CHATHAM, MA

Maximum of Precipitation (Inches)

(191386)

File last updated on September 21, 2020
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
1972-----z-----z-----z-----z-----z-----z-----z0.46 6.12 1.49 1.66 1.51 -----z
19730.46 0.86 1.05 1.45 1.05 1.41 2.78 1.46 2.28 3.39 1.07 1.08 3.39
19740.78 1.30 0.45 1.45 0.90 0.86 0.46 2.00 1.29 1.93 0.88 0.94 2.00
19751.97 1.22 0.78 0.78 0.52 1.02 2.22 2.31 2.28 1.17 2.92 3.05 3.05
19761.78 0.94 0.96 0.52 0.32 0.51 2.04 1.60 0.97 1.10 0.50 1.48 2.04
19772.67 0.66 0.78 1.73 1.16 3.60 0.67 0.96 3.26 1.33 0.80 1.56 3.60
19781.95 1.26 0.85 0.93 2.25 1.18 2.80 1.99 0.67 1.05 0.68 1.86 2.80
19791.24 2.40 0.92 1.17 1.55 0.82 0.47 2.35 1.03 1.25 1.02 1.10 2.40
19803.13 0.56 1.40 1.33 0.76 0.87 0.59 0.71 1.22 1.22 1.24 2.32 3.13
19810.53 1.25 0.28 0.80 1.51 3.21 1.07 0.75 1.30 1.12 1.19 2.59 3.21
19821.05 3.50 0.77 1.19 1.42 1.53 0.69 1.13 4.52 3.58 1.43a1.08 4.52a
19830.54 2.65 1.96 1.55 1.42 1.36 0.75 1.88 0.67a1.62 0.92 1.34 2.65a
19840.82 1.31 2.24 1.32 1.69 2.20 2.73 0.87 0.46 3.18 0.31 1.07 3.18
19850.47 0.90 1.85 -----z2.48 2.42 0.76 3.17 1.35 0.55 1.35 0.48 -----z
19860.68 0.65 1.34 0.60 0.86 0.87 3.01 -----z-----z-----z-----z-----z-----z
19871.88 2.05 1.60 2.14 2.08 0.85 1.10 -----z2.43 1.02 -----z1.10 -----z
19880.96 1.47 1.06 0.74 0.47 1.17 1.02 0.82 0.52 2.48 2.78 0.28 2.78
19890.41 0.61 0.89 2.14 -----z0.74 3.81 0.57 1.64 1.22 1.10 0.87 -----z
19900.95 0.94 0.75a1.43 1.60 0.81 2.25 0.55 1.26 1.31 0.45 0.91 2.25a
19911.24 0.76 0.83 1.93 0.81 1.56 -----z0.79 1.77 1.45 1.54 0.78 -----z
1992-----z0.70 0.71 0.59 0.93 2.58 0.80 -----z0.56 0.65 -----z1.51 -----z
19930.77 1.46 1.65 1.13 0.61 1.14 0.90 0.20 1.07 1.22 1.06 2.77 2.77
19941.47 0.85 1.83 1.31 1.89 0.54 0.54 1.31 1.78 1.16 1.40 2.15 2.15
1995-----z1.04 -----z-----z0.98 1.27 0.82 0.98 1.50 1.84 2.05 0.96 -----z
19961.40 1.16 0.76 1.65 0.55 1.44 0.91 2.38 2.52 2.23 0.76 1.34 2.52
19970.57 0.92 0.84 2.05 0.74 1.89 1.72 2.02 1.52 1.04 1.45 1.87 2.05
19981.82 1.76 1.44 1.53 0.78 1.79 1.38 1.41 0.80 2.04 1.00 0.27 2.04
19990.96 2.09 -----z0.33 2.95 0.12 0.94 1.18 2.32 2.66 1.22 2.60 -----z
20001.47 1.13 2.41 1.10 0.68 1.42 1.61 1.58 -----z1.24 1.04 -----z-----z
20011.62 1.40 2.58 0.90 0.66 1.80 2.61 1.61 0.26 1.31 0.33 0.71 2.61
20021.57 1.21 1.41 -----z1.36 0.98 0.35 2.14 2.54 0.88 1.56 1.37 -----z
20030.93 3.12 2.52 1.86 0.65 2.38 0.64 1.13 1.50 0.91 0.97 1.28 3.12
20040.71 1.87 0.85 1.70 1.23 0.53 0.81 0.52 -----z0.81 1.58 0.89 -----z
20050.93 0.80a1.32 1.22 1.41 0.02 1.74 0.68 1.87 1.15b1.58 1.09 1.87c
20061.39 0.49 0.49 0.76 2.14 2.66 1.05 0.59 0.60 0.89 2.86 0.64 2.86
20071.09 0.49 1.55 2.65 1.77 0.26 0.72 0.65 0.86 0.60 3.94 1.10 3.94
20080.82 1.21 2.22 0.90 1.63 0.54 1.80 1.23 2.46 1.23 1.38 0.98 2.46
20090.76 0.66 1.19 1.25m0.94 0.57 1.40 2.98 1.35 1.59 0.67 1.28a2.98n
20101.71 1.26 1.89a0.58 2.41 0.72a0.70 2.08 3.35 1.92 0.76 1.08 3.35b
20111.42 1.19 0.85 1.73 0.46 1.16 3.72 1.39 0.50 2.29 1.36 0.94 3.72
20120.91 0.51 0.69 0.64 1.92 0.69 1.82 1.20 1.68 0.96 1.39 1.90 1.92
20130.37 1.72 1.99 1.51 1.25 1.92 2.45 0.35 0.91 0.69h1.56 0.79 2.45h
20141.01 2.65 1.15 0.87 0.60 0.95 2.60 0.96 1.01 1.75 2.53 2.79 2.79
20151.15 1.09 0.95a0.34 0.43 1.24 1.55 2.44 1.37 2.20 2.22 1.18 2.44a
20161.69 1.96 1.26 0.92 1.03 0.52 1.37 0.45 0.91 2.45 0.94 0.51 2.45
20171.15 1.04 1.64 2.27 1.33 0.63 1.65 3.71 3.09 2.59 0.72 0.66 3.71
20181.33 1.55 3.48d1.03 0.65 1.82 0.35 0.72 0.95 2.40 1.53 1.28 3.48d
20191.47 0.82 1.53 1.35 0.88 1.19 0.71 0.71 2.13 1.04 0.84 1.80 2.13
20200.55 0.89 0.76 1.35 0.37 0.37a0.42 0.75 0.46j-----z-----z-----z-----z
Period of Record Statistics
MEAN1.19 1.30 1.32 1.26 1.19 1.25 1.43 1.34 1.65 1.58 1.35 1.33 2.81
S.D.0.58 0.69 0.66 0.54 0.63 0.78 0.91 0.81 1.13 0.74 0.74 0.67 0.65
SKEW1.06 1.35 1.01 0.38 0.77 0.99 0.90 0.94 1.81 0.99 1.43 0.89 0.55
MAX3.13 3.50 3.48 2.65 2.95 3.60 3.81 3.71 6.12 3.58 3.94 3.05 4.52
MIN0.37 0.49 0.28 0.33 0.32 0.02 0.35 0.20 0.26 0.55 0.31 0.27 1.87
YRS46 48 46 44 47 48 47 46 45 46 45 46 34