BONNEVILLE DAM, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(350897)

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
1937-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z43.94n37.92e37.92k
193835.10a35.11 37.39 44.97a48.65 53.25f58.97 54.17a55.77 48.33a38.33 36.48d44.84a
193937.71 32.70a38.52 44.73 49.29 51.63 57.71 58.29 53.80 48.23 39.43 39.03 45.92
194032.68 37.90 41.10 45.80 50.00 55.13 58.42 58.39 56.33 50.43c36.97 35.23a46.53
194134.42 37.71 42.20a45.13 49.43a53.67 59.87 58.42 52.73 48.13 40.93 37.45 46.68
194226.90a35.39 37.32 45.03 47.97 52.17 60.10 59.87 54.57 48.17a38.43 35.74 45.14
194326.00 34.64 36.29 44.37 45.65 51.00 56.61 55.29 55.13 48.06 39.63 33.10 43.81
194431.00a33.31 35.10 42.47 46.58 51.13 56.68 56.61 53.27 50.58 39.73 32.84 44.11
194536.10 35.64 36.61 41.47 49.16 51.03 56.52 56.52 50.57 45.55 38.50 32.94 44.22
194634.65 35.25 38.35 41.50 49.13 51.03 57.48 56.35 53.00 43.26 34.60 35.68 44.19
194730.00 35.54 39.90 43.07 49.39 51.43 55.74 54.77 52.50 47.81 40.17 36.35 44.72
194832.74 30.59 36.45 40.97 47.00 55.33 55.16 56.39 50.70 45.26 37.97 29.87 43.20
194918.29 31.32 37.35 42.90 48.61 50.40 54.35 55.42 53.37 40.13 42.60 35.16 42.49
195019.20a32.29d35.81 39.87 43.84 52.67 54.19 57.00 51.50 45.19 38.97 37.87 42.37
195132.00 32.32 32.55 42.07 46.10 49.20 57.52 53.26 53.33 47.23 38.83 32.71 43.09
195228.10 33.17 36.32 41.50 46.45 51.23 56.90 57.03 53.37 50.84 35.00 34.32 43.69
195340.81 36.71 38.52 41.53 45.94 50.43 57.13a56.13 53.27 46.87 42.93 37.90 45.68
195431.42 34.96 34.29 41.37 47.32 50.70 53.97 56.10 53.23 44.45 44.47 33.00 43.77
195533.52 33.14 33.19 37.87 44.19 51.70 53.23 54.40a51.45a47.19 33.73 31.84 42.12
195632.94 27.69 36.61 42.61b49.29 51.17 57.68 57.07a52.33 45.13 37.13 35.55 43.77
195721.42 31.79 37.42 42.93 50.65 53.97 54.68 54.52 55.83 45.48 36.47 35.87 43.42
195836.06 41.14 36.00 42.33 49.81 57.33 59.94 58.84 52.69a47.29 39.07 36.69b46.43
195933.03 34.82 37.55 43.03 45.68 53.53 56.77 54.68 52.03 45.81 35.60 34.77 43.94
196027.45 35.17 35.52 41.17 45.93d51.93 56.84 55.29 51.97 46.84 39.33 32.52 43.33
196135.65 39.43 38.58 41.73 47.45 54.70 58.55 59.94 50.87 45.03 34.57b34.23 45.06
196232.29 35.11a35.74 43.41a45.33a51.67 55.55 56.61 54.80 47.45 41.93a37.26 44.76
196328.39 36.54 37.23a40.43 47.61 52.90 54.87 57.26 56.90 48.77 42.03 33.65 44.72
196436.19 34.38 36.63a39.07 45.29 51.63 56.52 55.42 51.63 47.40a38.27 31.13 43.63
196535.23 36.96 36.35 42.80 45.26 48.67 56.58 56.15k48.10 48.58 43.90 33.00 43.22a
196633.30d34.00 35.06 43.00 43.31b51.37 55.39 55.13 53.63 45.35 41.37 37.35 44.02
