Hour-by-Hour Until 'Feels Like' 99 Degrees Monday

Daytime temperatures will stay in the 90s all week, but the real threat is the heat index, or "feels like" temperature.

The heat index is expected to reach at or near 100 degrees every day this week.

The worst heat Monday should be at 3 p.m., with temperatures feeling like 99 degrees, according to the National Weather Service.

Isolated thunderstorms are likely Monday afternoon and evening.

The main weather hazards will be frequent lightning, with locally heavy rain and minor urban flooding possible with any thunderstorms, according to a weather service statement.

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Here's the hour-by-hour timeline for the "feels like" temperatures Monday:

11 a.m.: 94 degrees

Noon: 97 degrees

1 p.m.: 98 degrees

3 p.m.: 99 degrees

4 p.m.: 98 degrees

6 p.m.: 96 degrees

7 p.m.: 93 degrees

8 p.m.: 91 degrees