SNAKE RIVER, WYOMING

Monthly Total Heating Degree Days

(488315)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1905 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 128.00 t 269.00 238.46 e 351.50 h 793.50 f 1066.00 1418.52 b 2991.98
1906 1398.10 a 1265.19 a 1376.50 866.90 a 757.00 534.50 206.00 h 329.24 b 224.50 q 833.12 c 1369.14 a 1372.00 10101.69
1907 1350.00 f 530.00 p 833.00 j 0.00 z 0.00 z 0.00 z 55.00 w 323.43 a 392.00 i 707.26 d 427.00 r 123.50 z 1030.69
1908 1612.00 1366.50 1292.00 0.00 z 395.50 n 576.00 229.83 b 322.50 501.50 117.00 z 1064.50 1547.50 8512.33
1909 1443.50 1370.00 1305.50 1147.50 853.00 195.50 m 247.50 228.00 514.50 842.50 1104.83 a 1779.00 10835.83
1910 1645.00 1481.00 1012.50 837.50 703.50 375.50 176.00 367.50 471.50 785.00 1091.00 1525.50 10471.50
1911 1586.50 1592.50 1196.50 905.00 750.50 361.50 294.50 344.50 531.50 944.00 1373.50 1667.50 11548.00
1912 1494.00 1385.00 1370.00 1032.50 812.00 418.00 246.50 322.00 644.00 939.00 1068.50 1557.50 11289.00
1913 1741.00 1577.00 1381.50 923.00 696.50 419.00 414.50 269.50 436.50 969.27 a 1226.00 1754.50 11808.27
1914 1544.00 1385.50 1336.50 878.00 647.00 483.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 6274.00
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 58.00 0.00 390.52 a 653.58 a 566.50 k 0.00 z 1102.10
1916 0.00 z 0.00 z 1084.00 590.50 i 0.00 z 0.00 z 0.00 z 126.00 0.00 z 308.00 v 1434.64 b 853.00 p 2644.64
1917 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 104.50 i 321.50 563.28 a 922.52 b 989.00 1170.50 3966.79
1918 1564.00 1447.50 1217.00 1062.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5291.00
1919 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 156.00 o 863.00 f 1381.67 c 1636.11 d 3017.78
1920 1583.77 c 1451.21 e 1397.00 532.00 n 574.00 h 520.00 229.00 281.87 d 569.48 a 946.57 b 1296.11 c 1523.13 a 9798.14
1921 983.00 m 1339.00 1218.76 d 1056.60 e 504.00 h 362.00 281.50 318.02 b 670.86 a 784.09 b 760.50 i 1469.00 7499.82
1922 1824.23 e 866.00 l 933.50 j 1182.00 e 563.00 j 363.60 e 290.50 243.57 c 424.50 f 842.96 e 980.50 h 1134.50 i 4746.86
1923 1092.50 i 900.50 l 1530.33 e 723.00 i 598.50 f 400.50 g 192.95 b 403.50 505.00 936.00 1151.79 b 1011.00 l 4719.56
1924 1277.00 h 795.00 k 1434.86 c 788.50 f 402.00 l 435.56 c 269.70 a 364.85 e 574.00 894.02 c 1321.73 d 1254.00 h 5294.71
1925 1015.50 j 581.50 n 618.50 o 711.50 f 465.00 h 264.00 k 312.67 b 0.00 z 582.41 a 664.50 l 0.00 z 1333.00 b 2228.09
1926 860.50 n 657.00 n 1240.00 e 471.00 m 365.00 k 384.00 202.00 267.00 684.31 a 806.55 c 1030.50 919.50 l 4614.36
1927 1057.50 i 768.50 m 891.50 k 381.00 r 586.50 i 0.00 z 241.80 a 393.00 537.86 b 515.50 m 542.00 o 586.50 u 1172.66
1928 444.00 v 789.50 m 902.00 j 601.50 n 264.50 r 143.50 w 170.50 l 338.50 497.50 135.50 x 206.50 y 1592.92 e 2428.92
1929 1083.50 k 585.50 q 818.50 k 712.50 j 435.00 o 298.50 k 112.50 l 199.20 d 0.00 z 789.35 d 1385.17 a 1351.60 a 3725.33
1930 1973.00 1148.00 1314.50 786.50 707.50 431.38 a 201.50 b 223.72 a 544.50 868.00 a 1325.00 1670.26 b 11193.85
1931 1497.00 1279.83 d 1292.18 a 951.21 a 685.62 a 317.50 174.00 265.50 530.17 a 831.50 1291.11 c 431.00 w 9115.62
1932 1226.50 i 842.00 m 579.50 s 781.00 g 553.50 f 425.69 a 273.00 310.00 534.00 748.00 i 1198.50 1841.00 4582.19
1933 1512.50 1619.50 1392.50 1053.00 799.50 328.50 149.50 269.50 527.00 753.96 c 1077.50 1282.48 d 10765.45
1934 1427.60 b 1070.16 c 1025.30 d 746.40 e 460.00 416.50 167.83 b 206.50 601.00 745.00 1111.61 b 1465.50 9443.39
1935 1022.50 k 1346.00 1390.50 1002.00 783.00 468.00 190.13 a 312.50 517.50 882.47 a 1400.69 a 1631.63 a 9924.42
1936 1667.00 1484.50 1474.05 a 994.50 616.50 342.00 86.50 225.00 511.50 777.50 1269.50 1496.00 10944.55
1937 1926.00 1427.00 1258.00 1029.00 637.50 373.50 157.00 249.50 428.00 782.50 1130.50 1459.50 10858.00
