Monthly outlook for Duck Key, FL: average high 81.1°, average low 77.4°. That is 0.7° above the climate normal for October. Precipitation is expected on 10 days (about 2.4 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 16 October (87.1°), the coolest 25 October (74.4°).
81.1°/77.4°
Average high / low
+0.7°
Above normal
10 / 6
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
81.6°
80.2°
+0.8°
26 October – 4 November
80.2°
79.1°
+0.6°
5 November – 14 November
at normal
77.8°
—
October records over 66 years
86.9°12 October 2023All-time high
63.7°21 October 1989All-time low
Climate normals and records are computed from the nearest reference point — Layton (7 mi).
Sat, 1782° / 78°0.29
82 °
Duck Key, Saturday, 17 October
Rain. High 82°, low 78°.
Pressure30.00 inHg
Wind4.4 mph S
Humidity83%
Visibility2.4 mi
Dew point73°
Sun, 1882° / 77°0.54
82 °
Duck Key, Sunday, 18 October
Rain. High 82°, low 77°.
Pressure30.00 inHg
Wind14.3 mph NE
Humidity79%
Visibility6.2 mi
Dew point74°
Mon, 1982° / 78°0.23
82 °
Duck Key, Monday, 19 October
Rain. High 82°, low 78°.
Pressure30.00 inHg
Wind20.2 mph NE
Humidity70%
Visibility6.2 mi
Dew point72°
Tue, 2082° / 77°0
82 °
Duck Key, Tuesday, 20 October
Clear. High 82°, low 77°.
Pressure30.00 inHg
Wind17.2 mph NE
Humidity77%
Visibility6.2 mi
Dew point72°
Wed, 2182° / 76°0
82 °
Duck Key, Wednesday, 21 October
Clear. High 82°, low 76°.
Pressure29.94 inHg
Wind19.9 mph N
Humidity56%
Visibility—
Dew point63°
Thu, 2280° / 76°0.3
80 °
Duck Key, Thursday, 22 October
Light rain. High 80°, low 76°.
Pressure29.91 inHg
Wind18.8 mph NE
Humidity70%
Visibility—
Dew point68°
Fri, 2380° / 76°0.19
80 °
Duck Key, Friday, 23 October
Light rain. High 80°, low 76°.
Pressure29.91 inHg
Wind15.9 mph N
Humidity64%
Visibility—
Dew point66°
Sat, 2480° / 76°0.05
80 °
Duck Key, Saturday, 24 October
Light rain. High 80°, low 76°.
Pressure29.94 inHg
Wind18.7 mph NE
Humidity58%
Visibility—
Dew point62°
Sun, 2579° / 74°0.01
79 °
Duck Key, Sunday, 25 October
Light rain. High 79°, low 74°.
Pressure29.94 inHg
Wind16.5 mph N
Humidity57%
Visibility—
Dew point60°
Mon, 2679° / 76°0
79 °
Duck Key, Monday, 26 October
Clear. High 79°, low 76°.
Pressure30.00 inHg
Wind10 mph NE
Humidity64%
Visibility—
Dew point64°
Tue, 2778° / 77°0
78 °
Duck Key, Tuesday, 27 October
Overcast. High 78°, low 77°.
Pressure30.03 inHg
Wind8.9 mph NE
Humidity67%
Visibility—
Dew point65°
Wed, 2880° / 78°0
80 °
Duck Key, Wednesday, 28 October
Overcast. High 80°, low 78°.
Pressure30.00 inHg
Wind11.5 mph E
Humidity69%
Visibility—
Dew point68°
Thu, 2981° / 79°0.2
81 °
Duck Key, Thursday, 29 October
Light rain. High 81°, low 79°.
Pressure29.94 inHg
Wind14.7 mph NE
Humidity65%
Visibility—
Dew point66°
Fri, 3082° / 80°0.13
82 °
Duck Key, Friday, 30 October
Light rain. High 82°, low 80°.
Pressure29.88 inHg
Wind16.5 mph E
Humidity73%
Visibility—
Dew point71°
Sat, 3181° / 80°0.11
81 °
Duck Key, Saturday, 31 October
Light rain. High 81°, low 80°.
Pressure29.88 inHg
Wind15.3 mph NE
Humidity74%
Visibility—
Dew point71°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0179° / 76°0.09
79 °
Duck Key, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high79°
Average low76°
Average precipitation0.09 in
Chance of precipitation35%
Record high84° (2019)
Record low63° (1993)
Mon, 0279° / 76°0.1
79 °
Duck Key, Monday, 2 November
Climate normal for this date — 60-year average.
Average high79°
Average low76°
Average precipitation0.1 in
Chance of precipitation48%
Record high84° (2019)
Record low62° (2014)
Tue, 0379° / 75°0.09
79 °
Duck Key, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high79°
Average low75°
Average precipitation0.09 in
Chance of precipitation47%
Record high83° (2019)
Record low65° (1966)
Wed, 0479° / 75°0.14
79 °
Duck Key, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high79°
Average low75°
Average precipitation0.14 in
Chance of precipitation45%
Record high83° (2019)
Record low61° (1966)
Thu, 0578° / 75°0.11
78 °
Duck Key, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high78°
Average low75°
Average precipitation0.11 in
Chance of precipitation35%
Record high82° (2019)
Record low62° (1969)
Fri, 0678° / 75°0.07
78 °
Duck Key, Friday, 6 November
Climate normal for this date — 60-year average.
Average high78°
Average low75°
Average precipitation0.07 in
Chance of precipitation25%
Record high83° (2019)
Record low64° (1969)
Sat, 0778° / 75°0.06
78 °
Duck Key, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high78°
Average low75°
Average precipitation0.06 in
Chance of precipitation27%
Record high82° (2019)
Record low63° (2010)
Sun, 0878° / 75°0.1
78 °
Duck Key, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high78°
Average low75°
Average precipitation0.1 in
Chance of precipitation35%
Record high83° (2019)
Record low66° (2012)
Mon, 0978° / 75°0.07
78 °
Duck Key, Monday, 9 November
Climate normal for this date — 60-year average.
Average high78°
Average low75°
Average precipitation0.07 in
Chance of precipitation37%
Record high82° (2019)
Record low67° (2012)
Tue, 1078° / 75°0.06
78 °
Duck Key, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high78°
Average low75°
Average precipitation0.06 in
Chance of precipitation30%
Record high81° (1986)
Record low63° (1991)
Wed, 1178° / 74°0.06
78 °
Duck Key, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high78°
Average low74°
Average precipitation0.06 in
Chance of precipitation28%
Record high81° (2020)
Record low58° (2025)
Thu, 1278° / 74°0.07
78 °
Duck Key, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high78°
Average low74°
Average precipitation0.07 in
Chance of precipitation20%
Record high82° (2015)
Record low64° (1977)
Fri, 1377° / 74°0.04
77 °
Duck Key, Friday, 13 November
Climate normal for this date — 60-year average.
Average high77°
Average low74°
Average precipitation0.04 in
Chance of precipitation23%
Record high82° (2018)
Record low60° (1968)
Sat, 1477° / 74°0.06
77 °
Duck Key, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high77°
Average low74°
Average precipitation0.06 in
Chance of precipitation30%
Record high82° (2018)
Record low61° (1975)
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 Duck Key, 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 Duck Key, 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.