Monthly outlook for Duck Key, FL: average high 81.9°, average low 79.5°. That is 0.9° above the climate normal for October. Precipitation is expected on 11 days (about 3.9 inches), against a normal of 7 days and 2.4 inches. The warmest day looks like 12 October (87.3°), the coolest 24 October (72.3°).
81.9°/79.5°
Average high / low
+0.9°
Above normal
11 / 7
Wet days / normal
3.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
83.1°
80.7°
+1.4°
22 October – 31 October
79.9°
79.6°
+0.2°
1 November – 10 November
at normal
78.3°
—
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).
Tue, 1384° / 81°0.04
84 °
Duck Key, Tuesday, 13 October
Light rain. High 84°, low 81°.
Pressure30.00 inHg
Wind15.4 mph NE
Humidity76%
Visibility6.2 mi
Dew point74°
Wed, 1483° / 79°0.17
83 °
Duck Key, Wednesday, 14 October
Rain. High 83°, low 79°.
Pressure30.03 inHg
Wind11.8 mph SE
Humidity81%
Visibility2.7 mi
Dew point73°
Thu, 1584° / 82°0.13
84 °
Duck Key, Thursday, 15 October
Light rain. High 84°, low 82°.
Pressure30.03 inHg
Wind10.7 mph E
Humidity76%
Visibility6.2 mi
Dew point75°
Fri, 1684° / 81°0.15
84 °
Duck Key, Friday, 16 October
Light rain. High 84°, low 81°.
Pressure29.97 inHg
Wind13.3 mph E
Humidity77%
Visibility—
Dew point75°
Sat, 1781° / 79°0.87
81 °
Duck Key, Saturday, 17 October
Rain. High 81°, low 79°.
Pressure29.97 inHg
Wind22.3 mph E
Humidity79%
Visibility—
Dew point73°
Sun, 1880° / 79°1.37
80 °
Duck Key, Sunday, 18 October
Rain. High 80°, low 79°.
Pressure30.03 inHg
Wind30 mph E
Humidity79%
Visibility—
Dew point73°
Mon, 1983° / 82°0.3
83 °
Duck Key, Monday, 19 October
Light rain. High 83°, low 82°.
Pressure30.03 inHg
Wind26.7 mph E
Humidity75%
Visibility—
Dew point74°
Tue, 2082° / 81°0.39
82 °
Duck Key, Tuesday, 20 October
Rain. High 82°, low 81°.
Pressure29.94 inHg
Wind24.9 mph E
Humidity74%
Visibility—
Dew point73°
Wed, 2183° / 81°0.3
83 °
Duck Key, Wednesday, 21 October
Light rain. High 83°, low 81°.
Pressure29.91 inHg
Wind25.3 mph E
Humidity76%
Visibility—
Dew point74°
Thu, 2283° / 82°0.04
83 °
Duck Key, Thursday, 22 October
Light rain. High 83°, low 82°.
Pressure29.94 inHg
Wind23.8 mph E
Humidity74%
Visibility—
Dew point73°
Fri, 2382° / 82°0.07
82 °
Duck Key, Friday, 23 October
Light rain. High 82°, low 82°.
Pressure29.88 inHg
Wind15.9 mph E
Humidity71%
Visibility—
Dew point72°
Sat, 2482° / 72°0.04
82 °
Duck Key, Saturday, 24 October
Light rain. High 82°, low 72°.
Pressure29.91 inHg
Wind23.3 mph N
Humidity45%
Visibility—
Dew point53°
Sun, 2576° / 73°0
76 °
Duck Key, Sunday, 25 October
Overcast. High 76°, low 73°.
Pressure29.94 inHg
Wind11.9 mph N
Humidity61%
Visibility—
Dew point59°
Mon, 2678° / 77°0
78 °
Duck Key, Monday, 26 October
Clear. High 78°, low 77°.
Pressure29.97 inHg
Wind7.6 mph SE
Humidity61%
Visibility—
Dew point63°
Tue, 2778° / 78°0
78 °
Duck Key, Tuesday, 27 October
Overcast. High 78°, low 78°.
Pressure29.94 inHg
Wind2.2 mph S
Humidity62%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2880° / 77°0.08
80 °
Duck Key, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high80°
Average low77°
Average precipitation0.08 in
Chance of precipitation33%
Record high85° (2021)
Record low65° (2008)
Thu, 2979° / 76°0.09
79 °
Duck Key, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high79°
Average low76°
Average precipitation0.09 in
Chance of precipitation37%
Record high83° (2019)
Record low64° (2008)
Fri, 3079° / 76°0.05
79 °
Duck Key, Friday, 30 October
Climate normal for this date — 60-year average.
Average high79°
Average low76°
Average precipitation0.05 in
Chance of precipitation27%
Record high83° (1993)
Record low66° (2017)
Sat, 3179° / 76°0.09
79 °
Duck Key, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high79°
Average low76°
Average precipitation0.09 in
Chance of precipitation37%
Record high83° (2019)
Record low69° (2017)
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)
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.