DIABLO DAM, WA

Average of Maximum Temperature (Degrees Fahrenheit)

(452157)

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
1914-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z37.25w-----z
191537.23 45.36 58.10 66.07 69.50q72.62n78.31o84.83g69.47o56.08e42.40 38.87 49.16e
191625.42 41.48 46.68 58.43 64.28b74.40 74.32 81.03 70.57 59.39 41.40 33.52 55.91
191740.19 40.46 46.26 54.33 65.71 70.30 82.13 83.19 68.83 60.87 53.20 39.10 58.72
191837.58 37.43 46.13 65.23 64.42 79.48a80.68 74.58 80.17 57.24b45.00o36.47l62.29b
191936.63d38.88c48.45 59.67 65.52 71.41a81.35 80.23 71.83 54.45 43.80 33.65 57.16
192035.86j45.22t48.89m56.17f64.58 70.73 82.48 82.16 66.10 53.16 45.47 39.48 63.02d
192137.26 42.75 50.03 54.37 68.32 72.50 76.55 77.90b64.53 59.03 43.10a35.35 56.81
192232.94 36.93 44.52 54.54b66.93a80.17 81.87 78.00 70.17 58.77 42.07 30.35 56.44
192335.68 38.68 46.97 59.93 65.50a71.63 80.81 80.53a73.62a59.40a46.21b37.23 58.02
192435.35 46.14 51.94 57.53 73.68 74.17 79.43a77.90 72.43 55.71 40.58d33.25c58.18
1925-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1926-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1927-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1928-----z-----z-----z-----z-----z74.00p80.55 78.61 71.33 54.84 44.53 36.52 61.06f
192928.48 36.21 48.00 55.30 65.94 69.00 77.35 77.48b72.13 59.55 42.87 36.24b55.71
193024.33a41.18 52.52 62.47 64.47a70.53 79.50a81.84 68.80 56.77 43.20 38.81 57.03
193140.97 44.19a49.32 61.23 69.23 70.07 80.23 79.65 64.80 58.00 41.63 -----z59.94a
193235.35e39.29a48.29 59.40 67.03 -----z76.69o76.48 -----z-----z-----z-----z54.31f
1933-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
193440.83a46.46 53.00 -----z65.42 70.31a71.48 77.42 63.27 57.06 45.40 38.35 57.18a
193534.81d45.68 43.65 55.73 67.10a72.08f76.45b74.61 71.46d53.07c39.80 39.35 54.70a
193636.77 26.93 39.55 58.00a66.71 70.73 75.35 78.10 69.03 62.55 47.07 38.29 55.76
193726.84 34.28c51.00a51.40 67.45 72.70 79.52 76.29 71.17 60.90 45.47 40.52 56.46
193836.48 39.61 45.74 54.33 65.39 72.83a80.68 75.71 76.27 57.48 41.30 38.32 57.01
193937.97 37.81a47.06 59.20 67.68 68.70 79.81 83.13 72.37 55.61 48.33 43.97 58.47
194039.45 43.10 51.42 57.20 66.68 72.67 74.68 76.26 73.63 58.26 42.17 41.19 58.06
194138.26 47.89 57.55 62.27 61.87 66.67 82.29 75.42 61.30 56.06 48.59a39.81 58.16
194239.94 44.14 48.32 60.83 60.94 64.47 79.13 79.81 73.43 61.45 42.93 40.45 57.99
194335.11m-----z49.42s58.38a58.65 71.14a75.81 74.35 75.34a63.61 49.72e38.53a62.84c
194438.97 43.45 46.97 58.40 65.45 70.34a77.55 74.32 72.86a63.00 47.23 39.40a58.16
194541.06 44.00 46.90 51.07 68.32 68.30 79.26 79.29 67.38a59.45 41.69a38.53a57.10
194639.77a41.57 49.03 54.20 69.16 66.83 76.45 78.06 69.17 53.45 41.33 38.39 56.45
194736.16 46.36 54.13 60.53 68.84 68.00 75.00 74.48b70.37 -----z44.90 41.00 58.16a
194839.68 39.86a47.58 52.87 61.61 73.55a73.61 70.35 69.10 58.52 43.79a34.84 55.45
194932.97 38.39 49.87 60.27 70.06 69.67 74.35 75.84 73.00 53.77a51.34a38.19 57.31
195022.58 38.89 44.48 53.07a60.90 71.97 78.19 79.23 73.90 53.74 45.43 43.77 55.51
195136.39 41.11 43.16 65.17 64.90 76.73 81.29 78.48 75.47 55.23 45.43 35.19 58.21
195232.94 43.38 47.68 60.13 68.58 67.50 80.06 78.00 75.80 68.32 48.37 40.29 59.25
