Big Coppitt Key climate

Big Coppitt Key Weather in March

NOAA 1991-2020 normals for Key West Nas, 2.8 km from Big Coppitt Key

Average highs run from 78°F on March 1 to 81°F on March 31, and lows from 69°F to 71°F. Normal precipitation for the month is 1.41 in over about 5 wet days.

March day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Big Coppitt Key, in °F, with the record for each date.405060708090100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
79°F
Average low
70°F
Precipitation
1.41 in
Record high
93°FMar 3, 2022
Record low
47°FMar 4, 1980
Chance of a freeze
0%
Daylight
11 h 40 min to 12 h 23 min
Cloud cover
40%
Humidity
76%
Dew point
66°F
Wind
13.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Mar 178°F69°F90°F 202352°F 196817%
Mar 278°F69°F90°F 202351°F 196817%
Mar 378°F69°F93°F 202249°F 198017%
Mar 478°F69°F91°F 202347°F 198017%
Mar 578°F69°F92°F 202352°F 196917%
Mar 678°F69°F91°F 202355°F 201017%
Mar 778°F69°F90°F 202357°F 196017%
Mar 879°F69°F90°F 202357°F 195416%
Mar 979°F69°F92°F 202354°F 199616%
Mar 1079°F69°F88°F 202255°F 196916%
Mar 1179°F70°F89°F 202255°F 199816%
Mar 1279°F70°F90°F 202255°F 199816%
Mar 1379°F70°F92°F 202352°F 196916%
Mar 1479°F70°F88°F 202352°F 196916%
Mar 1579°F70°F88°F 202251°F 199316%
Mar 1679°F70°F88°F 202256°F 197016%
Mar 1779°F70°F89°F 202258°F 195416%
Mar 1879°F70°F91°F 202357°F 194715%
Mar 1979°F70°F89°F 202257°F 201015%
Mar 2080°F70°F89°F 202259°F 195815%
Mar 2180°F70°F89°F 202255°F 195615%
Mar 2280°F70°F93°F 202254°F 199615%
Mar 2380°F70°F92°F 202253°F 198615%
Mar 2480°F70°F91°F 202254°F 196815%
Mar 2580°F71°F87°F 201556°F 196815%
Mar 2680°F71°F86°F 196552°F 196915%
Mar 2780°F71°F87°F 202552°F 196915%
Mar 2880°F71°F87°F 199459°F 197815%
Mar 2981°F71°F88°F 202260°F 195814%
Mar 3081°F71°F90°F 202258°F 195514%
Mar 3181°F71°F90°F 202258°F 201014%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Big Coppitt Key, in percent.051015201102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (EDT).

March 1
sunrise 6:49 AM, sunset 6:29 PM
March 31
sunrise 7:19 AM, sunset 7:42 PM

Every day of March: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00012850 (Key West Nas), public domain. Records: NOAA GHCN-Daily, station USW00012850, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.