Today's Weather - Monday, May 11, 2026
BOCA RATON, FL (Boca Post) (Copyright © 2026) — Boca Raton will run hot and humid today with a high near 88 and a heat index pushing around 100 during the afternoon. Most of the day is partly sunny, with only a low chance of a shower or thunderstorm late in the day. Tonight turns mostly cloudy with a better chance of evening storms before things quiet down later, and lows near 78. Tuesday looks noticeably wetter, with showers and thunderstorms becoming more likely by afternoon and continuing into Tuesday night
South Florida is sitting in a “one more day of heat” setup today, and Boca Raton will feel it. The National Weather Service notes high pressure is still the main player locally, keeping winds fairly light while pulling in humid air from the south.
That humidity is the big story: with plenty of moisture in place, it won’t take much afternoon heating for storms to pop up. For Boca, today’s forecast keeps rain chances low for most of the day, then brings a small chance of showers and thunderstorms after 5 p.m.
Even if storms are isolated, any that develop can bring a quick downpour, lightning, and a burst of gusty wind. The forecast discussion also flags that a few storms could briefly push strong wind gusts, with the better odds closer to interior areas and toward the Palm Beach County coast later in the day.
Heat impacts are more widespread than the rain today. Afternoon “feels-like” temperatures around 100 are expected across much of the region, so plan extra water and breaks if you’re outside.
Boaters and beachgoers should expect generally manageable conditions outside of storms, but keep an eye on the sky each afternoon. For the Boca Raton coastal waters (Jupiter Inlet to Deerfield Beach), south winds run about 10–15 knots today with seas around 2 feet, then winds ease tonight.
Tuesday brings lighter winds that turn easterly, with seas staying under 2 feet, but showers and thunderstorms become more common. By Wednesday, easterly flow increases and seas build to 3–5 feet offshore (occasionally higher), especially later in the day.
Thunderstorms can create sudden hazardous gusts, rougher seas, and frequent lightning near the coast and in the Intracoastal.
Current Advisories / Watches / Warnings
- .MFL WATCHES/WARNINGS/ADVISORIES...
7 Day Outlook
- Monday (May 11): Partly sunny and hot, high near 88. Heat index around 100 in the afternoon. Only a small late-day storm chance; any storm could bring lightning and a quick downpour.
- Monday Night: Mostly cloudy with a 40% chance of showers and thunderstorms, mainly during the evening. Warm and muggy with lows near 78. Brief heavy rain and lightning possible.
- Tuesday: Turning wetter. Mostly cloudy with showers and thunderstorms becoming likely after mid-afternoon; around a 60% chance. High near 86. Watch for heavy bursts of rain and ponding on roads.
- Tuesday Night: Active evening and overnight pattern with showers and thunderstorms likely, then lingering showers late; around a 70% chance. Low near 78. Localized street flooding is possible in heavier cells.
- Wednesday: Unsettled with a 70% chance of showers and thunderstorms, especially afternoon and early evening. High near 84. Periods of sun between storms, but plan for lightning and downpours.
- Thursday: Some improvement but still not fully dry. Mostly sunny overall with a 30% chance of afternoon storms. High near 86. A brief shower or thunderstorm remains possible later in the day.
- Friday: Drier and brighter. Sunny with a high near 86 and lighter winds. A good day for outdoor plans, though humidity remains typical for May in Boca Raton.
Get the latest Boca Raton Weather update for heat, thunderstorm chances, and beach conditions through the week.
