ICE HARBOR DAM, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(453883)

File last updated on March 29, 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
1957-----z-----z36.20u41.74c52.71 57.43 56.90 57.03 52.53 41.72b29.33 33.71 47.01c
195830.94 37.43 32.55 41.07 52.65 59.33 63.16 63.55 51.30 39.26 32.40 30.29 44.49
195926.23 29.57 35.00 40.20 43.74 54.93 59.16 56.35 50.03 40.94 26.23 26.16 40.71
196016.77 28.79 33.77 41.47 46.29 53.70 63.74 58.23 50.40 44.52 34.43 26.29 41.53
196129.90 38.08b38.61 41.62a48.65 58.77 63.45 62.29 47.07a39.45 25.13 28.42 43.45
196222.40a28.89 32.53a43.38a47.55 53.40 59.65 59.10 51.80 44.37a37.07a32.45 42.72
196318.87 30.54 34.87 41.17 48.10 54.13 58.84 60.16 55.60 44.94 37.47 27.81 42.71
196431.23 27.65c32.42 39.03 46.29 53.80 59.94 55.55 49.13 39.00 35.40 24.26 41.14
196530.58 32.32 30.48 43.93 47.13a54.40 60.43a61.35 48.70 44.45 39.03 28.61 43.45
196630.39 29.43 34.71 41.03 48.94 54.40 59.32 59.97 56.53 43.16 36.28a33.65 43.98
196735.48 33.39 34.26 38.63 47.74 56.03 62.58 63.29 57.33 43.97 32.87 28.33a44.49
196829.17a32.34 37.10 38.62a48.81 55.67 62.71 60.39 53.40 41.00 35.20 25.97 43.36
196916.74 26.54 33.06 41.77 49.10 57.97 57.97 56.03 52.00 39.52 34.40 31.74 41.40
197028.10 34.54 33.68 37.97 46.81 55.33 61.35 57.35 47.77 38.65 32.63 27.90 41.84
197130.45 30.00 32.00 39.03 46.97 52.17 58.90 63.35 47.00 39.65 34.70 28.72b41.91
197226.40a29.00a37.61 34.60 47.13 53.50 58.87 -----z48.83 40.26 34.27 21.87 39.30a
197322.42 29.36 36.23 38.80 45.97 53.50 58.58 58.77 51.03 43.23 35.73 34.74 42.36
197422.35 34.36 35.38b41.40 45.58 53.83 57.71 58.90 50.30 39.00a38.77 34.13 42.64
197529.32 27.89 33.19 36.47 45.19 50.97 62.00b56.50a47.64b44.16 33.07 30.48 41.41
197630.13a30.25a31.10 37.66a45.19 48.83 57.48 56.62b51.47 38.68 31.53 25.77 40.39
197723.35 32.39 35.23 42.27 43.87 54.38a56.74 60.61 48.90 37.58 30.90 30.71 41.41
197826.00 31.54b33.83b39.86b43.52 51.67 55.87 57.59b49.97a36.65 26.47 23.39 39.69
197911.74d27.50 31.97 39.41a-----z51.93 -----z59.48 50.43 45.16 31.75b33.07a38.25b
1980-----z-----z33.13 40.37 47.45 51.59a58.83a56.52 52.34a40.33a37.83 32.61 45.10b
198133.94 32.07a34.77 40.13 46.90a51.72a56.94 58.87 49.54b38.66b34.27 28.97 42.23
198223.23e28.58b32.50c36.14a45.76b53.97 58.71 59.77a51.13 41.00 31.93b29.27a41.00
198332.77a34.89 38.79b39.33 48.04c53.45a56.63a61.58 46.68b39.39 39.27 18.41b42.44
198426.90 31.83 37.10b40.27 -----z51.34a57.77 58.39 48.10a37.90a33.43 20.23 40.30a
198523.42 22.54b31.77a41.48a48.40a53.48a62.45 -----z47.30 40.13 -----z18.07a38.90b
198627.60a30.64 38.52 38.76a47.35 55.87 55.19 59.55b48.93a40.77 37.55a29.16 42.49
198724.57a30.59a36.47a43.67 50.74 54.93 59.77a57.77 53.00 38.06 35.83 28.39 42.82
198826.68 28.52 35.06 41.20 47.10a54.77 58.61 56.94 48.93b44.48 38.63 27.81 42.39
198931.30a19.11 33.48b42.43b47.53a56.24a58.93a58.53a49.29f41.39 37.40 30.52 41.53a
199033.31b28.15b34.95l43.78c47.65 54.61b61.32 61.32 54.63 41.68 38.07a18.94 43.95a
199123.03b33.68 32.84 40.33 47.10 51.60 60.45 62.26 -----z39.87a36.48a33.87 41.96a
