North San Juan weather by month
What a typical year looks like in North San Juan, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Nevada City, 17 km from North San Juan; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 62.3 in1581 mm
- Snow a year
- 15 in37 cm
- Last spring freeze
- Apr 17
- First fall freeze
- Nov 11
- Heating degree days
- 4,039
- Cooling degree days
- 846
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 25°−4° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
North San Juan in January
Highs average 51°10° and lows 35°2°, with 10.9 in276 mm of precipitation and 2.3 in5.8 cm of snow in a typical January.
- Record high
- 83°28° (1920)
- Record low
- −1°−18° (1937)
- Heating degree days
- 682
- Cooling degree days
- 0
North San Juan in February
Highs average 53°12° and lows 35°2°, with 10.5 in266 mm of precipitation and 5 in12 cm of snow in a typical February.
- Record high
- 86°30° (1906)
- Record low
- 5°−15° (1937)
- Heating degree days
- 588
- Cooling degree days
- 0
North San Juan in March
Highs average 57°14° and lows 37°3°, with 9.9 in250 mm of precipitation and 3 in8 cm of snow in a typical March.
- Record high
- 92°33° (1914)
- Record low
- 12°−11° (1908)
- Heating degree days
- 555
- Cooling degree days
- 0
North San Juan in April
Highs average 63°17° and lows 40°4°, with 5.2 in133 mm of precipitation and 0.9 in2.3 cm of snow in a typical April.
- Record high
- 94°34° (1910)
- Record low
- 18°−8° (1927)
- Heating degree days
- 416
- Cooling degree days
- 2
North San Juan in May
Highs average 71°21° and lows 47°8°, with 2.9 in73 mm of precipitation in a typical May.
- Record high
- 101°38° (1910)
- Record low
- 21°−6° (1930)
- Heating degree days
- 223
- Cooling degree days
- 32
North San Juan in June
Highs average 79°26° and lows 54°12°, with 0.94 in24 mm of precipitation in a typical June.
- Record high
- 104°40° (1936)
- Record low
- 28°−2° (1919)
- Heating degree days
- 68
- Cooling degree days
- 114
North San Juan in July
Highs average 87°31° and lows 60°15°, with 0.03 in0.8 mm of precipitation in a typical July.
- Record high
- 106°41° (1931)
- Record low
- 35°2° (1910)
- Heating degree days
- 5
- Cooling degree days
- 267
North San Juan in August
Highs average 87°30° and lows 59°15°, with 0.14 in3.6 mm of precipitation in a typical August.
- Record high
- 111°44° (1933)
- Record low
- 34°1° (1927)
- Heating degree days
- 5
- Cooling degree days
- 248
North San Juan in September
Highs average 82°28° and lows 55°13°, with 0.53 in13 mm of precipitation in a typical September.
- Record high
- 107°42° (2022)
- Record low
- 27°−3° (1925)
- Heating degree days
- 46
- Cooling degree days
- 151
North San Juan in OctoberThis month
Highs average 71°21° and lows 47°8°, with 2.9 in73 mm of precipitation in a typical October.
- Record high
- 99°37° (1917)
- Record low
- 16°−9° (1919)
- Heating degree days
- 220
- Cooling degree days
- 32
North San Juan in November
Highs average 57°14° and lows 40°4°, with 6.2 in157 mm of precipitation and 0.8 in2 cm of snow in a typical November.
- Record high
- 90°32° (1936)
- Record low
- 13°−11° (1919)
- Heating degree days
- 501
- Cooling degree days
- 0
North San Juan in December
Highs average 48°9° and lows 35°1°, with 12.2 in310 mm of precipitation and 2.7 in6.9 cm of snow in a typical December.
- Record high
- 86°30° (1924)
- Record low
- −1°−18° (1972)
- Heating degree days
- 730
- Cooling degree days
- 0