Weather in Key Biscayne, FL
Key Biscayne, Saturday, 8 August, 20:22
Light rain. Feels like 97°. High 92°, low 80°.
Monthly outlook for Key Biscayne, FL: average high 87.3°, average low 83.6°. That is 0.6° above the climate normal for August. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 12 days and 2.7 inches. The warmest day looks like 8 August (92.2°), the coolest 8 August (79.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 87.6° | 86.2° | +0.8° |
| 18 August – 27 August | 86.7° | 85.9° | +0.4° |
| 28 August – 6 September | at normal | 85.2° | — |
August records over 66 years
0.02Key Biscayne, Sunday, 9 August
Light rain. High 88°, low 82°.
0Key Biscayne, Monday, 10 August
Light rain. High 87°, low 84°.
0.02Key Biscayne, Tuesday, 11 August
Light rain. High 87°, low 84°.
0.08Key Biscayne, Wednesday, 12 August
Light rain. High 87°, low 84°.
0
Key Biscayne, Thursday, 13 August
Partly cloudy. High 87°, low 85°.
0.01Key Biscayne, Friday, 14 August
Light rain. High 88°, low 84°.
0.16Key Biscayne, Saturday, 15 August
Light rain. High 87°, low 85°.
0
Key Biscayne, Sunday, 16 August
Overcast. High 87°, low 84°.
0.02Key Biscayne, Monday, 17 August
Light rain. High 87°, low 84°.
0.02Key Biscayne, Tuesday, 18 August
Light rain. High 86°, low 84°.
0.02Key Biscayne, Wednesday, 19 August
Light rain. High 86°, low 84°.
0.17Key Biscayne, Thursday, 20 August
Light rain. High 86°, low 83°.
0.14Key Biscayne, Friday, 21 August
Light rain. High 87°, low 83°.
0.18Key Biscayne, Saturday, 22 August
Rain. High 87°, low 84°.
0.01Key Biscayne, Sunday, 23 August
Light rain. High 87°, low 83°.
0.23Key Biscayne, Monday, 24 August
Climate normal for this date — 60-year average.
0.27Key Biscayne, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.25Key Biscayne, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.17Key Biscayne, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Key Biscayne, Friday, 28 August
Climate normal for this date — 60-year average.
0.19Key Biscayne, Saturday, 29 August
Climate normal for this date — 60-year average.
0.22Key Biscayne, Sunday, 30 August
Climate normal for this date — 60-year average.
0.2Key Biscayne, Monday, 31 August
Climate normal for this date — 60-year average.
0.16Key Biscayne, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.2Key Biscayne, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.24Key Biscayne, Thursday, 3 September
Climate normal for this date — 60-year average.
0.16Key Biscayne, Friday, 4 September
Climate normal for this date — 60-year average.
0.22Key Biscayne, Saturday, 5 September
Climate normal for this date — 60-year average.
0.22Key Biscayne, Sunday, 6 September
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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