CHELAN, WA

Average of Average Temperature (Degrees Fahrenheit)

(451350)

File last updated on December 4, 2021
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
1891-----z-----z-----z-----z-----z-----z74.84 74.52 62.87 53.81 -----z30.43a59.29g
189221.76 -----z45.31 48.23 58.66 68.72 71.03 72.98 63.57 51.31 -----z-----z55.73c
189319.29 20.57a34.34 46.92 57.42a61.27 72.78b73.55 59.58 46.87 35.46b31.40 46.62
189424.56 25.77 38.87 49.82 60.03 65.60 75.24 76.47 60.65 48.08 41.10 28.10b49.52
189524.19b33.48 41.53 51.15 56.31 66.07 70.73 71.44 55.78 51.02 36.68 31.85 49.19
189628.08 35.69b38.44 47.82 53.40 65.93 74.94 70.85 60.25 50.60 27.30c35.00a49.02
189727.68 30.21 33.42 52.80 62.44 64.62 68.02 74.73 61.20 50.35 34.22 25.73 48.78
189821.95 35.16 39.81 53.68 60.92 64.47 73.69 75.61 62.07 -----z35.65 23.50 49.68a
189925.68 26.88 40.27 48.50 57.21 63.37 73.11 65.45 65.55 49.44 45.05b31.29 49.32
190033.03 31.50 44.95 54.35 60.66 69.60 73.77 68.27 61.27 49.50 34.25 39.02 51.68
190127.22a30.75 42.02a-----z59.07a61.65 69.90 75.50 59.22a55.66 41.32b32.77 50.46a
190228.27 33.12 41.15 49.02c58.95a63.50 68.55c73.29 60.90 53.81b36.61b26.16 49.44
190327.00 28.83m37.50a48.50 58.05 68.78a69.47 70.61 60.07 50.70c35.97a24.92 50.14a
190427.27 28.74 35.26 50.82 58.08 66.67 74.23 75.26 66.21a49.87a41.15 32.59b50.51
190529.22b29.02a44.23a52.23 57.73 64.90 74.40 71.55 63.52 45.94 38.00a30.00 50.06
190628.66 34.78a39.58 55.13 59.39 62.45 80.44 74.08 64.45 54.50a40.08 31.18a52.06
190714.69 30.23 38.63a49.07a61.77 64.59a72.34 67.59o63.12 57.00 41.64b32.56d47.79a
190829.72b29.91 41.82 51.40 56.61 66.52 74.84 73.15 64.20 51.06 42.27 29.08 50.88
190917.50b31.00 41.32a49.55 58.66 65.97 70.23 70.92 65.78 51.19 38.63 22.68a48.62
191024.87 24.80 45.15 52.80 62.06f64.87 73.31 68.56 61.87 52.74 38.05 31.79 48.98a
191123.03 27.52 42.85a50.77 56.29 66.68 73.48 71.06 59.41c50.74 34.30b27.83b48.66
191223.52 33.53 39.89 51.15 61.26 68.27 71.76 68.82 60.60 48.35 40.15 32.47a49.98
191322.62a24.68 37.66 51.10 58.44 66.32 71.95 73.00 62.62 47.81 39.86a31.68 48.98
191431.05 29.23 43.16 52.73 61.60 65.27 76.02 74.61 60.27 52.63a39.68 23.48 50.81
191524.35 34.29 45.40 56.02 58.08 67.36a72.89 78.44 63.02a52.79 34.77 27.10a51.21
191614.03 27.69 38.90 51.60 56.53 63.68 67.65 72.56 63.50 50.95 34.40 23.26 47.06
191722.55 26.91 34.60 46.05 58.56 64.30 74.52 75.56 65.33 54.55 42.58 31.80a49.78
191831.40 29.48 -----z-----z-----z-----z-----z-----z-----z53.41b38.74a32.57c37.12g
191932.92s29.11 39.73a50.81a55.98b62.81c71.22f71.32f59.95a48.31b35.25b27.40k47.74d
192027.18 35.41 -----z-----z-----z63.50k76.59d72.88b60.31f47.71e38.30e31.77c47.12e
192127.38c30.81a41.00a47.81d60.92k-----z-----z-----z57.71d53.12k35.48a23.73g40.03f
192217.70a20.84 36.27 47.11g56.66f70.83 75.81d72.50b64.67f53.36i-----z-----z48.99f
1923-----z24.54b40.53a53.24g59.84 65.82 75.55 74.47 67.52a52.31b40.13d29.25c53.00b
