Today's Weather - Tuesday, June 16, 2026
BOCA RATON, FL — Expect a hot, mostly sunny Tuesday with a high near 91 and heat index values up to around 105. A few showers and thunderstorms may pop up late this afternoon and early evening, with the best window after about 5 PM. South winds run 6 to 15 mph with gusts near 20 mph, adding a breezy feel at times. Tonight stays warm and partly cloudy near 79, with any storms ending early
South Florida stays locked in a summer pattern today, and that means two main storylines for Boca Raton: heat and a late-day storm chance. The National Weather Service notes high pressure over the Atlantic is keeping the overall setup steady, while winds a few thousand feet up are coming from the southwest.
At the ground, winds are mainly from the south. That wind combination matters because it tends to hold the Atlantic sea breeze close to the east coast for longer, rather than letting it push far inland early.
When the sea breeze boundary stalls near the metro areas, it can act like a “spark line” for thunderstorms later in the day. For Boca Raton, that supports the forecast of only a 30% chance of storms today, mainly after 5 PM, but any storm that does develop can be briefly intense.
The bigger day-to-day impact is the heat. With highs around 91 and sticky humidity, it will feel closer to 105 during the hottest part of the afternoon.
For boaters and beachgoers near Boca Raton, winds stay generally southerly at 10 to 15 knots today with seas around 2 feet, and light chop on the Intracoastal. Conditions are manageable outside of storms, but scattered thunderstorms are possible late today and again at times this week.
Any storm can quickly create locally higher winds and rougher seas, along with frequent lightning. If you’re on the water late afternoon or early evening, keep a close eye on the sky and have a plan to get to safe harbor quickly.
Current Advisories / Watches / Warnings
- Heat Advisory from noon to 6 PM EDT Tuesday for coastal/metro Miami-Dade and Broward (FLZ072-074-172-173).
7 Day Outlook
- Tuesday (June 16): Mostly sunny and hot near 91. Heat index up to about 105. A 30% chance of late-day thunderstorms after 5 PM; brief heavy rain and lightning possible.
- Wednesday: Sunny and very warm near 91 with heat index near 105. Only a small (10%) late-afternoon storm chance. Southeast breeze develops; most places stay dry, but it won’t feel cooler.
- Thursday: Mostly sunny, high near 91. A 20% chance of afternoon thunderstorms after 2 PM. Warm, humid air keeps heat stress elevated; storms that form may be brief but noisy.
- Friday (Juneteenth): Sunny and hot near 91 with a 20% chance of afternoon storms. Southeast winds can be breezy at times. Timing of any storms will affect how high the heat index climbs.
- Saturday: Turning more unsettled with a 50% chance of afternoon thunderstorms. Still warm near 91. Expect more clouds at times and a better shot at downpours and lightning later in the day.
- Sunday: Another active summer day with a 50% chance of showers and thunderstorms. Mostly sunny between storms, high near 91. Watch for localized heavy rain and brief gusty winds.
- Monday: A 30% chance of storms with otherwise mostly sunny skies and highs near 91. Humidity remains high, so heat index values can still push into the mid to upper 90s or higher.
Get the latest Boca Raton Weather outlook for Tuesday, June 16, 2026, including heat, storm chances, and coastal conditions.
