Clewiston weather by month
What a typical year looks like in Clewiston, Florida: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Moore Haven Lock 1, 18 km from Clewiston; records cover 1918–2026.
The year at a glance
- Precipitation a year
- 48.6 in1235 mm
- Snow a year
- Rare
- Last spring freeze
- Jan 14
- First fall freeze
- Rare
- Heating degree days
- 420
- Cooling degree days
- 3,438
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 37°3° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Clewiston in January
Highs average 74°24° and lows 50°10°, with 2.2 in55 mm of precipitation in a typical January.
- Record high
- 89°32° (1929)
- Record low
- 23°−5° (1940)
- Heating degree days
- 145
- Cooling degree days
- 58
Clewiston in February
Highs average 77°25° and lows 52°11°, with 2 in51 mm of precipitation in a typical February.
- Record high
- 91°33° (1928)
- Record low
- 28°−2° (1947)
- Heating degree days
- 87
- Cooling degree days
- 78
Clewiston in March
Highs average 81°27° and lows 55°13°, with 2.4 in62 mm of precipitation in a typical March.
- Record high
- 94°34° (1928)
- Record low
- 25°−4° (1920)
- Heating degree days
- 50
- Cooling degree days
- 129
Clewiston in April
Highs average 85°29° and lows 60°15°, with 2.4 in62 mm of precipitation in a typical April.
- Record high
- 97°36° (1999)
- Record low
- 33°1° (1950)
- Heating degree days
- 10
- Cooling degree days
- 228
Clewiston in May
Highs average 89°32° and lows 65°18°, with 3.7 in95 mm of precipitation in a typical May.
- Record high
- 98°37° (1927)
- Record low
- 47°8° (1929)
- Heating degree days
- 1
- Cooling degree days
- 362
Clewiston in June
Highs average 91°33° and lows 69°21°, with 8.4 in214 mm of precipitation in a typical June.
- Record high
- 101°38° (1927)
- Record low
- 54°12° (1933)
- Heating degree days
- 0
- Cooling degree days
- 454
Clewiston in July
Highs average 92°33° and lows 71°22°, with 7.5 in189 mm of precipitation in a typical July.
- Record high
- 103°39° (1932)
- Record low
- 60°16° (1920)
- Heating degree days
- 0
- Cooling degree days
- 513
Clewiston in August
Highs average 92°33° and lows 72°22°, with 7.9 in200 mm of precipitation in a typical August.
- Record high
- 98°37° (1918)
- Record low
- 61°16° (1961)
- Heating degree days
- 0
- Cooling degree days
- 525
Clewiston in September
Highs average 91°33° and lows 71°22°, with 5.9 in151 mm of precipitation in a typical September.
- Record high
- 99°37° (1972)
- Record low
- 58°14° (1938)
- Heating degree days
- 0
- Cooling degree days
- 477
Clewiston in OctoberThis month
Highs average 86°30° and lows 66°19°, with 2.9 in73 mm of precipitation in a typical October.
- Record high
- 98°37° (1927)
- Record low
- 40°4° (1938)
- Heating degree days
- 3
- Cooling degree days
- 351
Clewiston in November
Highs average 80°27° and lows 59°15°, with 1.5 in39 mm of precipitation in a typical November.
- Record high
- 91°33° (1943)
- Record low
- 31°−1° (1940)
- Heating degree days
- 28
- Cooling degree days
- 163
Clewiston in December
Highs average 77°25° and lows 54°12°, with 1.8 in45 mm of precipitation in a typical December.
- Record high
- 95°35° (1924)
- Record low
- 23°−5° (1934)
- Heating degree days
- 96
- Cooling degree days
- 100