SWFL.io - Local NewsMeteorologist: Oceana Hayden
•6/20/2026
It's another steamy afternoon across Southwest Florida, with temperatures climbing into the low and mid-90s and heat index values soaring well into the triple digits. A Heat Advisory remains in effect for Collier County until 6 p.m., and residents are urged to stay hydrated and limit outdoor activities during the hottest part of the day.
Storms are beginning to develop along the Gulf Coast and near the I-75 corridor. If thunder roars, go indoors! As the sea breeze pushes inland, scattered thunderstorms will gradually shift eastward, potentially bringing those periods of heavy rain and frequent lightning to Hendry County and near Lake Okeechobee.
If you're spending time outdoors, especially at area beaches, keep a close eye on the sky and have a plan to move indoors quickly if thunderstorms approach. Lightning can strike miles away from a storm and remains the primary threat this afternoon.
Most storm activity should diminish around sunset, with drier conditions returning for the evening hours.
Sunday starts warm and slightly less humid, with a mix of sun and clouds through the morning. Rain chances remain low early in the day, making for favorable conditions if you're planning a Father's Day brunch, round of golf, or backyard barbecue.
By mid-to-late afternoon, isolated thunderstorms are expected to develop, mainly across inland communities. While coverage will be lower than Saturday, a few storms could still produce brief downpours and lightning.
Temperatures will once again reach the lower 90s, while heat index values climb into the triple digits. Anyone spending extended time outdoors should continue practicing heat safety.
A strong area of high pressure will remain in control through much of next week, keeping Southwest Florida hot with only limited daily rain chances. Most locations will see rain probabilities remain below 40 percent, while temperatures steadily climb.
By the middle of the week, some inland communities could approach the upper 90s, with heat indices well above 100 degrees during the afternoon hours.
The tropics remain quiet. No tropical development is expected over the next seven days, and there are currently no areas being monitored for formation.