HEADWORKS PORTLAND WTR B, OR

Average of Average Temperature (Degrees Fahrenheit)

(353770)

File last updated on March 28, 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
1899-----z-----z-----z45.63d48.32 55.72 64.68 58.69b59.87 47.77 48.27d39.85g53.62d
190040.77c40.52f47.74b49.36b54.40b62.05b64.06 58.94 56.17 48.52c43.88e40.21j52.59b
190136.13 38.26e41.80k45.10 53.47b55.78 60.74 64.11 -----z54.33b44.90e38.92g50.31c
190235.28f40.27 42.91c-----z-----z59.42 62.89 63.05 56.59c52.50 41.59c37.18i52.40d
190338.08e34.56b-----z-----z-----z60.65 61.74 62.60 54.90 -----z-----z37.58a50.02e
1904-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z38.50i-----z
1905-----z-----z-----z50.72 -----z-----z-----z-----z-----z-----z-----z-----z50.72k
1906-----z-----z-----z-----z53.82 57.90 70.76 66.60 60.50 52.52 44.32 41.31 55.96d
190732.39 42.26g41.82 48.90 56.97 59.65 65.26 61.35 59.73 55.05 46.13 40.64b51.63a
190839.65 39.00 43.13 50.15 49.56 57.75 67.56 63.81 57.70 49.65 46.10 36.90 50.08
190931.24 39.23 43.82 46.75 51.37 59.18 60.18 61.19 59.73 51.66 43.00 33.35 48.39
191034.60 35.71 49.02 50.70 56.82 57.88a65.34 65.81 59.72 55.11d43.42d41.73 51.32
191136.93b40.04b47.72d50.21b53.21b55.23d68.07a62.39 49.10 48.00 40.78 37.18 49.07
191235.74d40.97 39.13 43.63 53.89 61.47 63.52 58.33b60.03 50.96d45.05a39.47a49.35
191334.60b37.52 41.66 48.68b-----z60.53 63.89 63.60 58.09a50.53 43.59a37.79 49.13a
191439.94 40.71 47.79 50.75b55.67b57.48e64.02 65.74 55.98 55.21 44.34a34.31 51.00
191537.06 42.09 49.29 51.84a53.56 58.66b63.61 67.10 59.41b52.43a42.62a39.07a51.40
191629.86c39.62a42.56 49.25 49.31 58.04b60.82 64.28a58.82 49.65a40.78 35.02 48.17
191735.52d38.48 39.15 44.88b50.47 58.27 66.19 -----z59.84a53.79 47.63 44.60a48.98a
191842.15 38.54 43.40 49.38a52.23 64.33 64.10 63.29 63.08 53.60 44.47 39.08 51.47
191939.16 39.27 44.77 49.43 54.55 57.98 66.45b66.15 59.52 47.97 42.30 33.62c50.10
192039.02 42.00 44.31 45.22 52.58 59.52 65.35 66.40 57.57 -----z43.83 41.81 50.69a
192138.35 41.64 45.89 50.12b55.26 68.72 62.42 64.79 58.28a54.32a47.86a37.46c52.09
192233.53a36.36 39.59c45.40 54.98b62.40 67.31 64.81b61.23 52.36b40.90a33.79b49.39
192339.12c36.96 42.89 51.97 54.08a59.77 65.56 67.37 62.38 54.28a48.58 39.66 51.89
192437.17a45.32a44.26 50.33 58.76 61.52 64.73 63.47a60.43b52.50a43.22a33.88a51.30
192541.10 43.68 45.21 51.85 58.67a61.33a65.78b64.27 60.43 54.17b44.04b43.24b52.81
192640.38b46.04b51.48 57.38a55.11c61.05a66.62a66.05a57.50a55.53b49.40d41.10g55.14a
192738.53a41.88 43.40 48.41a52.59c61.75 64.57a64.89 55.83 52.67d46.48a36.17b50.60
192836.34 40.29c46.60 47.02a57.40e57.64b64.46e62.98f59.05a54.48b46.76a38.14b49.83a
192934.28a35.57 44.82 47.17a56.24 60.10 65.98 66.35a61.13 55.68 43.65 42.32a51.11
