10-Day Weather Forecast - Port Saint John, FL

Partly sunny. A slight chance of showers and thunderstorms late in the morning then a chance of showers and thunderstorms late in the afternoon and towards sunset. Highs in the mid 90s. South winds around 5 mph becoming southeast 5 to 10 mph late in the afternoon and towards sunset. Chance of rain 30 percent. Heat index values up to 107.

Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph.

Mostly sunny. Hot. Highs in the mid 90s. South winds 5 to 10 mph becoming southeast 10 to 15 mph late in the afternoon and towards sunset. Heat index values up to 107.

Mostly clear. Lows in the upper 70s. South winds 10 to 15 mph decreasing to around 5 mph after midnight.

Partly sunny. Hot. Highs in the mid 90s.

Mostly clear. Lows in the upper 70s.

Sunny late in the morning then partly sunny with a chance of showers and thunderstorms late in the afternoon and towards sunset. Highs in the mid 90s. Chance of rain 40 percent.

Mostly clear. Lows in the upper 70s.

Sunny late in the morning then partly sunny with a chance of showers and thunderstorms late in the afternoon and towards sunset. Hot. Highs in the mid 90s. Chance of rain 40 percent.

Partly cloudy. A chance of showers and a slight chance of thunderstorms in the late evening and early morning. Lows in the upper 70s. Chance of rain 30 percent.

Partly sunny. A chance of showers and thunderstorms late in the afternoon and towards sunset. Hot. Highs in the mid 90s. Chance of rain 50 percent.

Partly cloudy. A slight chance of showers and thunderstorms in the late evening and early morning. Lows in the upper 70s. Chance of rain 20 percent.

Partly sunny. A slight chance of showers and thunderstorms late in the morning then a chance of showers and thunderstorms late in the afternoon and towards sunset. Highs in the lower 90s. Chance of rain 50 percent.

Partly cloudy with a 75% chance for rain and thunderstorms. Low temperature around 75F. Dew point will be around 74F with an average humidity of 87%. Winds will be 4 mph from the S.

Partly cloudy with a 60% chance for rain and thunderstorms. High temperature around 91F. Dew point will be around 76F with an average humidity of 75%. Winds will be 5 mph from the S.

Partly cloudy with a 65% chance for rain and thunderstorms. Low temperature around 76F. Dew point will be around 74F with an average humidity of 85%. Winds will be 5 mph from the S.

Mostly sunny with scattered thunderstorms. Chance of storms 45%. High temperature around 92F. Dew point will be around 76F with an average humidity of 73%. Winds will be 5 mph from the S.

Mostly clear with a 50% chance for rain and thunderstorms. Low temperature around 76F. Dew point will be around 74F with an average humidity of 85%. Winds will be 6 mph from the SE.