192422.19 36.91b43.03 50.27b66.21c67.80 76.33a74.45c65.50a51.76 37.11b25.02b51.38
192528.83b37.91 44.15a53.45 61.95b69.38 78.55a72.53b63.82 50.80a37.72a36.34 52.95
192629.00a38.84 47.95 55.48 59.62a72.67 78.95a73.57b58.20 52.23a41.15d28.15 52.98
192725.55 32.28a41.12a49.36a56.95a69.29a76.39 73.42 60.93b50.24 37.43 24.18a49.76
192828.47 35.40 43.77 48.22 63.06 67.83a76.78a72.94 64.98 50.78a40.03a28.45b51.73
192916.40a20.34c43.38b48.20 59.74 65.68 73.62a75.87a62.18 52.98 36.93 30.67b48.83
193013.89 34.43 44.05 54.90 58.53b64.65 75.05 74.77a64.37 48.87 35.71a28.84 49.84
193131.20a33.10c42.06 52.08 61.86b66.05a75.85 74.28a62.57b52.08f35.52 26.12b50.97a
193222.88a28.70a40.95 53.02f58.57a69.45b69.52f71.80a63.22a52.13a41.14a27.62g49.87c
193330.02b23.98c41.17b50.80 54.52 65.35 73.03 73.82a58.97a52.10 41.02a34.63 49.95
193433.88g38.02b46.90 57.11b61.33b69.52c72.52f74.76f57.67f53.69e42.43b31.83a50.10d
193525.71b33.69a39.38a48.05a59.42 64.57g71.16 69.20d64.80 49.48b33.38b30.03l49.43b
193628.95a14.67b39.30a53.03 62.57c65.72a72.85a72.74b62.10e52.13a33.38a31.09b49.04
193711.47a24.02 39.77 47.33 57.92 63.70 74.30a68.84 64.42 53.89 37.83c31.29 47.90
193827.42 29.80 39.63 51.62a60.27 68.15 75.98 69.98a66.52 51.55b36.93b29.90b50.65
193932.10 28.50 41.40 52.63 60.27 64.95 73.90a74.12a64.53 52.15 40.57 36.66 51.82
194030.39d33.86 45.47b52.22 62.25c71.08 73.86c73.32 66.63 51.71e32.90 32.21b52.16
194126.70a36.06a46.67b54.82 59.48 65.22 74.94 69.65 58.38 51.82 42.64b33.22a51.63
194225.82a33.50a42.22a52.33 56.27a63.52b74.44 74.41c65.62b52.21 35.44c29.58a50.45
194319.24d33.52a40.08 53.52 56.44 63.30 72.19d70.07c65.70 52.08f39.55 30.82a49.49a
194428.21 33.24 41.22a52.25 60.48 66.83a73.29 68.77 63.14b53.37 36.78a26.66 50.35
194529.87a35.72a41.58e48.52a58.81 65.16a74.64b72.59b60.46b52.64b35.07g29.30c51.75a
194626.70h29.20f39.86j48.48g62.55 63.66a71.53a70.93c60.65 46.26d31.65c28.34f58.17e
194723.60f31.57a44.13a53.05a63.95 64.00 70.57a67.89 61.73b49.00b37.33a29.40j54.32b
1948-----z-----z-----z-----z-----z66.88 67.55 65.07a59.87 46.62a36.10 19.87a51.71e
19499.77a19.84c38.57a51.52 62.47 65.45 71.26 71.11 63.10 48.71 42.72 29.24 47.81
19508.68 27.55 37.66 46.22 55.45 63.90 72.16 71.82 64.63 47.39 36.83 32.82 47.09
195127.95 30.07 35.06 50.22 57.47 64.88 72.47 71.68 62.02 48.30a35.40 22.87 48.20
195219.81 29.78 38.58 50.40 59.48 64.77 73.11 72.52 65.57 55.66 36.40 33.69 49.98
195337.18a38.88 43.90 48.78 57.18 61.53 71.82 69.67a63.20 52.92 42.07 36.69 51.99
195425.52a35.22a38.53a45.60 58.76 62.08 69.34 68.40 62.00 48.85 44.13 31.24 49.14
195528.93b29.95 34.71 45.82b54.83a65.95 68.71 71.42 63.32 49.98 29.53 25.00 47.35
195628.58 21.67 37.10 51.70 62.11 62.55 74.08 72.20a63.23 50.58 35.52 31.33a49.22
195715.97 27.16 39.31 51.17 63.97 67.08 70.50 68.39 64.60 48.44 38.33 34.70a49.13
