CHIEF JOSEPH DAM, WA

Maximum of Maximum Temperature (Degrees Fahrenheit)

(451400)

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
1949-----z-----z-----z-----z-----z-----z-----z-----z-----z75.00 62.00 53.00 -----z
195051.00b50.00 60.00 76.00 87.00 96.00k102.00k104.00i95.00i72.00c59.00g53.00k-----z
195148.00i54.00 60.00 76.00 90.00 92.00 103.00 102.00 93.00 77.00 49.00 51.00 103.00i
195248.00 49.00 64.00 85.00 85.00 91.00 104.00 101.00 95.00 84.00 55.00b46.00 104.00b
195353.00a60.00b65.00b73.00 85.00f89.00b101.00 102.00 94.00 79.00a69.00 55.00a102.00o
195447.00a60.00a64.00a74.00b94.00b87.00a99.00b-----z85.00 74.00 61.00 46.00 -----z
195541.00 47.00 55.00 72.00 81.00a100.00 105.00a98.00b98.00 73.00 61.00a46.00a105.00f
195644.00 46.00 57.00 83.00 92.00 -----z104.00 100.00 88.00 74.00 55.00b57.00 -----z
195737.00 58.00 63.00 83.00 90.00 95.00 99.00 95.00 95.00 84.00a60.00 50.00a99.00b
195846.00 56.00 62.00 75.00 100.00 105.00 104.00 105.00 98.00 85.00 62.00 56.00a105.00a
195950.00 47.00 62.00 75.00 86.00 89.00 106.00 101.00 86.00 75.00 66.00 44.00 106.00
196045.00 49.00 75.00 77.00 86.00 96.00 108.00 102.00 95.00 81.00 61.00 45.00 108.00
196152.00 59.00 68.00 75.00 86.00 101.00 103.00 108.00 90.00 79.00 61.00 48.00 108.00
196250.00 51.00 68.00 80.00 82.00 92.00 101.00 97.00 95.00 74.00 64.00 51.00a101.00a
196350.00 58.00a68.00 70.00 89.00 98.00 96.00 98.00 98.00 84.00 59.00 48.00 98.00a
196444.00 51.00 -----z71.00 83.00 93.00 100.00 92.00 90.00 75.00 60.00 45.00 -----z
196550.00 55.00 65.00 76.00 89.00 93.00 97.00 101.00 85.00 83.00 67.00 48.00 101.00
196650.00 48.00 75.00 78.00 89.00 87.00 99.00 103.00 98.00 80.00 60.00 51.00 103.00
196754.00 60.00 62.00 70.00 89.00 92.00 99.00 102.00 103.00 72.00 75.00 50.00 103.00
196845.00 60.00 65.00 86.00 86.00 95.00a104.00 96.00 89.00 74.00 58.00 57.00a104.00b
196943.00 41.00 64.00 75.00 89.00 96.00 100.00 100.00 94.00 71.00 61.00 47.00 100.00
197042.00 49.00 62.00 67.00 90.00 101.00 102.00 101.00 92.00 83.00a56.00 46.00 102.00a
197148.00 50.00 62.00 75.00 87.00 93.00 99.00 102.00 86.00 78.00 54.00 43.00 102.00
197248.00a58.00 67.00 75.00 85.00 90.00 -----z102.00 93.00a79.00 54.00 51.00 -----z
197343.00 51.00 65.00 80.00 94.00 -----z103.00 104.00 96.00 71.00 52.00 -----z-----z
197454.00a53.00 65.00 73.00 82.00 90.00g99.00 98.00a95.00 72.00 54.00 51.00 99.00i
197545.00 43.00 57.00 75.00 78.00 90.00 107.00 97.00 94.00 79.00a72.00 58.00 107.00a
197645.00 55.00a65.00 74.00 86.00 93.00 99.00 93.00 97.00 85.00 62.00 51.00 99.00a
197744.00 -----z65.00 93.00 83.00 99.00 101.00 107.00 89.00 72.00 64.00 55.00 -----z
197843.00 47.00 70.00 76.00 85.00 99.00 102.00 103.00 87.00 76.00 64.00e50.00d103.00i
197937.00 53.00 71.00 82.00 89.00 100.00a108.00 100.00 92.00 81.00 57.00 58.00 108.00a
198048.00 48.00 64.00a86.00 85.00 86.00 104.00 98.00 91.00 82.00 58.00c57.00 104.00d
198151.00 62.00 69.00 80.00 87.00 90.00 101.00 107.00 97.00 74.00 60.00 52.00 107.00
198254.00b56.00 63.00 79.00 89.00 100.00a103.00a99.00a91.00 72.00 59.00a49.00 103.00f
198352.00a51.00 62.00 79.00a98.00a93.00 94.00 102.00 83.00 73.00 63.00b40.00a102.00f
198451.00 51.00 66.00 80.00 92.00 92.00 103.00 101.00 92.00 80.00 56.00 38.00 103.00
198537.00b49.00 59.00 81.00 91.00 98.00 106.00 97.00 85.00 75.00 62.00 42.00 106.00b
198646.00 53.00 71.00 81.00 103.00 106.00 100.00 104.00 96.00 77.00d60.00 43.00 106.00d