193028.80a42.88 48.79 54.00 53.43c59.88 63.87 67.05a61.40a51.84 45.98a39.74 51.47
193141.67a42.65b45.69 51.82 59.50 60.55 65.69 65.61 58.26a53.18a42.28a37.65 52.05
193236.56 37.28 44.35 49.28 54.06 62.67 62.11 64.27 62.10 54.98 46.67 35.81 50.85
193336.74 34.57 43.70a49.00 50.48a57.92 64.92 65.60 55.37 54.08 45.45 43.84 50.14
193443.73 47.21 52.77 56.48 57.71b59.72 62.61 66.40 59.90 55.45b47.33 41.26 54.21
193535.40a43.23 40.10b48.42 55.02 60.67 64.63 64.37 63.08 50.82a40.23 40.55 50.54
193640.60b32.95 42.31 53.02 59.05a61.45 64.32 64.90 60.25b56.24 45.22 40.68 51.75
193728.08 36.34 44.19 46.25 55.44 61.82 65.95 63.34 60.48 55.85 46.55 41.81 50.51
193839.00 40.18 43.13 50.43 56.16 61.07 67.63 62.52 63.50 54.05 41.00a39.89 51.55
193940.26 37.70 45.06 51.87 56.90 56.78 65.47 65.81 60.58 52.55 46.43 42.73 51.84
194038.42a43.64 47.79 51.90 59.48 62.82 64.68 66.40 62.20 55.44 42.88 41.18 53.07
194141.19 45.66 51.21 52.55 56.06 59.47 69.45 64.47 57.95 52.35 46.32 40.00 53.06
194235.58 39.93 44.11 50.83 53.24 57.45 66.90 66.48 62.17 54.35 43.22 39.21 51.12
194333.18 41.54 43.53 52.43 52.58 58.12 65.73a62.71 63.40 53.23 46.03 39.53 51.00
194438.11 40.07 43.63 49.28 55.61 59.12 65.55 64.58 62.52 56.66 43.53 38.92 51.47
194540.56 41.17a41.74 46.78 56.19 59.28 66.18 64.73 58.05 52.11 42.53 39.44 50.73
194638.84 40.59 43.47 48.93 57.02 57.98 64.81 64.15 57.95 47.53 40.42 39.74 50.12
194733.79 43.55 47.69 50.33 58.21 57.62a62.73 61.42 60.76a51.31 43.77 40.05 50.94
194838.50 37.41 41.58 45.65 53.66 62.58 61.65 61.35 57.57a49.50 39.80 34.16 48.62
194927.80a35.25 42.71b50.00 56.32 59.03a62.42a63.13a60.93a46.17a49.05 36.95a49.15
195026.34 35.64 40.50 45.52 51.02 57.60 64.23a66.37 59.65 50.08 42.28 43.63 48.57
195136.18c39.46 38.45b50.83 54.14b61.32 64.10a62.83b60.95 47.55a42.52a34.53a49.40
195234.33a38.44b41.68 50.67a55.60 57.97 66.18 65.60 63.24a57.85 41.60 38.03a50.93
195344.02a41.88 43.23a47.83 52.53a55.48 64.15 63.87 61.45 54.18 46.68 41.23 51.38
195436.15a41.29 41.63 47.43 55.40a55.33a61.03b60.72a58.85 51.59c47.59a39.52a49.71
195536.85 38.82 39.34 43.81a51.15a58.42 61.07c63.33a59.28a51.74b38.55a37.30a48.31
195637.22b33.41 40.12a49.93a56.58a56.81a65.42a62.82 59.52 48.89 42.83 39.31 49.41
195730.65 38.25 43.24 49.57 56.11 59.13 62.60 61.37a63.73 51.30a43.68 41.27 50.08
195842.29 47.06b43.77 49.38 60.90 63.97 69.76 68.39 61.18 56.26 45.64a45.06 54.47
195939.95 39.73 44.44 49.15 53.08 60.05 66.42 62.87 57.35 52.98 45.35 41.76 51.09
196035.97 41.82a44.29 49.65 52.50 61.07 66.94 62.05 60.48 53.42 44.76a41.56 51.21
196144.56 43.77 44.81 47.63 54.61 64.73 67.65 68.66 57.88b51.58 42.09a39.68 52.30
196238.10 42.30 41.71 51.41a50.68 59.55 64.07a63.60 61.18 53.55 46.29a42.92 51.28
196334.65 48.26a44.56 46.68 55.52 57.71a62.11 64.68 65.22a55.39 45.98a42.18 51.91