195832.28a40.19a41.40 49.35 66.03 70.25 77.47 77.58 62.72 51.60 35.08 31.38b52.94
195927.42a29.73 42.17b51.84a55.90 65.25 74.08a69.57a59.63 49.74 35.00a32.27 49.38
196025.09c34.04a39.60a49.78 56.45 66.45 77.69 70.44 61.90 51.62a37.70 27.55a49.86
196130.75a38.46a42.41c50.21a57.73 70.75 75.16 75.65 60.53 49.34 33.77d28.74 51.12
196225.29b36.58j38.42a52.80 55.98 65.70 72.26 69.39 62.64a51.21 40.76a34.08 51.68a
196325.48c37.12 43.39 47.60 58.50 66.83 70.27 71.29 66.18 53.16 39.83 29.29 50.75
196430.19 31.60 40.60 48.82 57.76 65.63 71.27 67.92 58.98a49.65 37.85 25.18 48.79
196529.42a33.57 38.37 52.23 58.44 66.02 72.68 71.89 60.22 52.00 41.05 30.83a50.56
196626.45 33.96 40.40a51.45 60.68 63.27 69.94 71.40 65.77 49.89 41.42 34.77 50.78
196734.92a39.59 41.73 46.10 57.80a68.67 73.97 76.52 67.72 50.77 40.79a28.89 52.29
196827.85 36.19 44.69 48.42 58.69b65.90 74.55a68.06 63.05 47.56 39.27 26.22a50.04
196915.53 26.20 38.90 50.18 62.48a70.63 71.63 70.79 62.13 48.61 38.92 31.63 48.97
197025.90 34.95 41.15 47.77 59.39 70.27 75.82 71.44 58.63 48.50 36.47 26.39 49.72
197128.29 34.00a36.81 48.45 60.90 63.00 72.69 76.60a58.78 48.82 38.68 23.87 49.24
197223.50 30.76 42.63 47.22 59.32 64.75 69.16 72.02 58.00 48.52 39.83 27.42 48.59
197325.73 33.62 43.81 52.32 59.97 65.75 74.10 73.73 62.85 50.32 34.73 34.23 50.93
197426.90 37.66 40.66 49.78 55.73 68.25 69.87 73.18 64.42 51.13 40.37 33.81 50.98
197526.63a27.29 37.73 47.65 58.26 65.43a75.23 68.63 62.90 49.74 37.85 32.00 49.11
197629.76 35.05 38.58 48.95 57.53 62.27 71.23 67.48 64.88 50.53 38.85 31.56 49.72
197723.98 37.34 42.74 53.25 56.77 69.90 71.73 76.18 59.98 49.29 36.80 30.02 50.67
197829.11 34.29 43.40 49.70 57.73 68.68 73.29 70.08 59.93 50.50 33.78 25.40 49.66
197917.11 28.63a42.47 50.03 62.15 69.77 74.82a73.82 65.08 53.29 34.77 33.50 50.45
198019.70a30.59 40.47 51.92 58.90 63.03 70.81 67.61 61.02 49.69 38.67 30.61 48.58
198135.50 34.52 44.39 48.77 57.82 61.20 69.34 75.02a62.58 48.24 39.82 29.66 50.57
198225.83a32.09a41.39 46.88 57.47a69.28 69.71 70.55 61.87 49.21 33.38 28.79 48.87
198333.25a36.43 44.42 49.67 59.47 60.95 62.52a69.33a55.52 49.74d41.14a20.35 48.57
198429.28a34.38 44.40a48.17a54.98 63.26a72.23a71.45a58.83a46.77a36.05a20.14c48.33
198523.84 24.22a-----z52.58 60.55c66.15 77.86c71.41d58.80c49.22d23.46e21.55a48.15a
198628.88c31.63b43.76d49.97a58.60b71.23 71.24 77.36b60.23 52.47 39.47a30.54c51.28
198727.85 36.82 43.90a54.37 61.81 69.28 71.50b72.60a67.73 53.47a42.52 28.38b52.52
198826.70a34.34 43.98a53.18 59.02 65.41a73.41b72.71b62.90a55.52a39.68 29.92 51.40
198930.53 25.31a38.32 52.10a58.68a69.68 72.26 71.03a64.48 51.81b41.55a32.89 50.72
199035.08a30.43a43.55 55.07b57.63 64.80c75.62b73.66b67.05 48.81b41.76c22.88b51.36
199124.45b38.81a40.68 50.52 57.24 62.31a73.23 72.97b64.68b48.44 36.84a34.48a50.39
199232.19 38.16 45.29 52.12 61.98a72.05a69.80a71.65 60.55 51.55 38.37 24.56 51.52