198746.00 51.00 71.00 88.00 98.00 104.00a103.00 103.00 103.00 86.00 66.00 54.00 104.00a
198849.00 62.00 66.00 86.00a94.00 98.00a104.00 99.00 100.00 85.00 67.00a52.00 104.00c
198964.00 45.00 63.00g89.00 86.00 96.00 100.00 102.00 91.00 81.00 75.00 48.00a102.00h
199055.00 59.00 74.00 79.00 91.00 94.00a106.00 104.00 96.00 77.00 71.00 54.00a106.00b
199146.00 63.00 -----z82.00 81.00 90.00 101.00 102.00 95.00 85.00 60.00a53.00 -----z
199255.00 59.00 74.00 83.00 97.00 108.00 105.00 104.00 92.00 83.00 56.00 41.00b108.00b
199345.00 46.00 64.00 73.00 99.00 93.00 93.00 96.00 96.00 85.00 63.00 51.00 99.00
199446.00 53.00 77.00a85.00 91.00 99.00 110.00 103.00 93.00 80.00 53.00 51.00 110.00a
199542.00a61.00 70.00 79.00 95.00 96.00 103.00 101.00 99.00 72.00 62.00 55.00 103.00a
199650.00 52.00 67.00 78.00a82.00 92.00 106.00 105.00 90.00 81.00 55.00 41.00a106.00b
199747.00a49.00 64.00 73.00 89.00 91.00 98.00 104.00 92.00 70.00 61.00 53.00 104.00a
199844.00a55.00 70.00 86.00 92.00 95.00 109.00 110.00 103.00 81.00 64.00 53.00 110.00a
199947.00a55.00 70.00 83.00 93.00 98.00 101.00 102.00 89.00 75.00 58.00 53.00 102.00a
200044.00 47.00 70.00 78.00 84.00 97.00 104.00 101.00 93.00 73.00 59.00 39.00a104.00a
200145.00 48.00 67.00 84.00 99.00 96.00 103.00 103.00 93.00 76.00 58.00 49.00a103.00a
200254.00 64.00 67.00 77.00 85.00 103.00 108.00a105.00 96.00a78.00 58.00 53.00 108.00b
200348.00 56.00 78.00 76.00 87.00 99.00 106.00 105.00 98.00 85.00 58.00 47.00 106.00
200447.00 51.00 71.00 83.00 85.00 103.00 102.00 105.00 86.00 80.00 58.00 47.00 105.00
200549.00 59.00 72.00 86.00 95.00 96.00a102.00a102.00 92.00 77.00 53.00 45.00 102.00b
200654.00 55.00 66.00 82.00a99.00 102.00 110.00 100.00 96.00 84.00 58.00 49.00 110.00a
200755.00a55.00 72.00 75.00 93.00 97.00 105.00 102.00 93.00 71.00 61.00 59.00 105.00a
200844.00 52.00 60.00 77.00 98.00 104.00 100.00 106.00a89.00a82.00 62.00a47.00 106.00c
200953.00 50.00c64.00 82.00b95.00 94.00 103.00 107.00 97.00 71.00 58.00b42.00 107.00g
201049.00 57.00 64.00 77.00 82.00d90.00 101.00 99.00 89.00 82.00 62.00 46.00 101.00d
201150.00 52.00 69.00 67.00 77.00 86.00 98.00 99.00 99.00a70.00 60.00 52.00 99.00a
201251.00 53.00 64.00 82.00 92.00 84.00 104.00 105.00a90.00 85.00a59.00a55.00a105.00d
201347.00 52.00 74.00 82.00c92.00e90.00 105.00 100.00 95.00d72.00 59.00a43.00 105.00m
201460.00 59.00 65.00 76.00 88.00c92.00 107.00 103.00 91.00 91.00 63.00a52.00 107.00d
201550.00 56.00c71.00 90.00b92.00a113.00a108.00 99.00 98.00a80.00 66.00 40.00t-----z
201642.00 58.00i75.00 87.00d89.00 102.00 102.00 100.00j89.00d70.00a66.00 46.00 -----z
201742.00a46.00 66.00 68.00 87.00 100.00a105.00k105.00l98.00h74.00c59.00g42.00g-----z
201849.00b56.00b63.00 84.00 91.00 93.00 105.00 104.00 94.00s75.00 69.00 53.00 105.00w
201946.00 42.00 69.00 75.00 91.00 97.00 100.00 105.00 94.00 74.00 57.00 45.00 105.00
202055.00 60.00 66.00 78.00 89.00 100.00b102.00 97.00 94.00 84.00a-----z-----z-----z
Period of Record Statistics
MEAN47.97 53.16 66.54 78.82 89.36 95.72 102.60 101.49 93.18 77.90 60.70 49.34 104.29
S.D.5.02 5.38 4.90 5.57 5.47 5.68 3.55 3.49 4.50 5.09 5.12 5.03 3.07
SKEW0.32 -0.05 0.17 0.12 0.21 0.42 -0.16 -0.29 -0.04 0.22 0.62 -0.20 -0.13
MAX64.00 64.00 78.00 93.00 103.00 113.00 110.00 110.00 103.00 91.00 75.00 59.00 110.00
MIN37.00 41.00 55.00 67.00 77.00 84.00 93.00 92.00 83.00 70.00 49.00 38.00 98.00
YRS70 69 68 71 70 67 68 67 68 72 69 67 48