Boca Raton Weather Forecast for Sept. 8: High Heat and Afternoon Thunderstorms Expected

Excessive Heat Index of 107 Degrees Will Accompany Midday Rain Threats in South Florida Boca Raton will experience a hot, humid Tuesday on Sept. 8, with high temperatures reaching 92°F and real-feel heat indexes peaking at 107°F. Residents should prepare for mostly cloudy skies, elevated humidity levels, and a 55% probability of scattered afternoon and evening thunderstorms. Morning Weather: Warm and Humid Conditions Morning conditions in Boca Raton will be dominated by cloud cover and high moisture levels. Temperature: Early temperatures will start near 90°F, though the RealFeel index will reach 106°F by midday due to a 77% relative humidity level and a dew point of 78°F. Early temperatures will start near 90°F, though the RealFeel index will reach 106°F by midday due to a 77% relative humidity level and a dew point of 78°F. Winds: Light winds from the southwest at 7 mph, with potential gusts up to 14 mph. Light winds from the southwest at 7 mph, with potential gusts up to 14 mph. Precipitation: A low 25% chance of rain before noon, with overcast skies maintaining 76% cloud coverage. A low 25% chance of rain before noon, with overcast skies maintaining 76% cloud coverage. Visibility: 10 miles. Afternoon Forecast: Storm Threat and Peak Heat Atmospheric instability will peak during the afternoon, bringing the highest likelihood of severe weather and precipitation across Palm Beach County. High Temperature: Mercury will peak at 92°F, exceeding the historical daily average of 88°F. RealFeel Shade conditions will hold near 100°F. Mercury will peak at 92°F, exceeding the historical daily average of 88°F. RealFeel Shade conditions will hold near 100°F. Thunderstorms: A 55% probability of precipitation and a 39% chance of thunderstorms, bringing approximately 0.05 inches of localized rainfall. A 55% probability of precipitation and a 39% chance of thunderstorms, bringing approximately 0.05 inches of localized rainfall. Wind & UV: Winds will shift to the southeast at 10 mph, with gusts reaching 16 mph. The Max UV Index will register at a High level 7.0. Evening and Overnight Outlook: Lingering Moisture Storm activity will taper off into the late evening, leaving behind warm, damp atmospheric conditions overnight. Evening Conditions: Temperatures will hover around 83°F with an ESE wind at 7 mph. A residual 55% chance of rain lingers into the early evening hours with expected rainfall around 0.04 inches. Temperatures will hover around 83°F with an ESE wind at 7 mph. A residual 55% chance of rain lingers into the early evening hours with expected rainfall around 0.04 inches. Overnight Low: Temperatures will drop to an overnight low of 81°F (RealFeel 90°F) under mostly cloudy skies (76% cloud cover) and relative humidity climbing to 85%. Temperatures will drop to an overnight low of 81°F (RealFeel 90°F) under mostly cloudy skies (76% cloud cover) and relative humidity climbing to 85%. Sun & Moon: Sunrise is scheduled for 7:03 AM and sunset at 7:33 PM, yielding 12 hours and 30 minutes of daylight under a waning crescent moon. Subscribe for Weather Alerts: Stay up-to-date with our weather alert service by subscribing here .