FOLSOM DAM, CA

Maximum of Precipitation (Inches)

(043113)

File last updated on April 24, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANN
1955-----z-----z-----z-----z-----z-----z-----z-----z-----z0.16y0.68 1.64 -----z
19561.00 1.10 0.05 0.53 1.64 0.00 0.00 0.00 0.56 0.97 0.00 0.34 1.64
19571.28 0.89 1.47 1.16 1.36 0.00 0.00 0.00 0.39 0.73 0.85 0.76 1.47
19581.02 1.58 1.18 2.19 0.78 0.81 0.00 0.00 0.30 0.27 0.19 0.54 2.19
19591.12 1.05 0.33 2.00 0.04 0.00 0.00 0.00 1.41 0.00 0.00 0.73 2.00
19601.13 1.54 1.00 0.66 0.64 0.00 0.00 0.00 0.01 0.02 1.98 0.54 1.98
19610.83 0.38 1.48 0.46 0.27 0.01 0.00 0.01 0.25 0.13 0.78 0.81 1.48
19621.10 2.55 0.75 0.40 0.07 0.01 0.02 0.20 0.03 4.16 0.46 1.20 4.16
19631.86 1.45 2.17 1.40 0.83 0.00 0.00 0.00 0.13 1.46 1.72 0.16 2.17
19642.33 0.31 0.76 0.42 0.68 0.26 0.00 0.16 0.05 1.22 1.48 2.00 2.33
19650.95 0.39 1.05 1.13 0.01 0.00 0.00 0.43 0.00 0.28 1.14 1.38 1.38
19661.88 0.46 0.22 0.45 0.33 0.00 0.03 0.00 0.02 0.00 1.93 1.23 1.93
19672.64 0.53 1.28 0.99 0.49 0.25 0.00 0.00 0.06 0.67 0.75 0.45 2.64
19681.03 1.43 1.10 0.47 0.65 0.31 0.00 0.19 0.00 0.56 1.80 0.89 1.80
19691.92 1.27 0.95 0.83 0.01 0.10 0.00 0.00 0.00 0.85 1.14 1.95 1.95
19701.16 0.58 0.69 0.20 0.00 0.37 0.00 0.00 0.00 0.73 1.78 1.30 1.78
19710.47 0.20 1.61 0.25 0.48 0.18 0.00 0.00 0.09 0.33 0.82 1.10 1.61
19720.43 1.30 0.30 0.75 0.29 0.23 0.00 0.00 0.95 0.67 1.44 0.63 1.44
19731.83 1.39 0.76 0.45 0.05 0.02 0.00 0.00 0.20 1.88 1.32 1.82 1.88
19741.12 0.60 1.10 0.71 0.00 0.47 1.62 0.00 0.00 1.18 0.63 1.29 1.62
19750.40 1.46 1.26 0.82 0.10 0.08 0.02 0.26 0.02 0.86 0.55 0.37 1.46
19760.33 0.67 0.58 0.90 0.00 0.03 0.00 0.88 1.45 0.00 0.56 0.25 1.45
19770.73 0.40 0.47 0.07 0.73j0.00 0.00 0.00 0.35 0.08 1.12 1.23 1.23j
19782.47a1.13 2.21 0.75 0.00 0.06 0.00 0.00 0.35 0.00 1.56 0.67 2.47a
19791.53 1.24 1.30 1.15 0.12 0.00 0.19 0.00 0.03 1.71 0.99 1.18 1.71
19801.35 1.21 1.52 0.81 0.46 0.02 0.72 0.00 0.00 0.15 0.09 1.30 1.52
19811.73 0.50 1.18 0.40 0.25 0.00 0.00 0.00 0.45 0.92 2.50 2.00 2.50
19823.10 1.86 1.16 1.90 0.00 0.31 0.00 0.00 1.22 1.52 2.50 2.07 3.10
19831.80 1.92 3.01 1.97 0.41 0.03 0.00 0.12 -----z0.37 2.25 2.32 -----z
19840.28 0.00 1.12 0.46 0.12 0.40 0.00 0.17 0.14 1.05 1.27 0.75 1.27
19850.35 1.30 1.00 0.00 0.00 0.30 0.00 0.00 0.35 0.75 2.70 1.29 2.70
19860.80 3.00 2.20 0.90 -----z0.00 0.00 -----z0.34 0.27 0.55 0.60 -----z
19870.91 1.45 2.32 0.00 0.11 0.00 0.00 -----z0.00 0.39 0.65 -----z-----z
19880.90 0.58 0.61 2.61b0.22 0.26 0.00 0.00 0.00 0.04 1.26 0.77 2.61b
19890.30 0.44 1.44 0.22 0.06 0.25 0.00 0.14 1.50 1.44 1.40 0.00 1.50
19900.97 1.20 0.44 0.98 1.82 0.00 0.00 0.00 0.00 0.32 0.70 1.25 1.82
19910.42 1.19 2.11 0.20 0.40 0.50 0.01 0.19 0.00 1.88 0.30 0.92 2.11
19920.95 1.65 1.33 1.25 0.00 0.72 0.00 0.00 0.00 0.67 0.10 1.62 1.65
19931.51 1.09 1.37 0.22 -----z-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN1.21 1.09 1.18 0.82 0.36 0.16 0.07 0.08 0.30 0.77 1.10 1.06 1.98
S.D.0.69 0.64 0.65 0.63 0.46 0.21 0.29 0.17 0.45 0.80 0.73 0.59 0.60
SKEW0.79 0.74 0.65 1.09 1.75 1.40 4.67 3.25 1.73 2.17 0.43 0.30 1.68
MAX3.10 3.00 3.01 2.61 1.82 0.81 1.62 0.88 1.50 4.16 2.70 2.32 4.16
MIN0.28 0.00 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.27
YRS38 38 38 38 35 37 37 35 36 37 38 37 33