196739.52 37.07 37.40a39.93b45.87 54.97 58.26 59.39 56.24a47.81 40.77 34.06 45.94
196832.52 38.48 40.55 40.00 46.84 51.60 56.13a53.68 52.97 44.00 39.93 31.23 43.99
196923.90 33.46 36.06 41.23 47.29 55.67 54.48 52.45 52.00 43.90 40.60 36.00 43.09
197032.10 38.00 36.68 38.27 44.10 52.50 55.26 53.71 49.34a43.77 38.80 33.03 42.96
197133.84 36.18 33.23 39.20 45.48 48.77 54.55 56.43a49.40 41.48 38.00 33.06 42.47
197232.06 33.52 38.68 37.03 46.61 50.73 55.13 54.94 48.10 42.13a40.50 27.43a42.24
197330.13a35.50 37.17a40.87 46.35 51.60 54.29 53.74 51.50 46.06 37.60 38.55 43.61
197429.61 36.93 37.32 42.50 45.13 51.53 54.77 55.77 53.20 44.84 40.00 37.26 44.07
197532.71 32.36 34.87 36.43 45.68 50.87 57.23 54.26 54.57 48.10 39.63 37.00 43.64
197636.03a34.86a35.74 40.40 46.48 49.21a55.57a55.32 54.33 46.23 42.53 36.35 44.42
197729.10 37.39 37.97b41.67 44.52 53.57 55.82c59.97 51.50 47.06 37.86b38.26 44.56
197834.50a38.64 39.83a42.03 46.45 54.53 57.34b57.50a53.37 47.42 34.86a32.10a44.88
197921.45 32.74a39.31b43.60 48.74 52.63 57.77 57.00c54.50 49.10 38.77 37.74 44.45
198027.78d34.93b38.45 43.97 48.16 51.83 58.00 55.52 53.00 46.55 42.87 37.94 44.92
198139.03 36.07 40.90 43.33 48.06 52.03 56.26 58.87 51.97 45.52 42.50 37.16 45.98
198234.61 35.70a37.55 39.21a46.00 55.10 56.06 57.10 53.10a46.42 37.73 36.13a44.56
198337.97b39.32 42.71 42.31a49.03a53.03a56.58 57.70a50.92d45.64c43.17 28.76b45.60
198433.81 36.79 41.39 41.87 45.52 51.17 55.94 55.10 51.13 44.19 39.78c32.74 44.12
198531.03a31.19b35.25c43.00c47.93d52.54f59.17b55.26d50.13g45.28f30.73d26.10b39.96c
198635.46g36.46b41.79b41.62f47.64f55.14b55.17b58.22d51.96b48.97 42.55a35.15d47.27c
198733.07d39.36c41.35h44.38f49.88e53.45a57.43c55.46e54.59c49.24b44.90a35.48b47.29b
198832.79c36.46a39.21c43.96f47.70d52.67 56.83a56.84 53.79a52.47a42.69a36.72b46.20a
198937.39 27.43 37.80a44.62a47.53a53.82b56.30a57.77 53.03 47.81 44.14a36.55 45.35
199038.50a34.68 39.42 45.00a47.70a53.48a58.23 59.71 56.63 46.30a42.64b29.23 45.96
199131.61 40.44a37.10a42.50 46.67a49.96c57.53a58.71 55.70 47.53a41.77 38.00a45.63
199238.10a41.31 42.70a45.55a51.10a56.57 59.68 58.60a53.30 49.84 41.63 34.58 47.75
199328.45 31.79 36.58 43.70 50.70a53.17 56.06 57.23a54.60 51.03 34.93 36.60a44.57
199439.10a33.54 39.74 45.85d50.03a52.04c59.29 59.68 56.62a47.96d37.24a36.70a46.48
199535.45 38.22a39.52 44.00c51.15d52.71b59.43a55.42 57.90 47.69b46.03 35.87 46.95
199634.61 30.75a37.48 44.00a45.79b50.55a57.74 54.12e50.00 46.65 40.33 33.65 43.81
199733.28b35.85b-----z41.75b49.19 52.40 57.84f58.64c54.83 46.17a41.97a35.84 44.99b
199835.77a38.68 40.19 42.13 49.43a53.61b59.57a57.07a53.69a46.03b43.34a35.24b46.23
