Location Jul-03 Aug-03 Sep-03 Oct-03 Nov-03 Dec-04 Jan-04 Feb-04 Mar-04 Apr-04 May-04 Jun-04 STD SN POSN
Angwin T 0.31 0.03 0.09 6.02 15.56 4.17 11.05 2.14 1.20 0.00 0.19 40.76 40.67 100%
Antioch 0.00 0.35 0.00 0.00 0.91 4.02 1.78 4.21 N/A 0.20 N/A 0.00 11.47 13.33 86%
Ben Lomond 0.00 0.00 0.00 0.19 4.49 19.39 6.14 11.33 1.64 0.80 0.05 0.00 44.03 47.68 92%
Berkeley T 0.00 0.01 0.05 2.10 10.39 3.40 7.51 0.91 0.47 0.12 0.00 24.96 25.40 98%
Big Sur Station 0.00 0.00 0.00 0.21 2.44 18.07 3.57 11.38 0.44 0.05 0.00 0.00 36.16 43.20 84%
Calistoga 0.00 0.00 0.00 0.00 3.60 17.13 4.08 10.93 1.90 0.97 0.00 0.00 38.61 38.51 100%
Carmel Valley 0.01 0.00 0.02 0.25 0.88 5.05 1.64 6.39 0.60 0.08 T 0.11 15.03 17.17 88%
Cazadero  T 0.00 0.12 0.00 7.09 32.21 9.87 21.76 3.22 3.14 0.29 0.00 77.70 70.63 110%
Cloverdale 0.00 0.00 T 0.00 5.37 15.64 5.38 12.91 1.40 0.63 T 0.02 41.35 42.06 98%
Concord 0.00 0.20 T 0.00 1.65 5.97 3.34 5.57 0.59 0.09 0.07 0.00 17.48 15.72 111%
Felton 0.00 0.00 0.01 0.01 5.09 19.34 2.36 10.21 1.13 1.25 0.10 0.00 39.50    
Fort Ross 0.13 0.00 0.02 0.00 N/A 12.44 4.24 9.30 2.33 1.38 0.17   30.01 37.08 81%
Fremont T 0.00 0.02 0.01 1.69 3.73 1.77 2.93 0.55 0.06 0.05 0.00 10.81    
Gilroy 0.00 0.77 0.00 0.25 0.83 6.88 2.78 5.60 0.54 0.29 0.22 0.00 18.16 20.60 88%
Graton 0.00 0.00 0.15 0.00 3.50 15.60 6.30 11.28 1.66 1.08 0.01 0.00 39.58 40.83 97%
Half Moon Bay N/A N/A 0.25 0.22 2.27 8.81 3.33 6.37 1.39 0.31 0.15 0.05 23.15 27.96 83%
Guernville 0.00 0.00 0.18 0.10 6.21 21.08 7.63 15.50 2.70 1.72 N/A 0.00 55.12    
Healdsburg 0.04 0.00 0.05 0.00 4.06 18.81 5.75 12.82 1.79 1.55 0.08 0.00 44.95 42.15 107%
Hollister 0.00 0.03 0.00 0.22 0.77 6.33 1.56 4.28 0.92 0.08 0.08 0.00 14.27 13.61 105%
Kentfield 0.00 0.03 0.01 0.00 3.02 16.49 6.41 11.21 2.06 1.69 0.10 0.00 41.02 47.47 86%
King City 0.10 0.12 0.00 0.26 0.17 3.73 0.69 4.12 0.26 0.00 0.00   9.45 12.30 77%
Livermore T 0.29 T 0.02 2.02 3.57 2.19 4.01 0.39 0.18 0.11 0.00 12.78 14.82 86%
Los Gatos 0.00 0.02 0.00 0.13 3.31 6.25 3.55 6.67 0.64 0.17 0.00   20.74 22.64 92%
Martinez 0.00 0.00 0.10 0.00 1.39 6.11 2.07 5.10 0.63 0.06 0.08 0.00 15.54 19.58 79%
Monterey T 0.08 T 0.28 1.72 6.80 1.92 4.44 0.65 0.10 0.01 0.10 16.10 20.35 79%
Mntry NWSFO 0.01 0.05 0.02 0.35 1.66 5.33 1.34 4.05 0.53 0.01 0.00 0.06 13.41    
Mount Diablo T 0.05 T 0.02 1.63 6.69 3.37 6.27 1.00 0.20 0.09 0.00 19.32 23.96 81%
Mount Hamilton T 1.02 0.39 0.07 3.71 6.92 2.56 6.80 0.88 0.52 0.13 0.00 23.00 23.73 97%
Muir Woods 0.05 0.03 0.03 0.02 2.27 12.19 4.83 8.22 0.71 1.14 0.24   29.73 37.59 79%
Napa T 0.62 0.03 0.25 3.14 7.70 3.60 6.53 0.86 0.34 0.10 0.00 23.17 26.46 88%
Newark 0.01 T 0.00 0.04 1.50 3.57 1.53 2.61 0.41 0.03 0.08 0.00 9.78 14.85 66%
