CHESAW 4 NNW, WASHINGTON

Monthly Total Heating Degree Days

(451385)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 198404
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.
Months with 5 missing days or less use mean for missing day(s)
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 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1959 0.00 z 0.00 z 0.00 z 0.00 z 73.50 z 313.50 145.00 288.00 474.50 776.00 1195.00 1287.00 4479.00
1960 1490.50 1214.50 1062.50 760.50 597.50 301.50 70.00 265.50 392.50 686.50 1108.50 1404.50 9354.50
1961 1293.00 1024.50 1044.50 778.00 506.50 174.50 120.00 58.00 482.00 819.00 1231.00 1413.50 8944.50
1962 1540.50 1108.00 1152.00 684.00 575.00 318.00 200.50 231.50 339.00 680.00 0.00 z 1216.50 8045.00
1963 1481.50 908.00 971.00 781.50 520.50 288.50 239.73 a 159.00 235.00 666.00 1121.00 1322.00 8693.73
1964 1350.00 1148.50 1135.00 801.50 554.90 a 336.00 166.50 320.85 a 521.90 a 727.50 1099.00 1518.00 9679.65
1965 1334.50 1129.50 1222.50 730.00 593.13 a 295.00 120.50 170.50 531.00 625.00 1000.00 1336.00 9087.63
1966 1378.50 1078.50 1101.02 a 756.00 454.50 376.00 212.00 211.00 261.21 a 758.00 999.50 1204.00 8790.22
1967 1231.50 1027.50 1117.00 860.50 544.50 221.00 138.50 72.00 193.93 b 737.28 a 1060.34 a 1367.10 a 8571.16
1968 1402.50 1048.50 954.00 825.50 553.00 386.00 156.00 285.00 394.50 812.72 a 1075.50 1538.00 9431.22
1969 1780.50 1228.37 a 1037.00 750.50 439.00 190.34 a 212.00 206.15 a 391.50 797.73 a 1011.21 a 1243.50 9287.80
1970 1398.50 988.50 1104.00 857.59 a 522.35 a 187.00 112.00 111.00 511.00 783.50 1124.00 1407.40 a 9106.84
1971 1259.00 1052.00 1256.00 801.50 427.80 a 401.38 a 209.00 72.50 528.00 828.00 1049.00 1541.00 9425.18
1972 1562.00 1166.00 987.87 a 854.50 451.50 324.00 217.00 d 137.00 538.97 a 765.50 1016.50 1444.50 9465.33
1973 1418.25 a 1052.00 977.00 734.48 a 507.88 a 310.86 a 137.50 202.00 326.00 766.22 a 1191.00 1211.50 8834.70
1974 1454.50 1052.50 1079.00 706.00 625.00 240.50 220.50 168.00 336.00 644.50 1046.50 1264.00 8837.00
1975 1454.00 1234.50 1164.00 852.93 a 548.00 332.59 a 93.00 280.50 368.50 802.00 1100.00 c 1280.30 a 9510.32
1976 1325.25 a 1164.50 1160.00 759.00 525.00 420.50 187.03 a 261.00 331.50 746.50 1048.45 a 1298.50 9227.23
1977 1501.50 1024.50 1106.50 662.00 645.00 260.00 213.50 137.43 a 485.89 b 768.00 1196.90 a 1435.30 a 9436.52
1978 1366.50 1052.00 966.00 713.79 a 581.00 252.50 115.70 c 238.18 a 435.52 a 728.00 1201.50 1560.00 9210.69
1979 1210.50 h 1187.31 b 640.50 j 741.21 a 459.66 b 285.00 138.98 a 88.19 b 282.50 576.50 1115.36 b 1184.72 a 6059.42
1980 1552.14 b 1251.64 d 1055.00 626.79 b 361.50 f 382.24 a 215.00 313.62 a 426.00 700.50 1036.73 d 1203.26 d 8762.91
1981 1103.50 976.89 a 847.50 765.00 b 485.67 a 403.97 a 244.38 a 75.00 304.29 b 728.00 1002.86 b 1337.00 8274.05
1982 1083.50 f 1137.23 b 1069.00 859.44 c 0.00 z 161.38 a 213.12 c 201.00 464.48 a 716.21 b 1122.93 a 1369.54 c 7314.34
1983 1194.50 986.00 927.50 735.00 b 482.57 a 231.00 h 296.88 e 148.28 a 510.54 b 696.93 d 691.50 f 1512.91 c 7491.11
1984 1221.06 d 1092.68 a 0.00 z 813.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3126.73
Period of Record Statistics
MEAN 1395.38 1093.36 1065.04 768.41 527.27 298.43 175.77 188.05 402.65 733.44 1093.60 1356.00 9114.12
S.D. 147.81 90.56 98.21 63.73 60.91 75.99 55.34 81.39 101.83 63.41 71.91 118.23 371.02
SKEW 0.36 0.07 -0.16 -0.23 0.12 -0.20 0.02 -0.04 -0.33 -0.60 0.39 0.25 -0.56
MAX 1780.50 1251.64 1256.00 860.50 645.00 420.50 296.88 320.85 538.97 828.00 1231.00 1560.00 9679.65
MIN 1103.50 908.00 847.50 626.79 427.80 161.38 70.00 58.00 193.93 576.50 999.50 1184.72 8274.05
NO YRS 23 25 23 25 22 24 25 25 25 25 23 25 19