196440.63 41.79 43.05 46.23 52.39 57.63 63.94 62.85 59.15 56.55b42.72 37.23 50.35
196540.62a41.48 46.53 50.88 52.15 60.02a66.98 66.35 59.57a57.42 48.47 38.45a52.41
196639.21 41.32 44.20a50.40 55.47a59.42 63.50a65.87 62.27 53.56 46.65 42.29 52.01
196741.06 43.46 42.16 45.87 55.24 62.88 66.26 71.60 65.63 54.60a47.70 37.69 52.85
196838.70a47.84 48.08 47.58 55.24 59.85 66.05 63.44 61.07 51.53 45.68 36.31 51.78
196933.10a39.23 45.52 48.80 57.89 61.27 62.50 61.58 61.08 52.50 46.73 41.77 51.00
197040.45 46.68 45.47 45.19a54.69 62.93 65.19 66.02 58.02 52.08 45.17 38.74 51.72
197138.66 41.70 41.10 48.52 56.32 56.50 65.65 66.77 57.90 50.55 43.70 37.58 50.41
197236.44 41.57 46.58 45.14a56.63 59.88 65.85 66.81 57.77 51.50 46.07 35.27 50.79
197338.22a45.28a44.73 50.03 57.23 59.85 66.68 62.55 62.38a51.71 40.73 43.24 51.88
197436.53 40.59 45.06 48.55 52.00 60.63 63.66 65.37 65.35 54.82 45.90 41.74 51.68
197539.76 39.73 42.84 45.15 54.50a58.15 64.84 61.19 64.48 51.72a43.65 42.92a50.74
197641.24 40.81 42.63 48.72 56.03 57.62 63.74 62.58a62.23 54.42 49.32 42.08a51.79
197739.29 46.23 43.00 51.97 51.03 62.28 64.02 69.00a58.48 53.82a42.88 42.02 52.00
197841.39d44.20 48.15 48.52 52.89 62.33 65.24 64.61 59.07 56.74 40.67 36.13 51.66
197932.23 39.04 47.81 49.20 56.47 61.00b65.65 64.27 64.52 55.80a45.58 44.34 52.16
198035.45 43.07a43.92 52.75b54.27 57.22 65.69 62.97 62.45a57.21 47.78 43.91b52.22
198146.13a44.23 47.82 50.82 55.29 59.03 64.34b68.98 62.72 52.72a48.22 41.85 53.51
198237.52 41.18 44.25a47.11b54.26b62.55 63.75a65.97a61.43b54.65d43.36a40.93a51.41
198344.85a46.33a48.58a51.14a58.50c58.83a62.59b65.43a59.58 53.97 46.53 34.76b52.59
198441.68a45.05 48.83a47.43a53.87a58.67 66.53 66.34 61.68b50.97 44.71a37.15 51.91
198539.35a38.96a43.03 51.09a55.20a61.90a69.92a65.27a58.08 52.31 36.42 36.67a50.68
198643.95 42.12 51.27 48.90a55.76 64.10 62.80a69.18 58.48 56.84c46.72 41.87a53.50
198739.44e44.69d46.89 54.58 57.67a63.82 64.85a68.37 -----z58.95 47.92 37.79 53.18a
198838.21 44.57 45.22a50.36a53.78d60.05a65.16 66.44 63.43b58.53 45.50b41.45 52.72
198939.84 34.95 43.86b53.80 56.24 62.70b63.76b64.19 64.27 53.53 47.58 41.23 52.16
199041.74 39.52 47.40b53.02d54.35a61.27b68.95a68.74 65.38 51.95a46.45 33.50 52.69
199139.50 48.80 44.47 48.38a51.78a57.70 68.45a67.78a65.93 55.98a46.70 43.48 53.25
199243.90 48.83 52.18 53.72 62.07a64.98 68.58 68.85a62.03a55.60a46.26a38.57c55.46
199336.22b40.86 47.17a50.68 60.46d60.47a61.47a66.77 64.97 58.18c41.65 41.05 52.50
199443.55 40.64 49.06 52.17a58.82a59.65 68.69 67.78a66.10 54.08a40.50 39.94 53.42
199543.03a45.93a47.23 49.62a58.23a60.92 68.18 65.08 64.55 53.65 50.07 42.67b54.10
199640.23 42.18a46.55 51.86a53.69 61.55 70.44 69.39 60.48 54.10a43.88d40.32a52.89
