Cudjoe Key weather by month
What a typical year looks like in Cudjoe Key, Florida: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Key West NAS, 21 km from Cudjoe Key; records cover 1945–2026.
The year at a glance
- Precipitation a year
- 43.6 in1108 mm
- Snow a year
- Rare
- Last spring freeze
- Rare
- First fall freeze
- Rare
- Heating degree days
- 47
- Cooling degree days
- 5,115
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 54°12° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Cudjoe Key in January
Highs average 75°24° and lows 66°19°, with 2.2 in55 mm of precipitation in a typical January.
- Record high
- 90°32° (2023)
- Record low
- 43°6° (1981)
- Heating degree days
- 22
- Cooling degree days
- 193
Cudjoe Key in February
Highs average 77°25° and lows 68°20°, with 1.5 in38 mm of precipitation in a typical February.
- Record high
- 92°33° (2023)
- Record low
- 44°7° (1996)
- Heating degree days
- 10
- Cooling degree days
- 212
Cudjoe Key in March
Highs average 79°26° and lows 70°21°, with 1.4 in36 mm of precipitation in a typical March.
- Record high
- 106°41° (2012)
- Record low
- 47°8° (1980)
- Heating degree days
- 4
- Cooling degree days
- 300
Cudjoe Key in April
Highs average 83°28° and lows 73°23°, with 2.4 in60 mm of precipitation in a typical April.
- Record high
- 91°33° (2003)
- Record low
- 54°12° (1987)
- Heating degree days
- 0
- Cooling degree days
- 389
Cudjoe Key in May
Highs average 86°30° and lows 77°25°, with 3.4 in87 mm of precipitation in a typical May.
- Record high
- 96°36° (2025)
- Record low
- 59°15° (2021)
- Heating degree days
- 0
- Cooling degree days
- 502
Cudjoe Key in June
Highs average 88°31° and lows 80°27°, with 4.9 in125 mm of precipitation in a typical June.
- Record high
- 99°37° (1998)
- Record low
- 68°20° (1966)
- Heating degree days
- 0
- Cooling degree days
- 567
Cudjoe Key in July
Highs average 90°32° and lows 81°27°, with 4.3 in109 mm of precipitation in a typical July.
- Record high
- 100°38° (2024)
- Record low
- 70°21° (1968)
- Heating degree days
- 0
- Cooling degree days
- 628
Cudjoe Key in August
Highs average 90°32° and lows 81°27°, with 5.5 in141 mm of precipitation in a typical August.
- Record high
- 102°39° (2024)
- Record low
- 64°18° (1997)
- Heating degree days
- 0
- Cooling degree days
- 634
Cudjoe Key in September
Highs average 89°31° and lows 80°27°, with 8.1 in205 mm of precipitation in a typical September.
- Record high
- 103°39° (2017)
- Record low
- 66°19° (1967)
- Heating degree days
- 0
- Cooling degree days
- 576
Cudjoe Key in OctoberThis month
Highs average 85°30° and lows 78°25°, with 5.7 in145 mm of precipitation in a typical October.
- Record high
- 94°34° (2022)
- Record low
- 60°16° (1957)
- Heating degree days
- 0
- Cooling degree days
- 512
Cudjoe Key in November
Highs average 80°27° and lows 73°23°, with 2.3 in59 mm of precipitation in a typical November.
- Record high
- 96°36° (2020)
- Record low
- 50°10° (1959)
- Heating degree days
- 1
- Cooling degree days
- 347
Cudjoe Key in December
Highs average 77°25° and lows 69°20°, with 1.9 in48 mm of precipitation in a typical December.
- Record high
- 90°32° (2007)
- Record low
- 43°6° (1989)
- Heating degree days
- 10
- Cooling degree days
- 255