MERIDIAN 1 SSW, IDAHO

Monthly Total Heating Degree Days

(105841)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 196003
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
1911 1033.00 977.00 632.50 506.50 338.93 a 65.69 a 16.50 9.50 201.50 513.50 840.50 1090.50 6225.62
1912 1201.50 824.00 762.50 475.00 268.50 67.00 54.00 57.00 242.00 520.50 682.50 1073.50 6228.00
1913 1191.00 951.50 825.00 443.50 222.50 58.00 24.00 5.50 146.00 544.00 678.00 1184.00 6273.00
1914 892.50 823.50 614.50 414.31 a 162.50 138.50 6.00 13.00 194.00 370.50 792.50 1375.00 5796.81
1915 943.50 h 492.50 i 586.00 309.50 326.00 154.00 30.00 0.00 216.00 400.00 810.00 1027.00 3858.50
1916 1265.50 827.00 618.50 433.50 408.00 191.00 31.50 49.71 b 199.00 578.00 929.00 1187.00 6717.71
1917 1346.00 990.50 1016.50 568.00 335.00 153.00 1.00 0.00 91.00 452.00 703.50 742.50 6399.00
1918 985.50 847.00 628.00 522.50 335.50 30.50 5.50 56.00 62.50 382.00 797.50 1167.50 5820.00
1919 1069.50 831.50 699.50 416.00 249.00 72.50 5.00 0.50 150.50 660.50 866.00 1344.00 6364.50
1920 1147.50 869.50 732.78 b 570.50 346.37 e 45.50 i 0.00 a 39.00 137.07 a 529.58 a 748.00 973.92 a 6094.21
1921 994.07 a 858.00 625.50 544.50 255.50 41.00 22.14 c 0.50 285.56 c 396.28 a 673.00 1046.50 5742.55
1922 1427.50 952.50 804.50 610.00 291.50 28.39 b 2.00 3.50 96.00 309.00 863.50 1131.00 6519.39
1923 944.50 990.50 772.93 a 463.50 277.50 125.50 1.00 0.00 113.00 468.50 730.00 1057.50 5944.43
1924 1372.30 c 706.00 811.00 482.50 124.50 61.50 0.00 13.50 123.60 e 375.00 752.00 1382.00 6203.90
1925 1070.00 655.00 614.50 345.50 146.73 a 118.00 0.00 35.50 147.00 500.50 767.50 940.50 5340.73
1926 1077.50 683.50 614.50 283.00 207.50 46.00 0.00 11.00 254.00 350.50 630.00 1124.50 5282.00
1927 1081.50 734.50 716.50 534.50 360.50 60.00 3.00 37.50 214.50 431.50 621.00 1170.50 5965.50
1928 1107.00 919.00 580.50 479.00 97.00 81.50 9.00 5.50 102.00 395.00 697.00 1196.00 5668.50
1929 1254.50 1131.00 643.50 521.50 251.00 98.00 0.50 0.00 244.00 393.00 871.50 866.00 6274.50
1930 1431.50 703.50 583.00 236.00 201.50 67.50 0.00 0.00 98.50 485.50 874.50 1229.00 5910.50
1931 1045.50 756.00 609.50 398.50 154.50 23.00 2.00 10.00 147.50 391.50 881.00 1164.00 5583.00
1932 1156.00 0.00 z 405.00 q 396.96 b 220.00 77.00 0.00 z 27.00 m 90.50 455.18 a 725.00 1269.00 4389.65
1933 1077.50 1216.00 746.50 495.00 350.00 18.00 1.00 38.00 209.00 328.00 734.50 617.50 g 5213.50
1934 820.00 614.00 468.00 267.50 104.50 71.00 0.00 w 0.00 182.50 351.50 578.50 1014.00 4471.50
1935 1092.00 916.00 810.00 522.41 a 287.50 50.69 a 11.22 b 25.63 e 60.00 408.96 e 950.50 1168.50 6303.42
1936 1110.00 1154.50 865.50 182.50 g 147.52 b 62.14 b 0.00 d 4.00 162.93 a 356.00 902.50 977.05 c 5742.15
1937 1580.00 947.00 634.00 494.50 169.50 84.50 0.00 32.00 115.50 345.65 a 632.00 930.00 d 5964.65
