Dangerous Heat and Possible Flooding This Week

Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >

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Last Map Update: Tue, Sep 15, 2026 at 4:56:41 am EDT

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Short Term Forecast

Fairly Average September Weather

Tropical Weather Outlook

Island Chain

Marine Winds

Wave Heights

Temperatures tonight across the keys will be slightly higher than average for this time of year, which will lead into average temperatures during the day on Tuesday. Rain chances sit at around 30% for both tonight and tomorrow, with winds of about 10 mph out of the east-northeast.

A trough of low pressure located well east-southeast of Bermuda continues to produce disorganized showers and thunderstorms. Environmental conditions are forecast to become more conducive for development in a few days, and a tropical depression could form late this week as the system moves slowly west-northwestward over the subtropical Atlantic. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 7 days...medium...40 percent.

TODAY...Partly cloudy with a chance for showers and thunderstorms. Highs near 90. East-Northeast winds 10-15 mph. Chance of showers and thunderstorms around 30 percent.

MARINE WINDS TODAY...Gentle to moderate easterly breezes. Bay/Gulfside 1 ft, Hawk Channel 1-2 ft, FL Straits ~2 ft, SE Gulf ~1 ft. Bay/nearshore waters a light to moderate chop. Chance of showers and thunderstorms.

WAVE HEIGHTS TODAY...Gentle to moderate easterly breezes. Bay/Gulfside 1 ft, Hawk Channel 1-2 ft, FL Straits ~2 ft, SE Gulf ~1 ft. Bay/nearshore waters a light to moderate chop. Chance of showers and thunderstorms.

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Dangerous Heat and Possible Flooding This Week

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