Today's Weather - Sunday, July 5, 2026
BOCA RATON, FL — Expect a hot, mostly sunny Sunday with a high near 91 and heat index values up to around 105. A few showers and thunderstorms may pop up after mid-afternoon, but the best storm coverage should shift inland as the sea breeze moves west. Early this morning, some neighborhoods may still notice reduced visibility or a smoky smell from Independence Day fireworks, improving as the morning goes on. Tonight stays warm and muggy near 80 with a lingering chance of an early-evening storm
South Florida remains under the influence of strong high pressure over the Atlantic, and that’s the main reason today looks like a classic midsummer setup: lots of sun early, building heat, and then scattered storms driven by the daily sea-breeze pattern. The National Weather Service notes that smoke from Independence Day fireworks has lowered visibility and air quality this morning.
That should steadily improve over the next few hours as mixing increases and a light onshore breeze develops. If you’re heading out early for a walk or run, expect the air to feel a bit hazy in spots at first.
By late morning into the afternoon, winds that start light and variable will turn more southeasterly along the east coast as the Atlantic sea breeze kicks in. That sea breeze tends to push the day’s storm focus away from the immediate coast and toward interior areas.
For Boca Raton, that means the afternoon may stay mostly dry more often than not, but a brief shower or thunderstorm is still possible after about 2 PM. Heat is the bigger, more reliable impact.
For the Boca Raton and Deerfield Beach coastal waters, winds stay on the lighter side today—generally south 5 to 10 knots, turning more southeast later as the sea breeze develops. Seas remain low, at 2 feet or less, with light chop in the Intracoastal.
A slight chance of showers or a thunderstorm exists, and any storm can briefly kick up higher winds and rougher seas, even if conditions are calm beforehand. Looking ahead, southeast winds may increase to a moderate breeze midweek, which can add more chop nearshore.
Beachgoers should also be ready for hot sand, strong sun, and quick-moving lightning storms later in the day.
Current Advisories / Watches / Warnings
- much of the area could remain below the formal Heat Advisory
- a short-fused Heat Advisory becomes necessary if the forecast trends
- values flirting with Heat Advisory criteria again.
7 Day Outlook
- Sunday (July 5): Mostly sunny and very hot, high near 91 with heat index up to about 105. A few afternoon storms possible, with the better storm focus inland. Warm night near 80.
- Monday: Heat stays intense with highs around 90 and heat index near 105. Showers and thunderstorms become more likely late day and evening (around a 60% chance). Brief downpours and lightning possible.
- Tuesday: Still hot and humid, high near 91. Storm chances ease slightly (around 50%), mainly after mid-afternoon. Expect a mix of sun and clouds, with a warm, sticky night near 81.
- Wednesday: Mostly sunny with a continued summer heat feel, high near 91. A few afternoon storms remain possible (around 40%), but coverage may be more limited than early week. Evening storms fade quickly.
- Thursday: Trending drier and sunnier, with highs near 92 and fewer storm interruptions. Heat continues to build, and the afternoon will feel especially harsh in full sun. Overnight lows stay near 82.
- Friday: Mostly sunny and hot again, high near 92. A low-end storm chance returns (around 30%), mainly later in the day. Any storm that forms could still bring lightning and a quick heavy downpour.
- Saturday: Hot with increasing storm chances (around 50%). Expect sun early, then more afternoon and early-evening thunderstorms. Plan outdoor events for the morning and keep a backup plan for rain and lightning.
Get the latest Boca Raton Weather outlook for Sunday, July 5, 2026, including heat index concerns, afternoon thunderstorm chances, and a marine update for the nearshore Atlantic waters.
