as Wednesday and Thursday are expected to be our hottest days of the year with searing heat index values.

Excessive heat warnings will be going into effect 8 a.m. Eastern on Wednesday and last until the end of Thursday. Other areas will remain under heat advisories and excessive heat watches through Thursday.

Tuesday night: We’re in for a mostly clear and mild night with light winds out of the east. Lows look to dip into the low 70s.

Wednesday: The heat really will really turn up. Matter of fact, record high temperatures are possible as highs push into the mid 90s. Indy’s record high for Aug. 23 is 96 from 1936. The muggy meter will remain at a very high level, which will cause it to feel oppressive. Heat index values will be serious with numbers up in the 105-110+ range at times.

Wednesday night will also feature the potential for record warm low temperatures. Indy’s record warm low for Wednesday night is 77 from 1936. We’re forecasting a low of 76.

Thursday: We’re still thinking it’s going to be the hottest day of not only this week, but of this year. Dangerous heat will be present across much of the state as highs launch into the mid 90s, and some areas could go into the upper 90s. Feels-like numbers are expected to be from 105-110+.

Thursday also could have record high temperatures. Indy’s record high for Aug. 24 is 98 from 1936.

Thursday night will feature the second night in a row close to record warm lows. The record warm low for Aug. 24 in Indy is 80 from 1872.

Also of note: the chance for spotty storms Thursday afternoon and evening. This chance will be confined to mainly the northern half of Indiana. If anything develops, there is a low chance for strong and severe storms. Damaging winds would be the primary concern.

8-Day Forecast: Friday will stay hot with highs in the low 90s and a low shot for showers and storms. Then, much nicer weather will arrive just in time for the final full weekend of August. Highs will only manage to get into the upper 70s to low 80s this weekend.