Climate Comfort Score
82/100
Excellent
NOAA 1991–2020 normals 78°F annual avg Public-domain federal data
Duck Key, FL Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 78°F
- Avg annual temp
- 82/100
- Comfort score
- 40.4"
- Annual precip
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Duck Key
Duck Key, Florida averages 78°F a year and scores 82/100 on the comfort index - excellent, milder than 83% of U.S. cities.
- 78°F
- annual average temperature (NOAA normal)
- 82/100
- comfort score, milder than 83% of U.S. cities
- 40.4"
- annual precipitation
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
78°F (25°C)
Avg High
83°F
Avg Low
73°F
Annual Precip
40.4"
Annual Snow
0.0"
Comfort Score
82/100
Excellent
Avg Annual Temperature
78°F
30-year mean (NOAA NCEI)
Annual Precipitation
40.4"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Duck Key) 82.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Duck Key area.
How Duck Key compares to every U.S. city
Duck Key's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
82 Top 17% higher than 83% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Duck Key
MethodologyDuck Key's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 75°F (24°C) | 63°F (17°C) | 69°F (21°C) | 1.6" | 0.0" | 0.0 | 0.0 |
| February | 77°F (25°C) | 65°F (18°C) | 71°F (22°C) | 1.9" | 0.0" | 0.0 | 0.0 |
| March | 79°F (26°C) | 68°F (20°C) | 73°F (23°C) | 1.8" | 0.0" | 0.0 | 0.0 |
| April | 82°F (28°C) | 72°F (22°C) | 77°F (25°C) | 1.8" | 0.0" | 0.0 | 0.3 |
| May | 85°F (29°C) | 75°F (24°C) | 80°F (27°C) | 2.7" | 0.0" | 0.0 | 1.0 |
| June | 88°F (31°C) | 78°F (26°C) | 83°F (28°C) | 5.1" | 0.0" | 0.0 | 5.5 |
| July | 89°F (32°C) | 79°F (26°C) | 84°F (29°C) | 3.6" | 0.0" | 0.0 | 13.6 |
| August | 89°F (32°C) | 79°F (26°C) | 84°F (29°C) | 5.7" | 0.0" | 0.0 | 17.4 |
| September | 88°F (31°C) | 78°F (25°C) | 83°F (28°C) | 6.1" | 0.0" | 0.0 | 7.6 |
| October | 84°F (29°C) | 76°F (24°C) | 80°F (27°C) | 6.0" | 0.0" | 0.0 | 0.7 |
| November | 79°F (26°C) | 70°F (21°C) | 75°F (24°C) | 2.4" | 0.0" | 0.0 | 0.0 |
| December | 77°F (25°C) | 67°F (19°C) | 72°F (22°C) | 1.7" | 0.0" | 0.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.6"
5.6 days with precipitation
February 1.9"
4.6 days with precipitation
March 1.8"
4.1 days with precipitation
April 1.8"
3.8 days with precipitation
May 2.7"
5.3 days with precipitation
June 5.1"
10.4 days with precipitation
July 3.6"
10.7 days with precipitation
August 5.7"
10.5 days with precipitation
September 6.1"
13.2 days with precipitation
October 6.0"
9.7 days with precipitation
November 2.4"
5.7 days with precipitation
December 1.7"
6.6 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
85
Higher = more heating needed
Cooling Degree Days
4,672
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
What Duck Key's climate means for you
Duck Key runs 78°F a year - peaking in August, coldest in January.
- Energy bills track 85 heating and 4,672 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Duck Key, FL
An annual average temperature of 78°F, ranging from a mean daily high of 83°F to a mean daily low of 73°F is what the NOAA 1991–2020 climate normals report for Duck Key, Florida. August is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00082441 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Duck Key receives roughly 40.4 inches of precipitation each year, with negligible snowfall. Growing-season length varies with elevation and microclimate. For energy use, 85 heating degree days and 4,672 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Duck Key scores 82/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, August-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Duck Key, FL? ▼
The average annual temperature in Duck Key, Florida is 78°F. The warmest month averages 89°F (32°C) and the coldest averages 63°F (17°C).
How much rain does Duck Key get? ▼
Duck Key receives 40.4 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Duck Key? ▼
Duck Key has a climate comfort score of 82/100 (Excellent), milder than 83% of U.S. cities in the PlainClimate database.
When is the growing season in Duck Key? ▼
Growing season data is not available for Duck Key.
How much energy does heating and cooling require in Duck Key? ▼
Duck Key has 85 heating degree days and 4,672 cooling degree days annually, a cooling-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Duck Key climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00082441 near Duck Key.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00082441. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.