Compare the Climate and Weather in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island Airport

This page lets you compare and contrast the weather and climate in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island Airport year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

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Average High and Low Temperature

Compare the Average High and Low Temperature in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°F816590757556861011037677NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine Key
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 75°F76°F79°F82°F85°F88°F89°F89°F88°F84°F80°F77°F
Florida Keys Marathon International Airport 75°F77°F80°F83°F86°F89°F90°F90°F89°F85°F80°F77°F
Naval Air Station Key West 75°F76°F79°F82°F85°F87°F89°F89°F88°F84°F80°F77°F
Marco Island Airport 74°F76°F80°F83°F87°F90°F91°F91°F89°F86°F81°F77°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 65°F67°F70°F73°F77°F80°F81°F81°F80°F76°F72°F68°F
Florida Keys Marathon International Airport 65°F67°F70°F73°F77°F80°F81°F81°F79°F76°F72°F68°F
Naval Air Station Key West 66°F67°F69°F73°F76°F79°F80°F80°F79°F77°F72°F68°F
Marco Island Airport 56°F57°F61°F64°F69°F73°F75°F75°F74°F69°F63°F58°F

Big Pine Key

Average Hourly Temperature in Big Pine KeyJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablecomfortablewarmhot

Florida Keys Marathon International Airport

Average Hourly Temperature in Florida Keys Marathon International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablecomfortablewarmhot

Naval Air Station Key West

Average Hourly Temperature in Naval Air Station Key WestJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablecomfortablewarmhot

Marco Island Airport

Average Hourly Temperature in Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcoolcoolwarmhotcoolcomfortablecool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%73316930NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 67%71%70%66%55%34%35%35%34%49%63%64%
Florida Keys Marathon International Airport 67%72%71%66%55%34%35%36%34%49%63%65%
Naval Air Station Key West 67%72%71%66%55%34%35%35%34%49%63%64%
Marco Island Airport 65%68%67%64%56%37%33%33%35%53%64%65%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%6313127314NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 4.3d4.1d4.6d5.5d10.4d16.1d16.6d18.2d17.8d11.4d5.3d4.4d
Florida Keys Marathon International Airport 4.3d4.1d4.7d5.8d10.7d16.5d17.0d18.4d17.9d11.4d5.5d4.4d
Naval Air Station Key West 4.4d4.0d4.2d5.1d9.4d15.3d16.0d17.3d17.2d11.2d5.4d4.4d
Marco Island Airport 4.7d5.0d6.0d6.2d10.1d18.9d20.9d22.3d18.6d9.5d4.8d4.5d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 in6.01.36.4NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 1.4″1.5″1.5″1.8″3.7″5.7″4.3″5.3″5.9″4.1″1.9″1.4″
Florida Keys Marathon International Airport 1.4″1.5″1.5″1.8″3.8″5.8″4.4″5.3″5.9″4.0″1.9″1.3″
Naval Air Station Key West 1.5″1.6″1.4″1.7″3.6″5.6″4.3″5.2″6.0″4.1″1.9″1.4″
Marco Island Airport 1.6″1.7″1.8″1.8″3.0″6.3″5.5″6.1″5.9″3.1″1.7″1.3″

Hours of Daylight

Compare the Hours of Daylight in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr13.710.6NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 10.8h11.3h12.0h12.8h13.4h13.6h13.5h13.0h12.3h11.6h10.9h10.6h
Florida Keys Marathon International Airport 10.8h11.3h12.0h12.8h13.4h13.6h13.5h13.0h12.3h11.6h10.9h10.6h
Naval Air Station Key West 10.8h11.3h12.0h12.8h13.3h13.6h13.5h13.0h12.3h11.6h10.9h10.6h
Marco Island Airport 10.7h11.3h12.0h12.8h13.4h13.7h13.6h13.0h12.3h11.5h10.9h10.5h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%1004010021NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 13.0d12.5d15.4d18.6d26.4d29.6d31.0d31.0d29.9d27.5d20.0d16.1d
Florida Keys Marathon International Airport 13.2d12.7d15.3d18.8d26.6d29.6d31.0d31.0d29.9d27.7d20.0d16.4d
Naval Air Station Key West 12.0d11.8d14.9d17.7d25.3d29.4d30.9d30.9d29.8d26.8d19.3d15.4d
Marco Island Airport 7.1d7.1d10.2d14.1d22.9d29.3d31.0d31.0d29.5d23.9d13.9d10.2d

Average Wind Speed

Compare the Average Wind Speed in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph14.29.110.96.5NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 13.413.113.112.511.29.99.39.410.412.614.013.6
Florida Keys Marathon International Airport 13.313.113.112.411.19.89.29.310.212.513.913.5
Naval Air Station Key West 13.613.313.312.611.310.09.49.510.512.914.313.9
Marco Island Airport 10.410.310.49.88.57.36.76.98.210.010.810.4

Average Water Temperature

Compare the Average Water Temperature in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec70°F70°F75°F75°F80°F80°F85°F85°F867369NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 74°F74°F75°F78°F81°F83°F85°F86°F85°F82°F79°F76°F
Florida Keys Marathon International Airport 74°F74°F75°F78°F81°F83°F85°F86°F85°F82°F79°F76°F
Naval Air Station Key West 74°F74°F75°F77°F80°F83°F85°F86°F85°F82°F79°F76°F
Marco Island Airport 70°F69°F72°F76°F80°F84°F85°F86°F85°F81°F76°F72°F

Tourism Score

Compare the Tourism Score in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.72.36.83.2NowNowMarco Island AirportMarco Island AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.43.97.46.23.1NowNowMarco Island AirportMarco Island AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine Key
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days

Compare the Growing Degree Days in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FNowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island AirportJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.93.8NowNowMarco Island AirportMarco Island AirportFlorida Keys Marathon International AirportFlorida Keys Marathon International AirportBig Pine KeyBig Pine KeyNaval Air Station Key WestNaval Air Station Key West
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Big Pine Key 4.25.16.16.76.45.24.94.74.44.64.33.9
Florida Keys Marathon International Airport 4.25.16.16.76.45.24.94.74.44.64.33.9
Naval Air Station Key West 4.25.16.16.76.45.24.94.64.44.64.33.9
Marco Island Airport 4.15.05.96.66.55.34.94.64.44.64.23.8

This report illustrates the typical weather for Big Pine Key, Florida Keys Marathon International Airport, Naval Air Station Key West, and Marco Island Airport year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

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