195346.13 47.04 49.52 57.13 67.45 66.10 81.77 76.68 71.63 60.87 49.00 42.08g61.21a
1954-----z44.57 49.00 50.07 66.42 65.17 73.32 70.23 68.03 56.10 51.03 40.45 57.67a
195538.68 39.57 40.77 51.97 57.13a68.90 69.94 79.19 69.87 56.42 39.67 36.97 54.09
195636.74 38.07 43.87 62.10 72.32 65.20 79.90 78.26 70.50 52.39 45.60 40.13 57.09
195730.55 40.46 48.23 59.27 71.90 71.87 73.77 74.35 79.43 59.03 47.00 42.61 58.21
195841.81 47.43 52.42 58.87 76.29 77.13 88.58 83.45 67.27 60.90 42.73 41.42 61.52
195937.74 40.82 46.61 56.67 62.81 70.20 80.45 73.39 64.13 57.55 45.43 40.26 56.34
196036.84 43.66 48.84 56.20 60.87 69.40 84.32 71.97 70.13 59.68 44.90 40.77 57.30
196144.16 43.68 42.83s54.00e63.97 76.70 79.68 85.00 67.70 54.52 42.77 38.10 59.11a
196238.58 45.68 46.94 60.00c58.52 71.03 75.26 72.52 71.60 58.45 48.53 41.68 57.40
196335.03 48.89 49.16 55.20 68.00 67.43 71.19 77.65 74.57 58.35 44.23 40.77 57.54
196440.35 44.72 45.71 52.07 61.74 67.73 74.94 71.39 66.50 59.52 44.63 36.13a55.45
196538.06 42.14 52.42 58.83 63.19 72.13 -----z76.81 69.90 60.81 48.93 39.42 56.60a
196637.97 -----z49.06 58.63 67.81 68.63 73.81 77.26 71.50 56.81 46.73 41.35 59.05a
196739.84 44.39 45.97 55.07 63.97 75.43 76.68 86.41b76.97 55.74 48.37 38.39 58.94
196837.45 48.79 50.32 53.30 66.32 69.30 78.74 73.97 70.17 53.71 46.50 36.76b57.11
196927.35 41.43 52.35 55.80 71.19 77.10 75.52 73.55 67.07 58.00 48.23 41.06 57.39
197037.16 49.18 51.65 51.10 65.58 77.73 78.84 79.03 65.70 57.19 45.63 36.32 57.93
197136.32 42.14 43.65 55.37 67.81 64.67 79.16 82.94 66.60 55.16 43.80 34.68 56.02
197234.97 41.72 47.45 51.73 67.29 67.83 76.45 80.55 65.23 59.71 46.47 34.45 56.16
197336.13 45.82 50.10 58.13 67.39 69.17 78.29 74.71 71.77 54.58 40.77 42.26 57.43
197436.94 42.43 46.42 55.00 58.65 73.57 75.45 81.48 78.37 62.29 45.97 42.10 58.22
197538.39 37.35e44.65 51.30 61.48 63.27 79.88f71.42e77.00 55.00 42.50 40.29 52.97a
197640.32 42.97 45.16 57.83 66.19 67.80 74.42 70.23 74.13 60.45 49.43 43.16 57.68
197739.39 49.04 46.29 62.07 62.00 74.67 74.23 83.29 67.13 57.81 39.00m38.87 59.52a
197838.45 44.64 52.32 56.59a62.77 76.13 77.97 75.77 62.50 61.00 41.83 35.77 57.15
197932.61 40.07 53.58 56.07 67.23 72.73 79.00 78.48 72.23 61.45 45.97 42.00 58.45
198034.00 44.38 46.39 63.40 64.55 66.83 76.48 73.39 67.80 61.90 46.20 40.58 57.16
198144.19 45.46 55.52 53.90 64.10 64.37 73.29 83.26 70.20 56.65 47.90 39.35 58.18
198236.23 39.89 49.97 54.07 63.77 74.27 72.23 75.35 69.50 57.26 40.73 39.71 56.08
198343.06 45.86 53.10 60.43 70.29 67.53 70.55 76.68 66.40 56.87 45.80 32.06 57.39
198442.06 44.28 52.16 54.37 58.10 67.47 78.42 76.65 66.43 53.84 42.37 -----z57.83a
1985-----z39.11 -----z55.17 65.48 71.77 86.03 77.06 66.03 53.00 33.37 35.68 58.27b
198643.03 41.32 53.03 53.10 64.45 75.93 71.26 85.13 67.27 62.58 43.47 38.68 58.27
198738.10 45.54 50.84 62.20 67.65 74.77 -----z79.35 75.83 66.29 48.77 38.03 58.85a
198837.35 44.86 48.68 58.83 63.94 70.83 77.39 77.16 71.24a62.73a44.10a40.13 58.10
198938.71 35.93 45.77 61.63 62.81 74.60 74.39 73.55 76.97 58.29 45.53 42.32 57.54
199040.65 39.04 52.19 60.93 62.65 68.40 81.68 79.65 75.70 52.26 46.70 31.68 57.63
199136.19 46.86 47.26 57.87 61.61 66.00 77.13 77.87 74.70 60.39 45.57 41.58 57.75
