Weather
South Florida Weather Alert: 90% Heavy Rain Risk Oct 17-18
Miami, FL – According to the National Weather Service, showers and thunderstorms become increasingly likely Saturday before heavy rainfall and windy conditions arrive Sunday. The forecast centers on M
By Rachel Monroe · 2026-10-15T07:09:09.479Z
Miami, FL – Heavy rain, thunderstorms and increasingly strong winds could disrupt weekend plans across Miami as a wetter weather pattern develops Saturday and intensifies Sunday. After several days of temperatures approaching 90 degrees, the city faces a 90% chance of precipitation Sunday, with some thunderstorms capable of producing heavy rainfall. Northeast winds could gust as high as 30 mph, raising concerns about reduced visibility, difficult driving conditions and interruptions to outdoor activities across the Miami area.
According to the National Weather Service, showers and thunderstorms become increasingly likely Saturday before heavy rainfall and windy conditions arrive Sunday. The forecast centers on Miami in Miami Dade County, part of the greater South Florida metropolitan region, where residents should prepare for a potentially unsettled weekend.
Sunday Brings the Greatest Rain and Wind Concerns Sunday, Oct. 18, stands out as the most significant weather day in the available forecast. The National Weather Service places precipitation chances at 90%, with showers and possible thunderstorms throughout the day. Some storms could produce heavy rainfall, although the forecast does not specify exact accumulation totals.
Winds are also expected to strengthen, with northeast winds around 23 mph and gusts reaching 30 mph. Those conditions could create uncomfortable travel and outdoor recreation conditions, particularly along exposed waterfront areas and major roads.
Sunday's high temperature is expected to reach approximately 83 degrees, noticeably cooler than the 88 degree highs forecast Thursday and Friday. Despite the lower temperatures, humid conditions and frequent showers could keep the day feeling unsettled.
The rain threat continues Sunday night, with an 80% precipitation probability and additional thunderstorms possible. Some storms could again produce heavy rainfall, while northeast winds of 18 to 21 mph may gust as high as 26 mph.
Saturday Storms Set the Stage for a Wet Weekend Before Sunday's heavier rain potential, Saturday brings an increasing chance of showers and thunderstorms. The National Weather Service expects scattered activity between 8 a.m. and 2 p.m., followed by showers and possible thunderstorms during the afternoon.
Saturday's precipitation probability reaches 90%, with temperatures climbing near 87 degrees. South winds of 5 to 8 mph are expected to become northeasterly during the afternoon as the weather pattern changes.
Rain remains likely Saturday night, when precipitation chances reach 80%. Temperatures are forecast to fall near 77 degrees, with northeast winds of 9 to 17 mph and breezy conditions developing.
For drivers using Interstate 95, Interstate 395 and the Dolphin Expressway, periods of heavier rainfall could reduce visibility and create standing water in poorly drained locations. The supplied forecast does not establish specific road closures, flooding warnings or confirmed travel disruptions.
Residents planning beach visits, boating trips or outdoor events should pay particular attention to updated forecasts as Sunday approaches. Stronger winds and thunderstorms could make exposed coastal locations less comfortable and require changes to recreational plans.
Unsettled Conditions Continue Into Next Week The approaching weekend storms follow a warm start to the forecast period. Thursday and Friday both feature highs near 88 degrees, with heat index values potentially reaching 101 degrees during the afternoon.
Friday brings a 30% chance of showers and thunderstorms, mainly between 2 and 3 p.m., before the much higher weekend precipitation probabilities arrive.
Monday remains unsettled, with a 70% chance of showers and possible thunderstorms. Windy conditions continue as temperatures reach approximately 84 degrees, while Monday night's rain probability remains elevated at 60%.
Tuesday and Wednesday bring somewhat lower rain chances, although scattered showers and thunderstorms remain possible. Temperatures are expected to stay in the middle 80s, with breezy conditions continuing.
The National Weather Service forecast identifies heavy rainfall and gusty winds but does not establish a tropical storm, hurricane or official flood warning for Miami in the supplied information.
Will the weekend's heavy rain and windy conditions change your plans around Miami?
Five Day Weather Outlook Thursday 10/15: Mostly sunny skies are expected with a high near 88 degrees and heat index values reaching 101 degrees, while a 20% chance of showers or thunderstorms continues before evening and nighttime temperatures fall near 82 degrees.
Friday 10/16: Mostly sunny conditions continue with a high near 88 degrees and a heat index potentially reaching 101 degrees, accompanied by a 30% afternoon thunderstorm chance before temperatures fall near 80 degrees Friday night.
Saturday 10/17: Showers and possible thunderstorms become increasingly likely, with a 90% precipitation chance and a high near 87 degrees, followed by breezy conditions, an 80% rain chance and a nighttime low around 77 degrees.
Sunday 10/18: Heavy rainfall and possible thunderstorms accompany a 90% precipitation chance, with northeast winds around 23 mph gusting to 30 mph and a high near 83 degrees, followed by additional rain and a low near 75 degrees.
Monday 10/19: Windy conditions and a 70% chance of showers and possible thunderstorms continue with a high near 84 degrees, while Monday night remains unsettled with a 60% precipitation chance and temperatures falling near 75 degrees.
Extended Weather Outlook: Oct. 20 21 Tuesday, Oct. 20, brings mostly sunny skies with a high near 84 degrees, although a 50% chance of showers and thunderstorms remains in the forecast. Windy conditions continue during the day.
Tuesday night turns partly cloudy, with a 40% chance of showers and thunderstorms and temperatures falling near 75 degrees. Breezy conditions are expected.
Wednesday, Oct. 21, remains unsettled, with a 50% chance of showers and thunderstorms, partly sunny skies and a high near 85 degrees. Breezy conditions continue.