Weather in Port St. John, FL
Port St. John, Saturday, 24 October, 10:01
Partly cloudy. Feels like 75°. High 80°, low 64°.
Monthly outlook for Port St. John, FL: average high 78°, average low 65.7°. That is 0.5° above the climate normal for October. Precipitation is expected on 7 days (about 1.4 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 8 November (82.4°), the coolest 4 November (52.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 24 October – 2 November | 79.6° | 77.7° | +1° |
| 3 November – 12 November | 75.3° | 75.8° | -0.3° |
| 13 November – 22 November | at normal | 74.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Tropical Park (8 mi).
0.46
Port St. John, Sunday, 25 October
Rain. High 80°, low 69°.
0.15Port St. John, Monday, 26 October
Light rain. High 81°, low 69°.
0.01Port St. John, Tuesday, 27 October
Light rain. High 80°, low 71°.
0.2Port St. John, Wednesday, 28 October
Light rain. High 78°, low 72°.
0.07Port St. John, Thursday, 29 October
Light rain. High 80°, low 71°.
0Port St. John, Friday, 30 October
Partly cloudy. High 80°, low 69°.
0.01Port St. John, Saturday, 31 October
Light rain. High 82°, low 65°.
0.03Port St. John, Sunday, 1 November
Light rain. High 77°, low 67°.
0.02Port St. John, Monday, 2 November
Light rain. High 81°, low 64°.
0.27Port St. John, Tuesday, 3 November
Rain. High 66°, low 58°.
0.01Port St. John, Wednesday, 4 November
Light rain. High 69°, low 52°.
0
Port St. John, Thursday, 5 November
Mostly clear. High 76°, low 58°.
0.06Port St. John, Friday, 6 November
Light rain. High 78°, low 66°.
0.01Port St. John, Saturday, 7 November
Light rain. High 80°, low 66°.
0
Port St. John, Sunday, 8 November
Clear. High 82°, low 68°.
0.09Port St. John, Monday, 9 November
Climate normal for this date — 60-year average.
0.08
Port St. John, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.05Port St. John, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Port St. John, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Port St. John, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Port St. John, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Port St. John, Sunday, 15 November
Climate normal for this date — 60-year average.
0.09Port St. John, Monday, 16 November
Climate normal for this date — 60-year average.
0.07Port St. John, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.04Port St. John, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05Port St. John, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Port St. John, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Port St. John, Saturday, 21 November
Climate normal for this date — 60-year average.
0.06Port St. John, Sunday, 22 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Port St. John, FL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Port St. John, FL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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