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As of 06:56 EDT

Weather in Port St. John, FL

79°Current weather

Port St. John, Sunday, 9 August, 06:56

Overcast. Feels like 81°. High 91°, low 78°.

Pressure30.09 inHg
Wind3 mph SE
Humidity94%
Visibility6.2 mi
Dew point76°

10-day forecast for Port St. John, FL: 75° to 101°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.

100°
Best day: Thursday, August 13
93° · 0.51 in
Worst day: Tuesday, August 18

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1092° / 76°0.01Light rain
MorningOvercast78°feels 80°
AfternoonOvercast88°feels 89°
EveningOvercast85°feels 95°
OvernightLight rain79°feels 81°
92 °Light rain

Port St. John, Monday, 10 August

Light rain. High 92°, low 76°.

Pressure30.15 inHg
Wind5.4 mph S
Humidity51%
Visibility6.2 mi
Dew point72°
Tue, 1198° / 76°0Mostly clear
MorningClear79°feels 79°
AfternoonPartly cloudy97°feels 104°
EveningOvercast83°feels 89°
OvernightClear78°feels 80°
98 °Mostly clear

Port St. John, Tuesday, 11 August

Mostly clear. High 98°, low 76°.

Pressure30.12 inHg
Wind0.9 mph W
Humidity44%
Visibility6.2 mi
Dew point72°
Wed, 12101° / 76°0.09Rain
MorningRain78°feels 79°
AfternoonClear101°feels 105°
EveningOvercast86°feels 93°
OvernightPartly cloudy80°feels 80°
101 °Rain

Port St. John, Wednesday, 12 August

Rain. High 101°, low 76°.

Pressure30.03 inHg
Wind5.1 mph W
Humidity38%
Visibility6.2 mi
Dew point68°
Thu, 13100° / 78°0Clear
MorningClear86°feels 90°
AfternoonClear97°feels 101°
EveningClear85°feels 92°
OvernightOvercast80°feels 80°
100 °Clear

Port St. John, Thursday, 13 August

Clear. High 100°, low 78°.

Pressure30.03 inHg
Wind10.5 mph SW
Humidity33%
Visibility—
Dew point63°
Fri, 1499° / 78°0.01Light rain
MorningLight rain85°feels 87°
AfternoonLight rain96°feels 102°
EveningLight rain82°feels 87°
OvernightLight rain80°feels 83°
99 °Light rain

Port St. John, Friday, 14 August

Light rain. High 99°, low 78°.

Pressure30.12 inHg
Wind8 mph SE
Humidity37%
Visibility—
Dew point66°
Sat, 1595° / 77°0Overcast
MorningOvercast84°feels 85°
AfternoonOvercast93°feels 99°
EveningOvercast82°feels 87°
OvernightOvercast79°feels 79°
95 °Overcast

Port St. John, Saturday, 15 August

Overcast. High 95°, low 77°.

Pressure30.15 inHg
Wind8.3 mph SE
Humidity44%
Visibility—
Dew point68°
Sun, 1698° / 77°0.15Light rain
MorningLight rain85°feels 86°
AfternoonLight rain95°feels 99°
EveningLight rain79°feels 79°
OvernightLight rain78°feels 80°
98 °Light rain

Port St. John, Sunday, 16 August

Light rain. High 98°, low 77°.

Pressure30.06 inHg
Wind8.4 mph E
Humidity38%
Visibility—
Dew point65°
Mon, 1794° / 77°0Overcast
MorningOvercast83°feels 85°
AfternoonOvercast92°feels 99°
EveningOvercast81°feels 86°
OvernightOvercast79°feels 79°
94 °Overcast

Port St. John, Monday, 17 August

Overcast. High 94°, low 77°.

Pressure30.03 inHg
Wind9.3 mph E
Humidity48%
Visibility—
Dew point69°
Tue, 1893° / 75°0.51Rain
MorningRain82°feels 85°
AfternoonRain91°feels 98°
EveningRain80°feels 85°
OvernightRain77°feels 79°
93 °Rain

Port St. John, Tuesday, 18 August

Rain. High 93°, low 75°.

Pressure29.94 inHg
Wind6.9 mph SE
Humidity49%
Visibility—
Dew point69°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Port St. John, FL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.