199241.06 48.31 61.61 60.50 71.16 75.80 75.16 80.00 65.33 57.71 44.67 35.42 59.73
199330.19 41.96 52.10 54.20 70.63a66.90 67.23 75.68 75.03 61.58 41.40 39.52 56.37
199444.55 38.50 52.68 59.87 68.06 68.73 80.27a77.94 74.47 57.10 38.93 36.84 58.16
199538.35 44.71 50.10 58.40 71.61 72.10 78.10 70.68 77.50 53.42 47.37 39.29 58.47
199636.06 42.59 49.45 56.20 57.84 70.13 82.13 78.74 65.20 54.77 41.33 32.65 55.59
199736.60a43.18 -----z55.50 67.06 67.33 74.03 80.26 -----z54.19 48.77 39.55 56.65b
199837.23 45.96 50.19 59.50 65.06 71.27 80.55 80.29 77.50 59.37a45.83 36.97 59.14
199940.52 40.93 46.16 57.17 61.06 64.60 75.13 77.39 71.23 57.58 46.27 40.16 56.52
200037.90 44.03 48.23 60.30 61.13 70.90 73.74 75.74 67.87 57.68 42.69a38.26 56.54
200141.19 42.71 50.39 55.27 65.03a67.20 75.68 77.16 70.73 54.23 46.37 37.45 56.95
200238.71 41.50 42.57a54.53 61.16 73.43 78.16 78.19 70.43 58.94 48.47 40.58 57.22
200342.35 46.04 46.42 54.63 63.65 74.87 82.00 81.26 74.07 59.97 42.17 39.23 58.89
200436.52 45.97 51.71 64.33 65.68 74.97 81.65 79.32 65.23 58.39 46.07a41.29 59.26
200537.71 47.50 52.97 60.50 69.35 66.00 76.94 81.06 68.77 56.90 43.27 39.35 58.36
200641.32 41.93 48.77 58.40 66.35 72.83 80.26 78.52 73.90 59.10 42.30 38.71 58.53
200737.97 43.86 47.87 54.97 67.00 68.53 79.16 75.35 69.53 53.87 45.07 37.83a56.75
200835.61 42.59 45.32 50.67 64.74 66.83 76.84 76.45 70.27 56.26 47.97 34.65 55.68
200937.45 42.79 43.00 56.50 65.97 73.57 82.66b76.81 72.23 55.13 44.30 34.00a57.03
201042.26 47.79 52.06 55.57 61.61 67.37 78.87 78.26 67.00 59.58 41.70 37.52 57.47
201138.23 39.11 46.00 49.10 59.35 66.50 71.61 77.84 75.03 54.90 41.21a39.32 54.85
201237.94 43.14 44.00 57.67 64.81 63.87 76.03 81.90 75.87 58.65 45.33 38.39 57.30
201336.90 42.68 50.23 55.40 67.58 70.80 82.61 78.84 71.47 58.61 44.60 37.29 58.08
201442.65 37.21 45.90 56.33 67.13 70.23 81.29 81.16 73.27 59.55 44.97 40.48 58.35
201542.48 50.11 55.61 58.33 71.03 81.00 83.10 81.75c67.40 62.13 43.67 38.39 61.25
201638.00 46.97 51.42 65.93 68.81 73.83 74.42 81.43a68.93 55.74 48.23 33.23 58.91
201733.06 39.36 44.84 55.03 67.81 72.43 81.16 85.32 75.10 57.00 44.57 37.71 57.78
201839.42 38.57 46.94 56.93 73.03 70.23 83.68 80.77 68.37 59.19 47.17 38.84 58.60
201941.10 35.25 53.16 57.83 71.10 72.20 75.48 79.65 67.60 54.10 46.73 38.61 57.73
202036.77 42.69 48.35 58.67 68.20a67.97 76.90 79.39 74.30 58.45 44.47 40.55 58.06
202141.19 37.82 49.32 61.73 65.97 79.90 82.48 77.84 68.93 54.17a46.93c35.45 58.48
202237.74 42.86 49.45 52.30 58.23 70.53 82.39 85.48 77.10 63.06 41.97a32.45b57.80
202340.03 40.68 48.71 53.70 75.29 74.03 82.26 82.58 72.10 62.03a46.73 41.29 59.95
202436.80a45.31 50.07c-----z-----z-----z-----z-----z-----z-----z-----z-----z44.06i
Period of Record Statistics
MEAN37.49 42.51 48.87 57.19 65.72 70.83 77.91 78.05 70.85 57.90 44.90 38.38 57.53
S.D.4.15 3.81 3.68 3.69 3.87 3.89 3.78 3.54 4.01 3.13 3.03 2.83 1.28
SKEW-1.19 -0.66 0.41 0.21 0.07 0.38 -0.12 -0.04 0.04 0.45 -0.30 -0.60 0.22
MAX46.13 50.11 61.61 66.07 76.29 81.00 88.58 86.41 80.17 68.32 53.20 43.97 61.52
MIN22.58 26.93 39.55 49.10 57.13 63.27 67.23 70.23 61.30 52.26 33.37 30.35 54.09
YRS101 102 100 102 103 101 100 104 102 103 102 100 84