Twain weather by month
What a typical year looks like in Twain, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Quincy, 14 km from Twain; records cover 1895–2026.
The year at a glance
- Precipitation a year
- 41.7 in1058 mm
- Snow a year
- 28 in72 cm
- Last spring freeze
- May 23
- First fall freeze
- Sep 27
- Heating degree days
- 5,729
- Cooling degree days
- 283
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 14°−10° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Twain in January
Highs average 44°7° and lows 25°−4°, with 7.7 in194 mm of precipitation and 6 in15 cm of snow in a typical January.
- Record high
- 74°23° (1918)
- Record low
- −24°−31° (1937)
- Heating degree days
- 944
- Cooling degree days
- 0
Twain in February
Highs average 50°10° and lows 26°−3°, with 7.6 in193 mm of precipitation and 8 in19 cm of snow in a typical February.
- Record high
- 80°27° (1920)
- Record low
- −16°−27° (1989)
- Heating degree days
- 756
- Cooling degree days
- 0
Twain in March
Highs average 56°13° and lows 29°−2°, with 6.7 in169 mm of precipitation and 5 in14 cm of snow in a typical March.
- Record high
- 87°31° (2026)
- Record low
- 0°−18° (1952)
- Heating degree days
- 694
- Cooling degree days
- 0
Twain in April
Highs average 62°17° and lows 32°0°, with 3.1 in80 mm of precipitation and 1.6 in4.1 cm of snow in a typical April.
- Record high
- 89°32° (2009)
- Record low
- 12°−11° (1982)
- Heating degree days
- 536
- Cooling degree days
- 0
Twain in May
Highs average 71°22° and lows 39°4°, with 1.9 in49 mm of precipitation in a typical May.
- Record high
- 100°38° (1992)
- Record low
- 20°−7° (1984)
- Heating degree days
- 328
- Cooling degree days
- 7
Twain in June
Highs average 80°27° and lows 43°6°, with 0.71 in18 mm of precipitation in a typical June.
- Record high
- 105°41° (1985)
- Record low
- 25°−4° (1950)
- Heating degree days
- 135
- Cooling degree days
- 37
Twain in July
Highs average 89°32° and lows 48°9°, with 0.1 in2.5 mm of precipitation in a typical July.
- Record high
- 111°44° (1994)
- Record low
- 23°−5° (1912)
- Heating degree days
- 25
- Cooling degree days
- 129
Twain in August
Highs average 88°31° and lows 45°7°, with 0.14 in3.6 mm of precipitation in a typical August.
- Record high
- 111°44° (1994)
- Record low
- 20°−7° (1910)
- Heating degree days
- 37
- Cooling degree days
- 87
Twain in September
Highs average 82°28° and lows 40°4°, with 0.42 in11 mm of precipitation in a typical September.
- Record high
- 110°43° (1988)
- Record low
- 15°−9° (1972)
- Heating degree days
- 139
- Cooling degree days
- 22
Twain in OctoberThis month
Highs average 69°21° and lows 33°0°, with 1.9 in49 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 98°37° (1988)
- Record low
- 10°−12° (1913)
- Heating degree days
- 440
- Cooling degree days
- 1
Twain in November
Highs average 52°11° and lows 28°−2°, with 4.1 in103 mm of precipitation and 1.7 in4.3 cm of snow in a typical November.
- Record high
- 86°30° (1990)
- Record low
- −3°−19° (1985)
- Heating degree days
- 740
- Cooling degree days
- 0
Twain in December
Highs average 43°6° and lows 25°−4°, with 7.3 in186 mm of precipitation and 6 in16 cm of snow in a typical December.
- Record high
- 76°24° (1921)
- Record low
- −24°−31° (1972)
- Heating degree days
- 955
- Cooling degree days
- 0