South Cle Elum weather by month
What a typical year looks like in South Cle Elum, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Cle Elum, 3 km from South Cle Elum; records cover 1899–2026.
The year at a glance
- Precipitation a year
- 24.7 in627 mm
- Snow a year
- Rare
- Last spring freeze
- May 7
- First fall freeze
- Sep 28
- Heating degree days
- 6,992
- Cooling degree days
- 249
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 4°−16° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
South Cle Elum in January
Highs average 35°2° and lows 22°−5°, with 3.4 in86 mm of precipitation in a typical January.
- Record high
- 57°14° (1971)
- Record low
- −33°−36° (1950)
- Heating degree days
- 1128
- Cooling degree days
- 0
South Cle Elum in February
Highs average 41°5° and lows 24°−5°, with 2.5 in63 mm of precipitation in a typical February.
- Record high
- 69°21° (1962)
- Record low
- −30°−34° (1950)
- Heating degree days
- 920
- Cooling degree days
- 0
South Cle Elum in March
Highs average 49°9° and lows 28°−2°, with 2.7 in69 mm of precipitation in a typical March.
- Record high
- 79°26° (1930)
- Record low
- −3°−19° (2019)
- Heating degree days
- 826
- Cooling degree days
- 0
South Cle Elum in April
Highs average 57°14° and lows 33°0°, with 1.4 in36 mm of precipitation in a typical April.
- Record high
- 96°36° (1931)
- Record low
- 12°−11° (1936)
- Heating degree days
- 597
- Cooling degree days
- 0
South Cle Elum in May
Highs average 66°19° and lows 40°5°, with 1.6 in42 mm of precipitation in a typical May.
- Record high
- 99°37° (1983)
- Record low
- 19°−7° (1954)
- Heating degree days
- 368
- Cooling degree days
- 4
South Cle Elum in June
Highs average 72°22° and lows 47°8°, with 1.1 in28 mm of precipitation in a typical June.
- Record high
- 108°42° (2021)
- Record low
- 25°−4° (1909)
- Heating degree days
- 195
- Cooling degree days
- 25
South Cle Elum in July
Highs average 81°27° and lows 53°12°, with 0.54 in14 mm of precipitation in a typical July.
- Record high
- 105°41° (1919)
- Record low
- 30°−1° (1908)
- Heating degree days
- 54
- Cooling degree days
- 113
South Cle Elum in August
Highs average 81°27° and lows 51°11°, with 0.47 in12 mm of precipitation in a typical August.
- Record high
- 105°41° (1967)
- Record low
- 23°−5° (1910)
- Heating degree days
- 55
- Cooling degree days
- 93
South Cle Elum in September
Highs average 73°23° and lows 43°6°, with 0.9 in23 mm of precipitation in a typical September.
- Record high
- 99°37° (2025)
- Record low
- 12°−11° (1926)
- Heating degree days
- 231
- Cooling degree days
- 14
South Cle Elum in OctoberThis month
Highs average 58°14° and lows 34°1°, with 2.4 in62 mm of precipitation in a typical October.
- Record high
- 88°31° (1958)
- Record low
- 10°−12° (1919)
- Heating degree days
- 594
- Cooling degree days
- 0
South Cle Elum in November
Highs average 43°6° and lows 28°−2°, with 4.1 in103 mm of precipitation in a typical November.
- Record high
- 72°22° (1917)
- Record low
- −13°−25° (1985)
- Heating degree days
- 886
- Cooling degree days
- 0
South Cle Elum in December
Highs average 34°1° and lows 22°−5°, with 3.5 in89 mm of precipitation in a typical December.
- Record high
- 62°17° (2021)
- Record low
- −31°−35° (1968)
- Heating degree days
- 1138
- Cooling degree days
- 0