Weather in Key Biscayne, FL
Key Biscayne, Sunday, 11 October, 10:16
Clear. Feels like 100°. High 90°, low 79°.
Monthly outlook for Key Biscayne, FL: average high 82.9°, average low 76°. That is 0.7° above the climate normal for October. Precipitation is expected on 11 days (about 2.4 inches), against a normal of 8 days and 2.3 inches. The warmest day looks like 12 October (91.5°), the coolest 25 October (70.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 84.2° | 82° | +1.2° |
| 21 October – 30 October | 80.8° | 80.9° | -0.1° |
| 31 October – 9 November | at normal | 79.5° | — |
October records over 66 years
0.03
Key Biscayne, Monday, 12 October
Light rain. High 91°, low 78°.
0Key Biscayne, Tuesday, 13 October
Clear. High 88°, low 74°.
0.08Key Biscayne, Wednesday, 14 October
Light rain. High 86°, low 78°.
0.19Key Biscayne, Thursday, 15 October
Light rain. High 86°, low 78°.
0.21Key Biscayne, Friday, 16 October
Light rain. High 85°, low 77°.
0.88Key Biscayne, Saturday, 17 October
Rain. High 80°, low 74°.
0.41Key Biscayne, Sunday, 18 October
Rain. High 76°, low 74°.
0.13Key Biscayne, Monday, 19 October
Light rain. High 78°, low 76°.
0.07Key Biscayne, Tuesday, 20 October
Light rain. High 81°, low 78°.
0.06Key Biscayne, Wednesday, 21 October
Light rain. High 82°, low 79°.
0.21Key Biscayne, Thursday, 22 October
Light rain. High 82°, low 78°.
0.03Key Biscayne, Friday, 23 October
Light rain. High 81°, low 75°.
0.04Key Biscayne, Saturday, 24 October
Light rain. High 80°, low 74°.
0Key Biscayne, Sunday, 25 October
Clear. High 80°, low 71°.
0Key Biscayne, Monday, 26 October
Light rain. High 79°, low 74°.
0.04
Key Biscayne, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.12
Key Biscayne, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.09Key Biscayne, Thursday, 29 October
Climate normal for this date — 60-year average.
0.1Key Biscayne, Friday, 30 October
Climate normal for this date — 60-year average.
0.1Key Biscayne, Saturday, 31 October
Climate normal for this date — 60-year average.
0.1Key Biscayne, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Key Biscayne, Monday, 2 November
Climate normal for this date — 60-year average.
0.14Key Biscayne, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.13Key Biscayne, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.16Key Biscayne, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Key Biscayne, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Key Biscayne, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11Key Biscayne, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Key Biscayne, Monday, 9 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 Key Biscayne, 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 Key Biscayne, 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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