1938 940.50 711.00 741.00 424.00 310.00 50.00 6.64 c 9.50 i 59.00 360.50 932.50 1005.50 5540.64
1939 1006.00 962.00 653.00 351.60 e 150.50 112.50 0.00 c 3.62 a 101.00 395.00 742.50 784.50 5262.22
1940 964.50 733.50 571.00 398.00 124.50 34.00 0.00 0.00 126.00 311.03 a 889.80 e 680.50 f 4152.33
1941 982.00 713.00 622.14 b 417.78 c 197.50 77.50 0.00 38.23 a 239.42 d 466.15 d 718.50 941.00 5413.22
1942 1381.00 918.00 763.00 396.50 364.50 168.00 3.50 37.00 155.50 416.00 750.00 977.50 6330.50
1943 1119.00 813.50 774.50 302.00 351.50 157.50 23.50 25.00 24.00 i 391.93 c 755.17 a 974.43 a 5688.03
1944 1245.50 855.00 793.00 462.00 257.50 156.50 17.50 8.00 134.50 280.00 774.50 1091.00 6075.00
1945 997.00 734.50 728.00 530.50 254.00 158.00 0.00 19.00 238.50 328.00 762.00 1059.50 5809.00
1946 1097.00 849.50 639.50 400.00 233.50 70.00 4.50 8.50 180.50 612.50 814.50 887.50 5797.50
1947 1288.00 755.00 604.00 476.50 152.50 146.50 3.00 23.00 176.00 343.50 834.50 1024.50 5827.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 22.50 169.50 455.70 a 845.00 1227.50 2720.20
1949 1650.00 939.50 685.00 367.00 175.00 81.00 7.00 8.50 114.00 613.50 693.50 591.00 l 5334.00
1950 1204.00 836.50 772.00 502.50 353.50 129.50 18.50 11.00 175.50 332.00 720.50 923.00 5978.50
1951 1135.50 816.00 858.50 462.50 314.00 168.50 13.00 51.50 212.50 570.00 873.00 1177.50 6652.50
1952 1282.00 1056.50 917.00 440.50 237.50 89.00 20.00 4.00 61.00 267.00 867.60 e 909.00 6151.10
1953 716.50 744.00 665.00 507.50 368.00 174.64 b 1.00 22.50 105.00 408.50 612.41 a 1034.50 5359.56
1954 878.00 718.50 783.00 426.00 219.38 e 168.00 9.50 55.00 180.50 512.00 704.50 1118.50 5772.88
1955 1308.00 1061.00 866.00 581.50 296.50 64.00 50.00 0.00 213.50 411.50 884.00 894.35 a 6630.35
1956 975.00 1086.50 696.00 416.50 210.00 90.50 9.50 37.00 130.00 480.50 880.50 1052.00 6064.00
1957 1380.50 900.00 680.00 480.50 207.00 83.00 3.50 16.00 90.50 496.00 506.00 k 879.33 e 5216.33
1958 1029.50 648.00 764.15 a 509.50 120.50 60.00 5.00 0.60 e 146.00 372.50 758.00 900.07 b 5313.81
1959 874.50 758.00 737.00 405.00 352.50 48.62 a 12.00 16.50 g 207.50 442.50 601.00 i 1117.00 4954.62
1960 1269.50 904.50 220.50 w 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2174.00
Period of Record Statistics
MEAN 1135.35 859.41 709.12 446.64 247.69 92.15 9.41 18.21 156.28 427.72 777.54 1061.07 5971.25
S.D. 193.37 140.90 106.26 84.48 84.16 47.67 12.61 18.06 57.66 90.59 94.42 146.47 404.09
SKEW 0.45 0.50 0.44 -0.47 -0.03 0.48 1.92 0.75 0.15 0.58 -0.09 0.16 -0.10
MAX 1650.00 1216.00 1016.50 610.00 408.00 191.00 54.00 57.00 285.56 660.50 950.50 1382.00 6717.71
MIN 716.50 614.00 468.00 236.00 97.00 18.00 0.00 0.00 59.00 267.00 578.50 742.50 5262.22
NO YRS 48 47 47 47 48 47 46 46 48 49 47 46 36