199740.48 43.21 45.02a49.96c60.10b-----z66.27c68.68c64.31c52.40b49.71a40.68 52.80a
199842.48c44.91a46.90 51.23 53.87 61.47a68.58 68.69 64.07a53.81 46.02b37.87a53.32
199941.71 41.81a43.74 49.27 52.55 59.05a65.23 67.42 63.88 55.06 48.60 43.03a52.61
200039.24 43.90 44.67a52.78 54.27a61.65 65.08a64.60 61.43 53.62c42.38a41.33a52.08
200142.12a41.88 46.08 47.40 57.53 58.47 62.94 65.87 62.27 52.21 47.23 40.73 52.06
200239.48 42.98 42.62a49.38 53.08a61.17 66.53 65.56 62.05 52.73 48.67 42.74 52.25
200345.31 43.61 46.48a47.74a55.03a63.33 67.16b67.16c63.72a56.18 43.36a40.95 53.34
200438.92a43.67 49.27a53.63 56.18a61.35 68.15 67.50 59.82 52.03 45.43a42.48 53.20
200541.58 44.23 48.82 50.02 57.69b58.33 66.38a66.84 59.18 54.40 44.38 39.37 52.60
200642.95 40.83a43.67b50.34a57.10 62.40a67.35 65.48b62.22 51.87a44.50a40.98 52.48
200738.10a43.20 47.87 49.91b54.54f59.36h66.89l64.96g58.83c50.21c42.06c36.17p47.17e
200836.14b42.05a41.77e44.66e54.72h56.98f65.37h65.64f61.88d51.19 47.45b34.38c44.94d
200938.44 41.00 40.40 47.18 54.90 60.20 68.48 65.28a62.78 51.13a44.15 36.32 50.86
201043.90a45.04b45.66 47.53 50.29 56.12 63.08 63.98 60.42 53.44 42.80 40.45 51.06
201139.68 38.18 41.66 43.87 49.87 56.75 61.44 64.39 63.52 52.90 43.00b38.03 49.44
201239.98 41.36 40.84 48.70 53.71 56.40 63.13 66.24 62.26a52.98 46.55 38.98 50.93
201336.66 40.88 45.45 48.45 55.08 60.65 65.03 67.26 61.40 51.69 44.97 34.82 51.03
201441.34 38.09 46.47 50.15 56.84 58.12a66.95 67.98 64.37 56.95 44.48 42.77 52.88
201544.42 47.36 50.48 49.83 56.37 65.00 69.43a67.79 59.73 58.00 43.62 40.97 54.42
201641.16 46.69 46.44 54.43 57.45 61.33 63.34 66.87 59.08 52.87 49.18 35.68 52.88
201734.06 40.16 44.61 47.85 56.05 61.13 65.48 69.56 62.55 51.37 44.18 38.77 51.32
201843.16 39.12 43.90 49.83 58.31 59.13 68.97 67.00 59.18 53.53 46.28a40.45 52.41
201941.18 33.91 43.13 48.93 56.77 58.20b63.94 66.61 58.83 49.00 45.97 41.24 50.64
202040.68 41.79 42.48 50.23 55.73 58.03 64.65 64.87 63.83 53.03 43.78 41.87 51.75
202142.06 37.66 42.95 49.63 54.26 64.42 65.69 65.74 61.00 49.74 46.10 38.39 51.47
202239.94 40.21 44.84 44.02 50.74 58.98 67.06 69.23 63.80 56.77 40.35 36.58 51.04
202340.23 38.00 40.26 45.82 57.94 60.10 67.10 68.69 60.40 53.92 46.02 43.77 51.85
202438.11 42.14a44.85d-----z-----z-----z-----z-----z-----z-----z-----z-----z41.70i
Period of Record Statistics
MEAN38.52 41.24 44.73 49.34 55.01 59.97 65.21 65.21 60.73 53.18 44.77 39.55 51.51
S.D.3.81 3.43 2.95 2.66 2.63 2.38 2.25 2.45 2.70 2.54 2.59 2.85 1.40
SKEW-0.76 -0.06 0.38 0.10 -0.05 0.47 0.15 -0.27 -0.57 -0.20 -0.32 -0.39 -0.10
MAX46.13 48.83 52.77 57.38 62.07 68.72 70.76 71.60 66.10 58.95 50.07 45.06 55.46
MIN26.34 32.95 38.45 43.63 48.32 55.23 60.18 58.33 49.10 46.17 36.42 33.35 48.17
YRS121 120 120 121 118 120 121 119 121 121 122 117 107