Average Rainfall at Cities in California During December





The tables below give monthly averages for rainfall during December at cities in California.

Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

The cities are sorted into separate tables for Southern California and Northern California.

Northern California

December averages for total rainfall
Days Place Inches Milli­metres
9 Antioch 2.5 64
11 Berkeley 5.3 135
13 Clearlake 6.1 154
9 Concord 3.6 90
11 Davis 3.7 95
17 Eureka 8.1 206
10 Fairfield 5.4 137
10 Fremont 3.0 75
7 Fresno 1.8 45
12 Grass Valley 10.5 266
10 Hayward 3.2 81
10 Livermore 2.7 69
6 Madera 1.9 48
9 Merced 2.0 50
9 Modesto 2.2 56
12 Napa 5.5 140
10 Newark 2.8 70
11 Oakland 4.7 118
Days Place Inches Milli­metres
10 Palo Alto 3.0 75
12 Petaluma 5.2 132
8 Porterville 1.9 49
11 Red Bluff 4.2 107
13 Redding 6.3 160
9 Redwood City 3.9 100
10 Richmond 4.9 124
10 Sacramento 3.5 89
12 San Francisco 4.8 121
10 San Jose 2.3 58
12 San Rafael 7.8 198
13 Santa Rosa 6.5 164
10 Sonora 5.5 140
10 Stockton 3.2 80
12 Tracy 2.4 60
10 Turlock 2.3 57
14 Ukiah 8.0 202
11 Vacaville 5.7 144
10 Watsonville 4.5 115
9 Woodland 3.8 97
11 Yuba City 3.7 93

Southern California

Average monthly precipitation in December
Days Place Inches Milli­metres
6 Anaheim 2.4 61
6 Bakersfield 1.1 28
5 Burbank 2.5 64
5 Chula Vista 1.6 40
2 El Centro 0.4 9
6 Escondido 2.1 54
6 Fullerton 1.9 47
7 Hanford 1.4 37
4 Irvine 2.3 59
4 Lancaster 1.1 28
5 Long Beach 2.2 55
6 Los Angeles 2.5 63
5 Oceanside 1.6 40
6 Ontario 1.9 48
6 Oxnard 2.1 53
4 Palmdale 1.3 33
6 Pasadena 3.3 85
5 Pomona 2.3 58
5 Riverside 1.5 38
8 Salinas 2.1 54
6 San Diego 1.7 42
8 San Luis Obispo 3.6 91
6 Santa Ana 2.2 55
6 Santa Barbara 3.1 78
10 Santa Cruz 6.0 153
6 Torrance 2.2 57
4 Victorville 0.9 24
6 Visalia 1.8 46
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

California City
Rainfall
Back to Top