Oakland Musm 0.00 0.00 0.00 0.00 1.42 7.48 2.14 6.06 0.23 N/A 0.00 N/A 17.33 22.94 76%
Occidental 0.05 0.00 0.07 0.02 4.08 18.99 7.25 13.83 3.15 1.86 0.07 0.00 49.37 55.87 88%
Pacifica 4SSE 0.00 0.00 0.16 0.10 3.07 12.64 4.17 7.80 0.98 0.57 0.12 0.00 29.61 29.50 100%
Pacifica 2S 0.18 0.03 0.04 0.08 1.96 7.88 3.75 6.85 0.79 0.55 0.15 0.00 22.26    
Paicines 0.00 0.20 0.00 0.00 N/A 4.72 2.10 5.20 0.35 0.06 0.00 0.00 12.63 15.96 79%
Palo Alto 0.00 0.00 0.00 0.00 1.25 4.33 2.64 3.08 0.31 0.13 0.06 0.00 11.80 15.71 75%
Panoche T 0.00 0.00 0.06 0.25 2.54 1.47 3.94 0.17 0.00 T 0.00 8.43 10.56 80%
Petaluma T 0.00 0.03 0.27 1.76 7.27 2.45 6.42 1.55 0.41 0.08 0.00 20.24 25.85 78%
Pinnacles 0.00 0.07 0.00 T 0.71 3.57 1.24 5.52 0.50 T 0.00 0.00 11.61 17.35 67%
Priest Valley 0.00 0.10 0.00 0.12 0.79 4.76 1.34 6.18 0.48 0.00 0.00 0.00 13.77 21.00 66%
Redwood City 0.00 0.00 0.00 0.00 1.27 6.44 4.60 5.12 0.35   0.00 0.00 17.78 20.16 88%
Richmond 0.00 0.00 0.00 0.00 2.14 9.82 3.20 6.17 0.73 0.26 0.00 0.00 22.32 23.35 96%
Saint Helena 0.00 0.20 0.00 0.06 4.15 12.86 4.07 10.83 1.62 0.10 T 0.00 33.89 34.88 97%
Salinas T 0.13 0.01 0.29 0.89 4.65 1.45 3.86 0.55 0.02 0.03 T 11.88 15.12 79%
San Clemente Dam 0.00 0.01 0.00 0.27 0.87 6.88 2.44 6.88 0.52 0.11 0.00 0.15 18.13 21.83 83%
San Fran. Ocnsd 0.00 0.00 0.00 0.00 0.82 6.34 3.19 5.29 0.86 0.18 0.00 0.00 16.68 19.77 84%
San Fran. Dwntn 0.00 0.06 0.00 0.04 2.22 7.69 3.40 5.67 1.16 0.12 0.12 0.00 20.48 22.28 92%
San Gregorio 0.01 0.04 0.11 0.16 2.82 9.41 3.75 8.07 1.22 0.33 0.15 0.04 26.11 29.52 88%
San Jose 0.00 0.03 0.03 0.00 1.91 4.91 1.61 4.28 0.49 0.40 0.08 0.00 13.74 15.08 91%
San Rafael 0.01 0.00 0.00 N/A N/A 8.29 4.52 N/A N/A N/A N/A N/A 12.82 34.29 37%
Santa Cruz T 0.01 0.00 0.31 3.38 9.93 3.27 5.62 1.34 0.43 0.09 0.01 24.39 30.67 80%
Santa Rosa 0.03 0.01 0.07 0.04 3.19 11.42 3.44 9.24 1.14 0.68 0.03 0.00 29.29 31.01 94%
Skyline Ridge 0.00 0.02 0.12 0.07 3.97 13.29 4.44 10.48 1.38 0.52 0.16 0.10 34.55    
Sonoma 0.00 0.00 0.00 T 2.88 7.95 3.00 6.31 1.06 0.44 0.07 0.00 21.71 30.64 71%
Upr Sn Lndro T 0.00 0.00 0.00 1.89 7.21 3.21 6.32 1.06 0.25 0.09 0.00 20.03 26.30 76%
Vallejo 0.00 0.00 0.00 0.00 1.80 2.15 1.07 5.28 0.69 0.13 0.01 0.00 11.13    
Watsonville 0.00 0.02 0.01 0.41 2.31 7.80 2.49 5.74 0.77 0.40 0.11 0.00 20.06 23.25 86%
Woodside 0.00 0.00 0.00 0.16 2.17 2.33 3.46 5.64 1.11 0.00 0.00   14.87 28.71 52%
Yountville 0.00 0.00 0.00 0.00 5.07 13.11 4.24 10.12 1.35 0.75 0.01 0.20 34.85    
NOTE: These climatological data are preliminary. For official certified climate data please contact the National Climate Data Center in Ashville North Carolina at 828-271-4800. 
STD = Season to Date | SN = Seasonal Normal | POSN = Percent of Seasonal Normal