199321.23a28.87a37.85a48.22 64.13a64.42 66.74 69.98b63.22a52.73a32.74a31.15 48.44
199433.17b30.78a43.35a53.57 60.68 65.03 76.66 72.02 65.86a51.53 33.22 30.29 51.35
199528.45 35.76a40.40a50.08 61.71 66.10 73.37 67.24 65.57a49.73 39.05a31.00a50.71
199625.70c30.69 41.59c50.26a56.26 65.37 74.00a71.27 60.52 50.10a36.00e19.39q51.07a
199725.83e30.72a39.66 48.80 59.50a63.88a70.16 73.03 63.66a49.95 40.65 31.81 49.80
199828.53 38.41 44.34 50.40 60.30c66.17a76.76 74.67a68.91a52.18 43.10 29.55 52.78
199933.00a36.52 41.53 49.42 56.58 62.31q71.13h73.15a63.08 51.18 43.55a36.56 48.46b
200028.98 33.73a42.76 53.37 58.63a65.98 72.73a72.94 61.07c51.08 34.55a27.84 50.31
200131.82a31.89a43.06 50.08 60.60a64.05 72.73c75.02 67.05 51.50 41.83 32.58a51.85
200232.98b35.48 38.53 50.59b56.98a68.90 74.17a72.43b64.33a50.63 40.21b35.34 51.71
200333.50 36.25 43.71 49.90a57.89 70.02 77.13 75.60a66.62 55.61 36.34a29.58 52.68
200427.72a34.45 46.53a54.50 59.45 69.53 75.94 75.42a62.81a53.79 39.98 33.61 52.81
200527.06 36.27 45.44 51.91a61.45a64.92 73.47 75.20a63.75 53.87 37.00 25.52c51.32
200634.10a34.57a42.24 50.50 59.27 67.42 76.53 74.02 63.80 53.29 37.27 27.94 51.75
200726.11 35.61a43.57a50.70c60.53 65.14a76.63 71.92 65.23 49.60 37.88 29.65 51.05
200822.40 34.50 42.94n-----z63.60u64.62b73.00d71.55l64.05j49.73e40.36p25.33p48.85g
200925.17j31.72e38.39c48.45k59.72f68.58 75.18c73.83k66.26m48.86c40.44d24.71g50.53f
201034.46f38.54c43.44e49.61c55.14c63.98b73.13a71.19d61.54e52.71 35.43 30.82 52.32a
201129.19 31.16 39.89 46.10 55.00 62.78 66.84 73.21 66.25 51.69 37.27 30.52 49.16
201227.74 34.69 39.91i50.67i57.98 62.14p74.05a75.53b64.95 51.87 41.48b32.48c51.20c
201324.38b34.95 43.27 51.23 60.31 65.30 77.15 73.79c67.20g50.10a39.58l27.76n53.39c
201432.95l30.62 43.26 52.35 62.50 64.12 76.31 74.56 62.93 53.98 36.07 30.53b53.39a
201530.55 39.14 47.11 50.10 60.87 74.18 75.85 72.68c61.38 54.77 37.30 29.52 52.79
201628.55 35.22 44.00 56.66a61.73 67.18 71.77a73.61 62.20 49.89 44.73 23.13 51.56
201720.87 26.02 40.00 48.57 58.98 65.93 76.19 75.15 63.58 48.18 37.20 26.52 48.93
201830.42 30.83a40.52 48.93 65.06 65.36a73.24b72.03 61.22a51.24 39.16a33.00 50.92
201930.37 21.73 35.65 51.17 62.40a68.50a72.35 74.65a62.47 45.97 37.17 30.07d49.37
202030.21 36.43a42.40 50.69a60.02 65.58 72.81b75.84f65.43 51.10 37.64a29.92 49.29a
202131.53a29.48 42.13 51.73b59.73 72.47 80.42 74.30a63.22c49.73 40.73 -----z54.13a
Period of Record Statistics
MEAN26.34 31.85 41.28 50.67 59.25 66.18 73.24 72.35 62.72 50.87 37.94 29.72 50.22
S.D.5.39 4.85 2.95 2.44 2.47 2.72 2.88 2.59 2.61 2.23 3.40 3.82 1.47
SKEW-0.98 -0.80 -0.31 0.21 0.32 0.49 -0.37 -0.31 -0.18 0.15 -0.79 -0.44 -0.08
MAX37.18 40.19 47.95 57.11 66.21 74.18 80.44 78.44 68.91 57.00 45.05 39.02 52.98
MIN8.68 14.67 33.42 45.60 53.40 60.95 62.52 65.07 55.52 45.94 23.46 19.87 46.62
YRS121 125 123 119 122 124 125 123 124 126 125 118 97