Glencoe weather by month
What a typical year looks like in Glencoe, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Calaveras Big Trees, 24 km from Glencoe; records cover 1929–2026.
The year at a glance
- Precipitation a year
- 55.5 in1410 mm
- Snow a year
- 105 in266 cm
- Last spring freeze
- May 20
- First fall freeze
- Oct 24
- Heating degree days
- 5,639
- Cooling degree days
- 318
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 18°−8° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Glencoe in January
Highs average 45°7° and lows 30°−1°, with 10.6 in268 mm of precipitation and 19 in49 cm of snow in a typical January.
- Record high
- 73°23° (1931)
- Record low
- 1°−17° (1937)
- Heating degree days
- 846
- Cooling degree days
- 0
Glencoe in February
Highs average 46°8° and lows 30°−1°, with 9.8 in249 mm of precipitation and 26 in66 cm of snow in a typical February.
- Record high
- 82°28° (1930)
- Record low
- 3°−16° (1962)
- Heating degree days
- 759
- Cooling degree days
- 0
Glencoe in March
Highs average 49°9° and lows 32°0°, with 8.5 in215 mm of precipitation and 19 in49 cm of snow in a typical March.
- Record high
- 82°28° (1930)
- Record low
- 8°−13° (1951)
- Heating degree days
- 767
- Cooling degree days
- 0
Glencoe in April
Highs average 54°12° and lows 35°2°, with 4.6 in117 mm of precipitation and 11 in29 cm of snow in a typical April.
- Record high
- 88°31° (1931)
- Record low
- 15°−9° (1970)
- Heating degree days
- 615
- Cooling degree days
- 0
Glencoe in May
Highs average 63°17° and lows 42°5°, with 2.8 in71 mm of precipitation and 2.2 in5.6 cm of snow in a typical May.
- Record high
- 93°34° (1984)
- Record low
- 21°−6° (1930)
- Heating degree days
- 403
- Cooling degree days
- 5
Glencoe in June
Highs average 73°23° and lows 49°9°, with 0.95 in24 mm of precipitation and 0.1 in0.3 cm of snow in a typical June.
- Record high
- 100°38° (1942)
- Record low
- 21°−6° (1930)
- Heating degree days
- 158
- Cooling degree days
- 38
Glencoe in July
Highs average 81°27° and lows 56°13°, with 0.11 in2.8 mm of precipitation in a typical July.
- Record high
- 107°42° (1933)
- Record low
- 31°−1° (1987)
- Heating degree days
- 27
- Cooling degree days
- 123
Glencoe in August
Highs average 80°27° and lows 55°13°, with 0.06 in1.5 mm of precipitation in a typical August.
- Record high
- 106°41° (1931)
- Record low
- 32°0° (1968)
- Heating degree days
- 30
- Cooling degree days
- 103
Glencoe in September
Highs average 74°23° and lows 51°10°, with 0.39 in9.9 mm of precipitation in a typical September.
- Record high
- 106°41° (1932)
- Record low
- 28°−2° (1971)
- Heating degree days
- 128
- Cooling degree days
- 42
Glencoe in OctoberThis month
Highs average 64°18° and lows 43°6°, with 2.9 in74 mm of precipitation and 0.3 in0.8 cm of snow in a typical October.
- Record high
- 94°34° (1932)
- Record low
- 20°−7° (1971)
- Heating degree days
- 379
- Cooling degree days
- 7
Glencoe in November
Highs average 52°11° and lows 34°1°, with 5.2 in131 mm of precipitation and 8 in20 cm of snow in a typical November.
- Record high
- 89°32° (1930)
- Record low
- 9°−13° (1931)
- Heating degree days
- 654
- Cooling degree days
- 0
Glencoe in December
Highs average 44°7° and lows 30°−1°, with 9.7 in245 mm of precipitation and 19 in47 cm of snow in a typical December.
- Record high
- 78°26° (1929)
- Record low
- 0°−18° (1932)
- Heating degree days
- 873
- Cooling degree days
- 0