ROSS DAM, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(457185)

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
1960-----z-----z-----z-----z-----z-----z-----z-----z47.80 42.94 33.17 30.65 38.64h
196131.48 32.79 32.52 37.50 42.24b49.87 53.61 56.32 45.50 38.13 30.50 28.61 39.92
196228.07b29.86 28.87a37.24a41.48 47.30 50.87 52.27a49.30 43.19 37.45a33.13 39.92
196323.94 33.25 33.45 37.93 43.23 49.93 52.61 55.94 52.60 44.32 34.52a31.97 41.14
196432.29 30.79 32.32 35.33 40.26 48.17 51.77 51.61 47.77 42.52 34.77 26.72b39.53
196528.84 30.89 28.90 37.47 41.06 48.43 54.39 55.81 47.23 43.61 38.43 29.71 40.40
196627.67a30.39 31.74 36.90 42.52 48.57 52.30a54.26 51.40 40.71 36.73 34.48 40.64
196731.94 32.00 30.90 35.30 43.42 51.07 53.31b56.68 51.83a42.57a36.24a29.52 41.23
196827.90a31.62 34.94 35.23 43.42 47.57 54.13 53.52 49.03 40.26 36.53 29.56d40.31
196923.36i26.11a30.52 36.60 44.61 52.23 51.39 52.13 49.45a41.73a37.97 33.58 41.48a
197028.80a33.39 32.74 34.93 42.13 51.07 52.61 53.35 45.77 40.19 34.30 28.48 39.81
197126.73a31.00 29.32 34.37 42.23 46.43 51.77a55.84 45.87 40.16 35.27 25.61 38.72
197226.19e27.61a33.33a34.13 43.06 47.60 51.39 54.13 44.67 40.26 36.17 26.47a38.75
197325.52 31.07 33.52 36.70 41.63a46.73 53.37a51.94 51.52a41.00 32.63 34.20a39.99
197427.03 32.50 32.00 38.14a41.00a48.53 51.57c55.00 51.63 43.16 37.52a33.68 40.98
197528.32 25.11 30.42 34.14a41.06 48.41a55.16 51.00b50.03 42.31e31.23d30.97 39.01
197631.03 30.14a29.20a35.07 41.65 46.28a50.90 53.06 50.86a42.45 37.47 34.48 40.22
197728.10a33.76c33.42 38.13 42.00c50.97a52.10 58.47a48.72a40.50a30.76a28.32 40.44
197829.06 31.54b35.26 37.93a42.38b50.73d54.73i54.00 48.69a43.00 30.93c27.69b39.20a
197921.00a26.79 32.53a36.83 43.77a47.66a52.93a55.52 50.73d44.19 34.61b33.52b40.01
198024.14c31.43a32.48 39.00 45.03 48.86a52.96c52.31b49.00a42.58 37.00a32.29 40.59
198135.29 32.07 34.94 37.89c44.77a46.70 54.04d56.97b49.46f40.83b37.03 31.21b41.07a
198227.16 28.07 32.07a33.33f42.13 52.14b51.81d53.93b49.75f41.50a31.93a30.83a39.16b
198333.48 33.92b35.70a37.43 45.77a49.64b52.14b54.93a46.14b40.57a37.70 23.59b40.92
198431.39 32.79 36.17a-----z40.35e48.14a52.69b54.55 46.43 39.65 33.42d25.74 40.12a
198528.60a27.11 31.10 37.00b44.19d48.07a55.27a53.41b45.93 39.57a24.96d27.31b38.54
198632.68c28.18 36.19 37.93 43.43a51.90 52.32 57.74 49.20 44.27a34.50 30.71 41.59
198729.52 33.39 35.39 40.27 45.32 50.60 55.17a54.39 51.40 44.68 39.90 30.19 42.52
198828.00 31.38 34.35 38.97a44.40a48.90 52.84 54.58 48.73 45.90 36.43b31.61 41.34
198930.16 24.79d31.19 38.46b43.26 51.30 53.55 54.29g50.79a41.97 37.57 35.03 39.83a
199031.97a26.04 33.67a40.53 44.63a49.50 56.55 57.06 52.53 39.42 36.40 26.48f42.57a
199125.32 34.25 31.06 37.30 43.87a48.20 53.48 55.55 50.62a41.26 37.10 34.28b41.02
199232.42 34.93 37.90 40.40 46.58 54.07 56.35 55.77 46.70 44.39 35.97 26.77 42.69
199321.03 -----z34.35 38.40 48.77a50.17a52.84 54.68 49.57 45.13 31.70 32.35 41.73a
