Average Rainfall at Cities in California During January





The tables below give monthly averages for rainfall during January 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

January averages for total rainfall
Days Place Inches Milli­metres
11 Antioch 2.7 68
11 Berkeley 4.8 123
14 Clearlake 6.2 157
10 Concord 3.5 88
12 Davis 4.0 102
17 Eureka 6.7 169
10 Fairfield 4.7 119
10 Fremont 3.0 76
8 Fresno 2.2 55
13 Grass Valley 9.3 236
10 Hayward 2.9 74
10 Livermore 2.8 71
7 Madera 2.1 54
10 Merced 2.7 68
10 Modesto 2.6 65
12 Napa 5.0 126
11 Newark 2.8 70
10 Oakland 4.4 110
Days Place Inches Milli­metres
10 Palo Alto 3.0 75
12 Petaluma 4.8 121
9 Porterville 2.1 53
10 Red Bluff 4.7 120
12 Redding 6.0 153
9 Redwood City 3.8 97
10 Richmond 4.8 123
11 Sacramento 3.9 98
11 San Francisco 4.4 112
9 San Jose 2.8 71
13 San Rafael 7.1 181
14 Santa Rosa 5.8 147
10 Sonora 6.3 161
12 Stockton 3.6 91
13 Tracy 2.5 64
10 Turlock 2.6 67
13 Ukiah 7.4 188
12 Vacaville 5.6 141
11 Watsonville 4.4 113
11 Woodland 4.5 113
10 Yuba City 3.8 97

Southern California

Average monthly precipitation in January
Days Place Inches Milli­metres
6 Anaheim 3.2 80
6 Bakersfield 1.2 30
6 Burbank 3.7 93
5 Chula Vista 1.8 46
2 El Centro 0.4 10
6 Escondido 3.2 81
5 Fullerton 2.9 72
8 Hanford 1.8 45
4 Irvine 2.7 68
5 Lancaster 1.5 37
6 Long Beach 2.9 73
6 Los Angeles 3.3 84
6 Oceanside 2.2 56
5 Ontario 2.6 65
6 Oxnard 2.9 74
5 Palmdale 1.4 36
7 Pasadena 4.5 115
5 Pomona 2.9 74
5 Riverside 2.3 58
9 Salinas 2.6 67
7 San Diego 2.0 50
9 San Luis Obispo 5.1 129
6 Santa Ana 2.9 73
7 Santa Barbara 4.4 113
11 Santa Cruz 6.4 163
6 Torrance 3.4 85
5 Victorville 1.0 25
8 Visalia 2.0 50
Reference

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

California City
Rainfall
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