Islandton weather by month
What a typical year looks like in Islandton, South Carolina: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Yemassee 1 N, 24 km from Islandton; records cover 1899–2026.
The year at a glance
- Precipitation a year
- 53.6 in1361 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 24
- First fall freeze
- Nov 1
- Heating degree days
- 2,195
- Cooling degree days
- 1,965
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 19°−7° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Islandton in January
Highs average 59°15° and lows 36°2°, with 3.9 in100 mm of precipitation in a typical January.
- Record high
- 85°29° (1951)
- Record low
- 0°−18° (1985)
- Heating degree days
- 538
- Cooling degree days
- 2
Islandton in February
Highs average 64°18° and lows 39°4°, with 3.7 in94 mm of precipitation in a typical February.
- Record high
- 88°31° (1930)
- Record low
- 4°−16° (1899)
- Heating degree days
- 388
- Cooling degree days
- 4
Islandton in March
Highs average 70°21° and lows 44°7°, with 3.7 in94 mm of precipitation in a typical March.
- Record high
- 92°33° (1907)
- Record low
- 13°−11° (2002)
- Heating degree days
- 273
- Cooling degree days
- 20
Islandton in April
Highs average 77°25° and lows 51°11°, with 3.6 in90 mm of precipitation in a typical April.
- Record high
- 99°37° (1986)
- Record low
- 24°−4° (2003)
- Heating degree days
- 107
- Cooling degree days
- 71
Islandton in May
Highs average 83°29° and lows 59°15°, with 3.5 in88 mm of precipitation in a typical May.
- Record high
- 102°39° (1941)
- Record low
- 33°1° (1963)
- Heating degree days
- 18
- Cooling degree days
- 210
Islandton in June
Highs average 88°31° and lows 67°19°, with 6.7 in169 mm of precipitation in a typical June.
- Record high
- 108°42° (1985)
- Record low
- 45°7° (1988)
- Heating degree days
- 1
- Cooling degree days
- 368
Islandton in July
Highs average 90°32° and lows 70°21°, with 6.4 in162 mm of precipitation in a typical July.
- Record high
- 110°43° (1997)
- Record low
- 56°13° (1918)
- Heating degree days
- 0
- Cooling degree days
- 466
Islandton in August
Highs average 89°31° and lows 70°21°, with 5.5 in140 mm of precipitation in a typical August.
- Record high
- 109°43° (2011)
- Record low
- 49°9° (1994)
- Heating degree days
- 0
- Cooling degree days
- 434
Islandton in September
Highs average 84°29° and lows 64°18°, with 6 in153 mm of precipitation in a typical September.
- Record high
- 107°42° (1925)
- Record low
- 38°3° (1967)
- Heating degree days
- 5
- Cooling degree days
- 278
Islandton in OctoberThis month
Highs average 76°25° and lows 54°12°, with 4.1 in104 mm of precipitation in a typical October.
- Record high
- 97°36° (1904)
- Record low
- 20°−7° (2005)
- Heating degree days
- 93
- Cooling degree days
- 90
Islandton in November
Highs average 68°20° and lows 44°7°, with 2.8 in70 mm of precipitation in a typical November.
- Record high
- 91°33° (1961)
- Record low
- 10°−12° (1970)
- Heating degree days
- 297
- Cooling degree days
- 19
Islandton in December
Highs average 61°16° and lows 38°3°, with 3.8 in96 mm of precipitation in a typical December.
- Record high
- 87°31° (2016)
- Record low
- 10°−12° (1953)
- Heating degree days
- 475
- Cooling degree days
- 3