Heat and humidity to continue for the holiday week

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

Temperatures Sunday afternoon should be similar to what central Indiana experienced Saturday afternoon.  Expect high temperatures in the low 90°s.

Forecast high temperature Sunday

One difference from Saturday, winds will be a bit more brisk at times, gusting to near 20 mph out of the south.

The southerly winds will help keep low-level moisture in place.  Dew point temperatures - the measure of the moisture in the air - will remain in the low to mid 70°s throughout the day.  This will take heat indices in to the upper 90°s.  A few locations in northern Indiana and near the Indiana/Illinois state line may cross in to the lower 100°s.

Forecast peak heat index for Indianapolis

Peak heat indices will remain in the upper 90°s to near 100° for the next several days.  There will be a "slight" drop in the heat index Monday, but it will still feel like it is in the middle 90°s.

An approaching cold front will try to send a few showers and thunderstorms to central Indiana Sunday night.  As is typically the case, as we get closer to the "event" computer models start to back off on the coverage of rainfall and how much moisture will fall.  On average, computer models suggest around 0.15" of rain could fall through Monday morning.

Computer model projection of radar and satellite imagery.

The best chance for rain will come late Sunday night through early Monday morning.

There will be another chance for afternoon showers and thunderstorms Monday and Tuesday.  However, they will be hit and miss and most locations will remain dry.  Computer models only suggest there is about a 20% probability of rain falling so don't stop watering your lawn/plants due to the prospects of rain.

Temperatures spike for the 4th of July as a strengthening area of high pressure in the upper-levels of the atmosphere builds in overhead.  We also call the upper-level high a "hot dome".  The hot dome will be overhead for a couple days.  This should take temperatures in to the lower/middle 90°s and send the heat index back to the upper 90°s to lower 100°s.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Notice: you are using an outdated browser. Microsoft does not recommend using IE as your default browser. Some features on this website, like video and images, might not work properly. For the best experience, please upgrade your browser.