CHATHAM, MA

Average of Average Temperature (Degrees Fahrenheit)

(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-----z66.26 63.03 50.35 42.82 38.44 52.18g
197331.85 31.30 40.47 45.47 51.90 62.55 66.85 69.13 62.67 54.90 44.12a39.84 50.09
197434.26 31.02 37.15 46.15 51.39 59.83 67.69 68.90 63.18 50.42 44.68 37.89 49.38
197535.95 32.50 36.02 41.90 53.82 61.17 68.60 68.39 61.30 55.76 49.27 36.68 50.11
197628.94 35.34 39.43c48.47a54.40 63.18 68.06 67.29 62.37 51.42 40.13 30.40 49.12
197724.42 29.77 39.94 46.52 54.48 60.37 68.24 68.50 61.43 53.31 46.67 34.92 49.05
197830.19 27.54 34.37 43.47 51.87 62.30 65.37 68.79 59.58 52.10 45.47 35.82 48.07
197933.27 23.57 38.73 44.22 55.77 60.60 67.53 65.85 61.63 52.18a48.72 38.39 49.21
198031.87 28.47 36.18 45.92 53.65 60.52 68.85 69.95 63.83 52.10 42.12 31.40 48.74
198123.03 35.11 36.79 47.17 52.85 63.68 69.69 67.15 61.87 51.24 44.38 35.60 49.05
198225.31 32.11 37.34 42.85 53.12b58.50 68.26 65.94 61.68 53.68 47.40i40.87 49.06a
198335.05b35.00b39.47 45.22 52.32a62.50 69.98 68.31 65.95a54.84 46.98h34.76 51.22a
198431.52 37.19 33.32 43.70 54.66 62.92 67.34 69.81 61.03 54.97 45.52 40.71 50.22
198528.30i33.50b38.78a-----z53.85 61.50 67.29 67.27 63.55 55.50 48.03 33.95 52.32b
198632.86b30.98 38.69 45.70 -----z61.46c66.97 -----z-----z-----z-----z-----z46.11f
198732.48 29.45 37.06 45.02 52.35 62.35 66.13 -----z62.69c52.21g-----z37.00 47.17c
198829.55 33.38 37.50 44.80b52.73 60.85 68.15 70.52a62.12 50.76 46.50 34.05a49.24
198934.42 31.18 36.55a44.34a-----z63.15 67.16 67.44 63.25 54.48 43.98 24.92 48.26a
199036.74 34.59 37.87 44.68 51.90 60.98 67.40 70.00 62.87 57.08 45.87 40.62b50.88
199133.06 34.95 39.97 47.06c57.23c64.25 -----z69.42 61.97 55.44 46.30c37.09d49.70a
1992-----z32.69 34.79 41.88 51.34 62.08 65.37 -----z61.35 52.10 -----z37.19 48.76c
199333.47 28.38 36.00 44.30 54.55 62.47 69.05 68.11 62.75 52.45 46.02 36.34 49.49
199426.47 29.34 37.42a47.33 52.40 63.80 70.61 68.08 61.95b54.11 50.38f40.14b50.15a
1995-----z32.16i-----z-----z50.98b61.45a69.60a69.52a61.92e58.00a44.31d33.38b56.14d
199632.12c31.31c34.93c44.81a52.71b62.77 66.53a66.69b62.62 55.37a42.07a41.77c49.47
199730.64b35.93a37.02d43.98d52.69 61.73b70.45b68.02a64.06c53.55a43.50 37.40b49.91
199836.45b36.67b39.17a46.78a54.32 60.80 69.09c68.21b64.13 54.02c45.43a41.09c51.35
199933.05a34.68c-----z46.08 55.18 64.98 72.70c68.73 65.41c52.83b46.56e39.37 52.69a
200029.59d34.26b41.55a46.46d54.20c63.18b66.93b67.35a-----z53.91c44.00b-----z50.14b
200132.38c32.70w39.04q44.48a54.82a65.79b67.38c69.90a63.72a55.91b48.41a41.92 54.47b
200236.82a35.62b40.03b-----z53.55b61.62a69.82a71.42a65.21f53.86b44.45 35.28a50.25b
200326.67a30.85k36.12a41.48a51.68 60.52 70.02 70.08 63.92 53.33b46.67 37.50a50.72a
200422.55a30.80a36.77a44.60 54.39 61.62 66.63 67.94 -----z54.50c46.56c38.34i48.63b
200529.85a32.05 34.18 45.72 49.82 61.97a68.66 70.98 67.30 55.50a47.53 35.40 49.91
200637.65 32.15a36.58 47.13 54.08 63.45b70.79 70.13 63.70 54.15 50.28 41.93a51.83
200734.34 26.91 36.44 43.67 55.94 63.43 69.32 69.52a65.73 58.50a44.42 35.02 50.27
200833.97a34.02 37.73 46.23 53.11 66.47 72.16 69.00 66.66a51.80i43.35 37.29 50.91a
200927.03 31.33b36.26 44.09m53.70d58.71d66.32 70.10 62.50 51.73 48.98 34.32 49.18a
201029.71 31.50 40.80a48.22 56.63 64.52a71.58 68.77 64.87 54.58 44.72 32.90 50.73
201129.35 30.25 36.94 46.47 53.31 62.58 70.60 69.18 64.78 56.97 48.87 40.48 50.81
201235.03 36.05 41.76 48.55 55.31 64.90o71.79 70.82a64.38 56.31 44.63 40.56 51.38a
201331.27a31.84 37.21 44.72 54.17b63.37 71.34 68.16 62.20 52.88j43.22 35.79 49.39a
201428.52 30.48 32.31 43.97 53.31 62.08 66.94 65.98 65.28 56.85 44.12 41.52 49.28
201530.32 24.21 33.17b45.77 56.82 61.17 69.53 71.24 67.83 54.84 49.58 46.60 50.92
201634.34 34.62 41.47 45.28 55.06 63.77 70.92 72.97 66.58 56.73 47.03 38.08 52.24
201736.74 36.36 34.73 47.65 53.27 62.87 68.47 68.73 64.47 60.48 46.07 33.61 51.12
201831.03b37.64 37.48h44.21b54.94 62.18 68.57a72.24 66.08 53.68 44.10 36.21 51.90a
201931.84 30.95 35.79 46.47 51.94 61.87 71.59b70.21 64.07 55.63 43.48 36.25a50.01
202035.69 36.59 40.52 43.25 52.73 63.29b70.48 71.24 65.12i-----z-----z-----z51.72d
Period of Record Statistics
MEAN31.59 32.30 37.39 45.28 53.59 62.28 68.78 68.96 63.51 54.33 45.55 37.13 50.02
S.D.3.72 3.26 2.34 1.71 1.60 1.61 1.87 1.65 1.84 2.21 2.27 3.72 1.00
SKEW-0.59 -0.59 0.00 -0.15 0.14 0.12 0.17 0.12 0.43 0.33 0.13 -0.45 0.36
MAX37.65 37.64 41.76 48.55 57.23 66.47 72.70 72.97 67.83 60.48 50.28 46.60 52.24
MIN22.55 23.57 32.31 41.48 49.82 58.50 65.37 65.85 59.58 50.35 40.13 24.92 48.07
YRS45 45 44 44 46 47 47 46 44 44 42 45 26