199937.94 36.61 38.00 39.10 43.71 51.63 54.41b58.33a50.92d45.39 43.43 38.47a44.83
200034.00a36.14a36.26 42.63 47.21c52.07a55.37a55.54c53.41c46.10a35.11c33.52 43.95
200134.50a33.50 38.59d39.41a45.68 49.62a55.17a56.45 52.26c44.48 41.53 35.87a43.92
200235.73a35.57 35.68 42.14a45.55b52.24a56.71 54.27a51.20 44.58 39.90 35.58 44.10
200338.48 35.04 40.35 41.37 46.35 53.53 56.10 56.45 53.73 48.84 37.11b36.06 45.29
200431.03a37.41b41.07c44.10 49.16 54.10 58.82c59.76b51.75b47.96e40.70 38.68c46.21
200534.13 33.89 39.97b43.43 50.61 52.71b57.89d56.97a48.35d48.19e38.96b32.57a44.81
200640.32c33.44a37.73a42.85c47.76b55.89c57.29c55.52d51.56c45.29c40.33 33.64c45.14
200731.77a37.20c39.80f41.83a46.63a53.67c60.79g56.28b51.17 44.68c36.59c34.06 43.39b
200831.63a35.39a35.69b37.31d46.90b50.40j56.39 57.45 52.33c44.57c42.87 30.89c42.86a
200932.29 33.11 35.65 39.57 45.13 55.03 57.07a58.61 54.37 44.48 40.20 29.58 43.76
201037.32 38.19a38.65 41.30 44.21c50.66a55.68 57.35 53.73 47.68 38.63 35.23 44.89
201134.71 32.93 37.68 39.53 44.03 51.57 54.84 58.03 54.57 48.58 37.63 33.16 43.94
201232.52 35.59 36.26 42.87 46.19 50.40 56.65 58.90 53.30 47.42 42.37 36.26 44.89
201331.48 36.11 37.77 42.30 47.55 52.70 57.39 59.58 55.87 43.26 39.23 30.77 44.50
201434.58 32.68 37.65 42.70 48.90 51.93 58.90 59.48 55.37 50.55 39.07 37.42 45.77
201536.65 40.75 40.81 41.87 49.45 56.47 61.06 59.52 50.50 50.71 38.93 35.35 46.84
201634.77 40.00 40.61 46.67 49.45 52.43 56.97 57.03 51.03 48.42 45.17 31.26 46.15
201725.94 33.70e38.90 42.03 48.16 53.43 55.97 58.52 54.90 44.71 39.43 33.10 44.07
201837.74 35.64 36.81 41.53 50.58 52.03 58.52 58.71 51.27 47.35 40.47 36.77 45.62
201935.84 29.61 33.55 43.60 48.77 50.30 55.03 58.19 54.63 42.06 38.67 35.61 43.82
202037.87 35.97 36.23 42.17 47.94 52.67 56.13 57.10 55.60 46.23 39.40 35.71 45.25
202137.23 35.38g36.16 40.27 47.97 56.70 58.87 58.32 51.63 45.42 42.87 34.87 46.39a
202231.97 34.00 39.29 38.33 45.19 52.76a58.13 59.61 55.57 50.26 35.30 29.48 44.16
202335.42 32.79 35.35 39.97 50.52 52.37 58.77 60.55 53.43 47.77 39.77 38.58 45.44
202430.77 35.72 38.44d-----z-----z-----z-----z-----z-----z-----z-----z-----z34.98i
Period of Record Statistics
MEAN33.01 35.23 37.69 41.98 47.35 52.49 56.83 56.90 53.05 46.73 39.71 34.72 44.61
S.D.4.49 2.78 2.20 2.11 1.97 1.87 1.67 1.89 2.05 2.30 2.89 2.75 1.21
SKEW-1.08 -0.19 0.18 -0.33 0.03 0.43 0.23 -0.11 -0.13 -0.16 -0.33 -0.80 0.20
MAX40.81 41.31 42.71 46.67 51.15 57.33 61.06 60.55 57.90 52.47 46.03 39.03 47.75
MIN18.29 27.43 32.55 36.43 43.31 48.67 53.23 52.45 48.10 40.13 30.73 26.10 42.12
YRS86 86 84 83 85 83 84 85 85 85 86 87 76