Port Saint John, Florida 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 80°F 27°C Heat Index: 85°F	Observed at: Port Saint John, FL	Elevation: 20 ft | 6 m
	Last Updated: July 27, 9:15 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 80°F | 27°C
	Pressure: 29.82 in | 1009.8 mb	Dewpoint: 76°F | 24°C
	Humidity: 88%	Wind: WSW 4 mph | WSW 6 kph
	Feels Like: 89°F | 32°C	Visibility: 31.8 mi | 51.2 km
	Lat/Long: 28.4711 | -80.7887	Sunrise: 6:42 AM   Sunset: 8:17 PM

7 Day Graphical Forecast

Valid: 6:33 AM 7/29/2026

Tonight Overcast 75 °F 41% Chance Precipitation Tuesday Heavy Rain 91 |76 °F 24% Chance Precipitation Wednesday Overcast 95 |76 °F 14% Chance Precipitation Thursday Thunderstorm 88 |78 °F 72% Chance Precipitation Friday Light Showers 94 |74 °F 68% Chance Precipitation Saturday Light Showers 94 |74 °F 65% Chance Precipitation Sunday Drizzle 95 |75 °F 45% Chance Precipitation

7 Hour Graphical Forecast

Valid: 6:33 AM 7/29/2026

6 AM Clear 76 °F 1% Chance Precipitation

7 AM Clear 76 °F 1% Chance Precipitation

8 AM Mostly Clear 78 °F 1% Chance Precipitation

9 AM Overcast 81 °F 4% Chance Precipitation

10 AM Overcast 84 °F 4% Chance Precipitation

11 AM Overcast 86 °F 4% Chance Precipitation

12 PM Mostly Clear 89 °F 4% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Port Saint John, FL - (Fahrenheit & Celsius) Valid: 6:33 AM 7/29/2026 Tonight Overcast with a low around 75°F [24°C]. WSW wind to around 12 mph [19 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 41% with QPF of 0.00 in [0.0 mm]. Tuesday Heavy Rain with a high near 91°F [33°C]. SW wind to around 19 mph [30 kph], with gusts to near 25 mph [41 kph]. Dewpoint near 76°F [24°C] with humidity of 94%. Pressure around 29.82 in [1009.8 mb]. UV Index: 8.3. Chance of precipitation 24% with QPF of 1.28 in [32.4 mm]. Tuesday Night Heavy Rain with a low around 76°F [24°C]. SW wind to around 19 mph [30 kph], with gusts to near 25 mph [41 kph]. Chance of precipitation 24% with QPF of 1.28 in [32.4 mm]. Wednesday Overcast with a high near 95°F [35°C]. SW wind to around 14 mph [22 kph], with gusts to near 24 mph [38 kph]. Dewpoint near 76°F [24°C] with humidity of 91%. Pressure around 29.82 in [1009.8 mb]. UV Index: 8.45. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 76°F [24°C]. SW wind to around 14 mph [22 kph], with gusts to near 24 mph [38 kph]. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Thursday Thunderstorm with a high near 88°F [31°C]. WSW wind to around 13 mph [21 kph], with gusts to near 25 mph [41 kph]. Dewpoint near 76°F [24°C] with humidity of 91%. Pressure around 29.82 in [1009.8 mb]. UV Index: 5.55. Chance of precipitation 72% with QPF of 0.15 in [3.9 mm]. Thursday Night Thunderstorm with a low around 78°F [25°C]. WSW wind to around 13 mph [21 kph], with gusts to near 25 mph [41 kph]. Chance of precipitation 72% with QPF of 0.15 in [3.9 mm]. Friday Light Showers with a high near 94°F [34°C]. WSW wind to around 13 mph [21 kph], with gusts to near 23 mph [37 kph]. Dewpoint near 76°F [24°C] with humidity of 98%. Pressure around 29.82 in [1009.8 mb]. UV Index: 7.45. Chance of precipitation 68% with QPF of 0.13 in [3.2 mm]. Friday Night Light Showers with a low around 74°F [23°C]. WSW wind to around 13 mph [21 kph], with gusts to near 23 mph [37 kph]. Chance of precipitation 68% with QPF of 0.13 in [3.2 mm]. Saturday Light Showers with a high near 94°F [35°C]. SW wind to around 14 mph [22 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 76°F [24°C] with humidity of 96%. Pressure around 29.82 in [1009.8 mb]. UV Index: 8.5. Chance of precipitation 65% with QPF of 0.26 in [6.6 mm]. Saturday Night Light Showers with a low around 74°F [23°C]. SW wind to around 14 mph [22 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 65% with QPF of 0.26 in [6.6 mm]. Sunday Drizzle with a high near 95°F [35°C]. SSW wind to around 11 mph [18 kph], with gusts to near 16 mph [25 kph]. Dewpoint near 76°F [24°C] with humidity of 90%. Pressure around 29.82 in [1009.8 mb]. UV Index: 8.4. Chance of precipitation 45% with QPF of 0.11 in [2.7 mm]. Sunday Night Drizzle with a low around 75°F [24°C]. SSW wind to around 11 mph [18 kph], with gusts to near 16 mph [25 kph]. Chance of precipitation 45% with QPF of 0.11 in [2.7 mm].

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7 Day and Night - QPF Forecast for Port Saint John, FL

Tonight: 0.0 mm | 0.00 in

Tuesday: 32.4 mm | 1.28 in

Tuesday Night: 32.4 mm | 1.28 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

Thursday: 3.9 mm | 0.15 in

Thursday Night: 3.9 mm | 0.15 in

Friday: 3.2 mm | 0.13 in

Friday Night: 3.2 mm | 0.13 in

Saturday: 6.6 mm | 0.26 in

Saturday Night: 6.6 mm | 0.26 in

Sunday: 2.7 mm | 0.11 in

Sunday Night: 2.7 mm | 0.11 in

7 Day and Night - Maximum Wind Speed Forecast for Port Saint John, FL

Tonight: WSW @ 19 kph | 12 mph

Tuesday: SW @ 30 kph | 19 mph

Tuesday Night: SW @ 30 kph | 19 mph

Wednesday: SW @ 22 kph | 14 mph

Wednesday Night: SW @ 22 kph | 14 mph

Thursday: WSW @ 21 kph | 13 mph

Thursday Night: WSW @ 21 kph | 13 mph

Friday: WSW @ 21 kph | 13 mph

Friday Night: WSW @ 21 kph | 13 mph

Saturday: SW @ 22 kph | 14 mph

Saturday Night: SW @ 22 kph | 14 mph

Sunday: SSW @ 18 kph | 11 mph

Sunday Night: SSW @ 18 kph | 11 mph

7 Day and Night - Maximum Humidity Forecast for Port Saint John, FL

Tonight: 95 %

Tuesday: 94 %

Tuesday Night: 94 %

Wednesday: 91 %

Wednesday Night: 91 %

Thursday: 91 %

Thursday Night: 91 %

Friday: 98 %

Friday Night: 98 %

Saturday: 96 %

Saturday Night: 96 %

Sunday: 90 %

Sunday Night: 90 %

7 Day and Night - Snowfall Totals Forecast for Port Saint John, FL

Tonight: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

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