199232.97 35.72 -----z43.83a47.79b58.93 60.73a59.33a49.20 40.90 36.10a26.70a44.75a
199317.79c23.48a33.65n42.37 51.87 -----z57.23a56.87 50.73 43.90a27.77 32.74 40.48b
199433.58 28.96 34.80a45.24a-----z54.00 62.58 63.10b53.83a42.52 34.10 30.35 43.92a
199527.81d33.30a33.53a40.73 48.57a53.93 60.90 55.81 52.67 41.41b37.93 30.35 43.08
199627.63a26.85c34.61 42.47 45.65 52.17 59.77 55.97a49.73 41.42 33.72a25.19 41.27
199727.19 31.54 37.06 39.37 49.13 54.24a58.43a60.84 51.66a41.94 35.77 31.55 43.23
199829.39 34.11a36.93a40.60 49.81 54.77 64.90 59.55 56.40 39.37a40.69a27.58 44.51
199933.87 34.39 34.68 36.27 43.70a53.23 55.97a56.68 46.67 38.47a38.72a34.93a42.30
200030.81 31.07a36.17a42.62a48.26 51.14b58.60a58.45b50.69a41.13 29.33 28.45 42.23
200129.57a28.21 34.61 40.20 47.13a51.60 60.86b60.67a51.03a40.03b36.46b32.26d42.72
200231.19d28.19a33.20a40.14b43.86c54.93a60.77 56.16 49.63 37.45 33.93 34.74 42.02
200334.69b29.89a40.50a41.87 47.35 54.93 61.73a60.23 52.53 45.90a29.37 31.55 44.21
200425.63a31.26b36.19d42.57 49.87 55.57 62.29 62.63a51.79a44.34b33.72a31.84 43.98
200526.84 24.04d37.19 -----z51.28b54.17 60.61 59.48b50.37 45.19d35.50 23.41d42.55a
200635.71j26.07 34.97a41.30 47.65 56.43 62.97a58.32 51.50 41.52 35.45a27.13a43.94a
200724.71 31.93 36.84 40.57 48.29 54.14a64.10a57.23 49.17 41.35 33.90 30.73a42.75
200823.61 33.24 34.00 35.90 48.64c52.21a60.47a57.60a48.80 38.87 37.53 21.97 41.07
200927.87 28.41a32.52 39.71b46.94 56.11b60.61c61.06 50.60 39.48 34.80 21.32 41.62
201032.59b32.89 34.32 39.27 45.81 53.83a59.32c57.80a53.10 44.00a34.20 29.43a43.05
201129.35 26.92b35.65 37.21b45.89c52.55a55.45 60.23 51.39b45.31b31.97 26.39 41.53
201226.90 31.56b35.48 41.77 46.27a52.52a61.29 58.39 -----z41.87 -----z32.33m44.00c
201327.45 -----z34.48 -----z-----z-----z-----z60.77 55.47 -----z32.33 20.81 38.55f
201429.55 -----z35.00 -----z47.14b54.20 63.06 61.35 50.45a48.33a31.60 30.42 45.11b
201531.35 33.14 37.65 -----z-----z59.24a62.26 61.06 50.50 46.03 33.47 31.45 44.62b
201629.32 33.24 36.52 44.83 49.73a53.72a60.23 58.83b49.83 46.52 39.47 23.87 43.84
201716.68 26.29 38.11c40.17 48.03 54.34a62.03 60.39 52.27 41.06 36.07 27.55 41.91
201833.55 31.11 32.19 41.73 52.57a54.68b59.71 59.87a50.52a41.29 32.84e33.03 43.59
201931.35 20.37a26.84 42.63 49.13 55.37 58.53a61.42 55.83a36.93a30.57 30.61 41.63
202033.19 30.17 34.03 38.93 48.32 54.60 59.19 60.32 52.87 44.61 34.40 29.87a43.38
202131.52 26.86 33.26 39.60 48.32 59.53 65.35 60.97 51.90 44.06 39.43 30.61 44.29
202226.71 27.21 37.26 38.03 46.42 54.07 62.77 63.34b53.17 47.52 31.43 -----z44.36a
2023-----z-----z-----z40.43 52.57a56.80 -----z62.10 -----z-----z-----z-----z52.97h
Period of Record Statistics
MEAN27.63 30.05 34.72 40.47 47.71 54.33 60.06 59.40 51.02 41.63 34.35 28.46 42.48
S.D.5.00 3.69 2.34 2.21 2.18 2.17 2.38 2.17 2.49 2.76 3.40 4.25 1.16
SKEW-0.96 -0.54 -0.27 -0.30 0.41 0.43 0.04 0.08 0.50 0.34 -0.56 -0.70 -0.05
MAX35.48 38.08 40.50 45.24 52.71 59.53 65.35 63.55 57.33 48.33 40.69 34.93 44.51
MIN11.74 19.11 26.84 34.60 43.52 48.83 55.19 55.55 46.67 36.65 25.13 18.07 39.69
YRS63 62 62 63 62 65 64 65 63 65 64 64 47