Port Saint John, FL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Port Saint John, FL in one place.
Sunny, with a high near 96. Heat index values as high as 109. South wind 0 to 10 mph.
Local Weather Overview
This forecast page for Port Saint John, FL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 8, 2026 3:17 PM EDT.
The active forecast window currently covers Jul 9 to Jul 14, 2026 for Port Saint John, FL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 9 to Jul 14, 2026
- Latest sync
- Jul 8, 2026 3:17 PM EDT
- Forecast office
- MLB
- Source
- NOAA / NWS
Daily Outlook
This Week in Port Saint John
Sunday looks like the warmest upcoming period in Port Saint John at 97 degrees F.
Monday Night is the coolest period ahead with temperatures near 76 degrees F.
The strongest winds are forecast for Thursday at about 0 to 10 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 8, 2026 3:17 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- MLB
- Radar station
- KMLB
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 77. Heat index values as high as 105. South southeast wind 5 to 10 mph.
Sunny, with a high near 96. South southeast wind 0 to 10 mph.
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. South wind 0 to 10 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 77. South wind 0 to 10 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 97. South southwest wind 0 to 5 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 77. South southwest wind 0 to 5 mph. Chance of precipitation is 50%.
Showers and thunderstorms likely after 8am. Mostly sunny, with a high near 95. Southwest wind 0 to 10 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 2am. Partly cloudy, with a low around 76. South southwest wind around 5 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely after 8am. Mostly sunny, with a high near 93. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 2am. Partly cloudy, with a low around 76. South wind 0 to 5 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 9
|
Sunny
|
96°F |
0 to 10 mph
S
|
|
Thursday Night
Jul 9
|
Mostly Clear
|
77°F |
5 to 10 mph
SSE
|
|
Friday
Jul 10
|
Sunny
|
96°F |
0 to 10 mph
SSE
|
|
Friday Night
Jul 10
|
Mostly Clear
|
78°F |
5 to 10 mph
SSE
|
|
Saturday
Jul 11
|
Sunny then Chance Showers And Thunderstorms
|
96°F |
0 to 10 mph
S
|
|
Saturday Night
Jul 11
|
Chance Showers And Thunderstorms
|
77°F |
0 to 10 mph
S
|
|
Sunday
Jul 12
|
Mostly Sunny then Chance Showers And Thunderstorms
|
97°F |
0 to 5 mph
SSW
|
|
Sunday Night
Jul 12
|
Chance Showers And Thunderstorms
|
77°F |
0 to 5 mph
SSW
|
|
Monday
Jul 13
|
Showers And Thunderstorms Likely
|
95°F |
0 to 10 mph
SW
|
|
Monday Night
Jul 13
|
Showers And Thunderstorms Likely
|
76°F |
5 mph
SSW
|
|
Tuesday
Jul 14
|
Showers And Thunderstorms Likely
|
93°F |
5 to 10 mph
SW
|
|
Tuesday Night
Jul 14
|
Showers And Thunderstorms Likely
|
76°F |
0 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Port Saint John.
