Skim boarders know how to take advantage of a sunny breezy day.

Skim boarders know how to take advantage of a sunny breezy day. (Carline Jean, Sun Sentinel)

Daytime temperatures are starting to heat up, but so are nightime readings, as they're expected to be in the mid to upper 70s for most of this week.

The normal high temp for this time of year is about 84 degrees, the normal low about 68.

South Florida's Tuesday forecast otherwise calls for sunny skies with afternoon highs in the upper 80s. It also should be breezy with gusts up to 20 mph.

Wednesday should see a few more clouds and a small chance of rain.


Photos: Models on the catwalk of Miami Swim Week

Although the Florida Division of Emergency Management warned residents of North Florida to be on guard for severe weather from a storm system - the same one that spawned deadly tornadoes in Arkansas - South Florida can expect little or no impact.

Central Florida's forecast: Mostly sunny and breezy with highs in the low 90s, lows in the low 70s and a 20 percent chance of rain.

Summer preview: From weather expert Jim Lushine:

Not only is the thermometer measuring temperatures way above normal, but so is the hygrometer, the instrument that measures humidity.

Consider it a harbinger of rainy season, which normally begins in late May but may be early this year.

Ocean temperatures also have been above normal. In Lake Worth, the afternoon water temperature was 81 degrees, 3 degrees above average, which for water is a big difference.

At Bear Cut on Virginia Key, it was 85, a full 5 degrees above normal. At least it will be great for Fleet Week visitors who want to go into the surf.