199436.39 28.96 34.53a41.50 46.42 48.83a55.87 55.83b51.93 41.74 31.31a29.26 41.88
199529.97 31.68 32.84 37.74c46.65 50.73 56.42 50.94 53.43 41.61 37.03 30.43a41.62
199629.82c27.83 32.55 38.57 41.39 48.10 55.03 55.16 48.47 41.35 32.83 25.06 39.68
199728.86b30.43 32.58 36.00a44.19 47.66a52.42 56.52 51.13 41.87a37.80 32.39 40.99
199828.45 33.68 35.48 38.13 46.48 52.63 58.33a56.65 52.24a42.87 37.30 29.13 42.62
199932.19 30.89 31.84 35.17 40.03 47.63 51.23 55.26 48.57 41.23 37.50 33.40a40.41
200029.71 31.59 33.90 38.80 43.35 48.31a53.19 52.81 48.21a42.20a33.45a29.52 40.42
200132.74 29.04a34.26 36.80 42.65 48.33 53.65 55.06 50.83 40.90 37.20 30.71 41.01
200231.52 29.79 28.30a36.70 41.58 49.10a53.94 54.77 49.57 41.65 37.80 34.16 40.74
200334.00 32.25 33.47a38.27 42.87 51.13 55.65 55.29 50.93a44.74 31.13 31.30a41.75
200428.39 33.28 35.26 39.83 46.13 51.07 57.03 57.77 47.90 43.34b36.47 34.26 42.56
200528.32 30.68 35.19 38.86a48.58 50.87 54.68 55.80a48.45a44.10 35.10 31.97 41.88
200633.97 28.89 32.37a38.10 43.03a51.43 56.35 55.33a50.73 42.90 33.28a30.58 41.41
200728.19 32.50 34.61 37.47 43.74 49.40 56.03 54.10 49.47 41.10 34.47 30.23 40.94
200826.71 30.86a32.03 33.57 43.94 47.90 53.65 55.00 48.50 41.45 37.87 26.57a39.84
200928.10 29.07 28.16 36.00 41.87 51.17 57.00 55.52 51.00 40.94 35.77 27.39 40.16
201034.00 34.61 35.06 37.93 42.26 48.63 53.84 55.35 50.83 43.23 32.40 30.45 41.55
201129.71 26.64 32.26 33.87 41.52 48.40 50.90 54.06 51.80 42.06 31.90 30.23 39.45
201228.50a30.83 31.26 37.77 42.84 47.17 54.13 56.65 50.90 42.58 36.77 31.58 40.91
201329.03 32.71 33.26 37.83 45.39 49.73 55.87 57.16 52.93 41.42 35.77 27.61 41.56
201433.19 26.82 32.52 37.40 45.45 49.47 56.48 58.13 51.73 46.23 34.20 32.58 42.02
201533.06 35.96 37.10 37.83 48.90 55.03 59.23 57.91i48.27 46.52 34.03 31.65 42.51a
201630.94 34.83 35.77 43.20 47.90 51.17 55.65 57.03 49.77 42.94 40.00 25.23 42.87
201723.68 27.36 33.23 38.23 44.61 50.73 55.10 58.74 52.83 40.61 35.13 30.03 40.86
201832.19 27.46 32.77 38.03 48.52 49.93 56.97 58.03 49.50 42.65 36.93 30.55 41.96
201931.90 21.00 30.19 38.87 47.23 50.80 55.16 56.90 51.80 38.84 35.43 32.32 40.87
202028.32 30.41 30.94 36.40 44.58 48.43 53.32 54.23 53.57 42.42 34.60 33.00 40.85
202131.48 28.18 32.61 36.40 43.39 52.33 57.48 56.90 49.40 40.71 36.03 26.76b40.97
202227.85d29.25 34.10 33.33 41.29 49.13 55.16 59.42 53.33 46.45 30.63 24.81e40.40
202331.32 28.89 30.23 35.07 48.81 50.73 56.48 51.87a51.60 44.55 35.50 34.35 41.62
202430.21c32.48 32.70d-----z-----z-----z-----z-----z-----z-----z-----z-----z31.80i
Period of Record Statistics
MEAN29.49 30.44 32.87 37.33 43.83 49.55 54.10 55.13 49.79 42.25 35.07 30.33 40.82
S.D.3.15 2.89 2.16 1.92 2.31 1.85 2.01 1.96 2.18 1.85 2.71 2.87 1.02
SKEW-0.42 -0.62 -0.13 0.18 0.62 0.52 0.33 -0.15 -0.37 0.35 -0.95 -0.37 -0.12
MAX36.39 35.96 37.90 43.20 48.90 55.03 59.23 59.42 53.57 46.52 40.00 35.03 42.87
MIN21.00 21.00 28.16 33.33 40.03 46.28 50.87 50.94 44.67 38.13 24.96 23.59 38.54
YRS63 63 64 61 63 63 62 61 62 64 64 63 54