Monthly outlook for Key Largo Park, FL: average high 86.1°, average low 83.9°. That is 1.2° above the climate normal for August. Precipitation is expected on 7 days (about 1.9 inches), against a normal of 9 days and 2.2 inches. The warmest day looks like 9 August (91.2°), the coolest 10 August (80.3°).
86.1°/83.9°
Average high / low
+1.2°
Above normal
7 / 9
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.8°
84.1°
+1.5°
19 August – 28 August
85.1°
83.9°
+0.7°
29 August – 7 September
at normal
83.5°
—
August records over 66 years
89.2°11 August 2023All-time high
75°23 August 1996All-time low
Climate normals and records are computed from the nearest reference point — Tavernier (8 mi).
Mon, 1089° / 80°0.03
89 °
Key Largo Park, Monday, 10 August
Light rain. High 89°, low 80°.
Pressure30.12 inHg
Wind12.1 mph E
Humidity72%
Visibility6.2 mi
Dew point76°
Tue, 1186° / 85°0
86 °
Key Largo Park, Tuesday, 11 August
Partly cloudy. High 86°, low 85°.
Pressure30.12 inHg
Wind11.5 mph E
Humidity67%
Visibility6.2 mi
Dew point73°
Wed, 1286° / 85°0.01
86 °
Key Largo Park, Wednesday, 12 August
Light rain. High 86°, low 85°.
Pressure30.06 inHg
Wind8 mph E
Humidity69%
Visibility6.2 mi
Dew point73°
Thu, 1386° / 84°0.01
86 °
Key Largo Park, Thursday, 13 August
Light rain. High 86°, low 84°.
Pressure30.06 inHg
Wind10.4 mph SE
Humidity68%
Visibility—
Dew point74°
Fri, 1486° / 85°0
86 °
Key Largo Park, Friday, 14 August
Overcast. High 86°, low 85°.
Pressure30.12 inHg
Wind19.4 mph E
Humidity69%
Visibility—
Dew point75°
Sat, 1586° / 85°0.42
86 °
Key Largo Park, Saturday, 15 August
Rain. High 86°, low 85°.
Pressure30.15 inHg
Wind18.5 mph SE
Humidity65%
Visibility—
Dew point73°
Sun, 1686° / 85°0
86 °
Key Largo Park, Sunday, 16 August
Partly cloudy. High 86°, low 85°.
Pressure30.09 inHg
Wind13.6 mph SE
Humidity62%
Visibility—
Dew point71°
Mon, 1786° / 84°0.11
86 °
Key Largo Park, Monday, 17 August
Light rain. High 86°, low 84°.
Pressure30.03 inHg
Wind7.7 mph S
Humidity64%
Visibility—
Dew point72°
Tue, 1886° / 84°0.01
86 °
Key Largo Park, Tuesday, 18 August
Light rain. High 86°, low 84°.
Pressure30.00 inHg
Wind11.7 mph S
Humidity67%
Visibility—
Dew point73°
Wed, 1985° / 85°0
85 °
Key Largo Park, Wednesday, 19 August
Overcast. High 85°, low 85°.
Pressure30.00 inHg
Wind12.5 mph S
Humidity69%
Visibility—
Dew point74°
Thu, 2085° / 85°0
85 °
Key Largo Park, Thursday, 20 August
Overcast. High 85°, low 85°.
Pressure30.03 inHg
Wind10.2 mph SE
Humidity68%
Visibility—
Dew point73°
Fri, 2185° / 84°0.04
85 °
Key Largo Park, Friday, 21 August
Light rain. High 85°, low 84°.
Pressure30.00 inHg
Wind9.6 mph SE
Humidity68%
Visibility—
Dew point73°
Sat, 2285° / 84°0.28
85 °
Key Largo Park, Saturday, 22 August
Rain. High 85°, low 84°.
Pressure29.97 inHg
Wind7.7 mph SE
Humidity69%
Visibility—
Dew point73°
Sun, 2385° / 84°0.22
85 °
Key Largo Park, Sunday, 23 August
Light rain. High 85°, low 84°.
Pressure29.97 inHg
Wind14.9 mph SE
Humidity68%
Visibility—
Dew point73°
Mon, 2485° / 83°0.66
85 °
Key Largo Park, Monday, 24 August
Rain. High 85°, low 83°.
Pressure30.03 inHg
Wind14.5 mph SE
Humidity67%
Visibility—
Dew point72°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 80°0.22
84 °
Key Largo Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low80°
Average precipitation0.22 in
Chance of precipitation72%
Record high88° (2025)
Record low75° (1978)
Wed, 2684° / 80°0.22
84 °
Key Largo Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low80°
Average precipitation0.22 in
Chance of precipitation72%
Record high88° (2025)
Record low77° (1996)
Thu, 2784° / 80°0.17
84 °
Key Largo Park, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low80°
Average precipitation0.17 in
Chance of precipitation62%
Record high87° (2025)
Record low76° (2000)
Fri, 2884° / 80°0.16
84 °
Key Largo Park, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low80°
Average precipitation0.16 in
Chance of precipitation68%
Record high88° (2025)
Record low77° (2013)
Sat, 2983° / 80°0.19
83 °
Key Largo Park, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low80°
Average precipitation0.19 in
Chance of precipitation70%
Record high87° (2024)
Record low77° (1990)
Sun, 3083° / 80°0.24
83 °
Key Largo Park, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low80°
Average precipitation0.24 in
Chance of precipitation73%
Record high88° (2023)
Record low76° (2018)
Mon, 3184° / 80°0.16
84 °
Key Largo Park, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low80°
Average precipitation0.16 in
Chance of precipitation72%
Record high88° (2023)
Record low77° (1965)
Tue, 0184° / 81°0.15
84 °
Key Largo Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low81°
Average precipitation0.15 in
Chance of precipitation50%
Record high88° (2023)
Record low77° (1971)
Wed, 0284° / 80°0.18
84 °
Key Largo Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low80°
Average precipitation0.18 in
Chance of precipitation55%
Record high87° (2020)
Record low77° (2017)
Thu, 0383° / 80°0.15
83 °
Key Largo Park, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low80°
Average precipitation0.15 in
Chance of precipitation60%
Record high87° (2022)
Record low77° (1984)
Fri, 0483° / 80°0.15
83 °
Key Largo Park, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low80°
Average precipitation0.15 in
Chance of precipitation68%
Record high87° (2020)
Record low77° (1976)
Sat, 0583° / 80°0.18
83 °
Key Largo Park, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low80°
Average precipitation0.18 in
Chance of precipitation73%
Record high87° (2024)
Record low77° (1960)
Sun, 0683° / 80°0.17
83 °
Key Largo Park, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low80°
Average precipitation0.17 in
Chance of precipitation68%
Record high87° (2021)
Record low77° (1971)
Mon, 0783° / 80°0.15
83 °
Key Largo Park, Monday, 7 September
Climate normal for this date — 60-year average.
Average high83°
Average low80°
Average precipitation0.15 in
Chance of precipitation77%
Record high87° (2021)
Record low76° (2018)
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 Largo Park, 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 Largo Park, 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.