1938 1596.00 1199.50 395.50 u 935.69 a 761.05 a 369.00 233.00 292.50 397.24 a 0.00 z 1485.60 e 1090.50 h 7269.58
1939 1548.28 d 0.00 z 0.00 z 848.50 625.00 0.00 z 218.50 269.59 c 485.50 854.05 a 1108.00 1305.00 7262.42
1940 1537.50 1253.04 e 1239.00 720.50 f 590.00 341.00 195.50 202.00 395.00 776.66 c 1353.50 1501.50 9384.70
1941 0.00 z 1339.85 a 1178.00 920.00 617.00 397.00 193.50 263.50 664.00 851.50 1166.00 1388.00 8978.35
1942 1687.43 a 1539.50 1383.00 900.50 800.50 0.00 z 0.00 z 0.00 z 418.97 a 0.00 z 0.00 z 0.00 z 6729.90
1943 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 233.00 260.18 c 444.00 734.38 b 1158.00 1504.03 b 4333.59
1944 1690.02 a 1350.82 d 1383.63 a 938.28 a 648.50 486.50 284.50 337.00 520.00 737.00 1240.00 1589.00 11205.25
1945 1487.48 a 1282.00 1278.00 1102.50 715.00 558.00 244.50 258.50 614.00 803.00 1257.50 1567.50 11167.98
1946 1649.00 1333.50 1179.50 840.00 752.00 405.00 162.00 255.00 567.00 989.50 1199.00 1391.79 b 10723.29
1947 1725.00 1295.50 1217.50 977.50 643.00 504.50 207.00 323.00 499.66 a 741.50 1319.00 1486.50 10939.66
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 279.00 495.50 816.00 1345.00 1374.00 f 2935.50
1949 1571.50 f 1438.50 d 933.00 g 896.79 b 625.17 a 434.50 228.00 97.50 n 468.50 738.50 f 1002.00 1508.50 6601.95
1950 1198.50 h 690.50 l 980.50 g 983.50 872.43 c 480.00 c 304.00 258.00 516.72 a 778.74 b 1177.50 b 1303.00 6673.89
1951 1617.00 1286.00 771.00 o 387.50 p 463.00 h 568.50 218.55 a 304.00 552.32 b 908.00 1351.00 1548.50 8353.87
1952 1581.00 1485.50 1434.27 a 877.50 652.55 a 406.00 267.50 259.50 435.00 b 774.00 1392.93 a 1488.00 11053.75
1953 707.00 m 1331.56 a 1245.00 1077.00 812.00 437.00 149.50 252.50 469.50 722.30 a 1036.00 1520.50 9052.86
1954 1409.50 1183.00 1382.00 903.50 644.50 503.50 164.50 320.00 513.21 b 912.50 1050.00 1683.00 10669.21
1955 1745.50 1497.50 1551.50 1043.00 732.63 a 475.00 220.62 a 211.00 513.50 836.00 1350.50 1465.00 11641.75
1956 1520.50 1600.00 1391.50 937.00 625.00 396.21 a 207.00 313.00 512.50 859.00 1400.00 1502.50 11264.21
1957 1838.50 1204.00 1287.00 955.00 654.50 448.97 a 226.50 259.00 525.00 849.50 471.00 q 0.00 z 8247.96
1958 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 0.00 z 0.00 z 0.00 z 0.00
1959 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 0.00 z 0.00 z 0.00 z 0.00
1960 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 0.00 z 0.00 z 0.00 z 0.00
1961 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 0.00 z 0.00 z 0.00 z 0.00
1962 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 0.00 z 0.00 z 0.00 z 0.00
1963 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 0.00 z 0.00 z 0.00 z 0.00
1964 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 0.00 z 0.00 z 0.00 z 0.00
1965 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 0.00 z 0.00 z 0.00 z 0.00
1966 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 0.00 z 0.00 z 0.00 z 0.00
1967 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 0.00 z 0.00 z 0.00 z 0.00
1968 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 0.00 z 0.00 z 0.00 z 0.00
1969 1498.00 1386.00 1492.00 860.00 597.50 439.50 237.50 213.00 441.50 964.50 1212.00 1492.50 10834.00
1970 1492.50 1302.00 1358.00 789.00 i 729.00 297.00 i 181.50 189.50 626.00 1017.00 1169.00 1576.00 9640.50
1971 1506.00 1379.00 1386.00 661.00 l 692.00 451.00 228.50 109.50 627.00 886.50 1264.50 1641.50 10171.50
1972 1583.50 1335.50 1143.00 966.00 700.50 388.50 269.00 206.00 604.50 861.50 1233.50 1712.50 11004.00
1973 1661.50 1327.00 1317.00 832.00 g 692.50 419.00 210.00 237.00 0.00 z 824.50 964.50 f 1450.50 8139.00
1974 1574.00 1359.68 c 1287.69 e 1022.22 c 512.00 k 355.00 153.50 310.50 555.50 777.50 1270.50 1667.00 10333.09
1975 1698.50 1439.93 a 1381.50 1167.12 d 891.50 517.00 166.00 421.00 588.00 965.65 a 1414.50 1456.00 12106.69
1976 1588.50 1481.50 1530.50 996.11 c 692.33 d 503.40 e 215.00 305.50 g 511.50 908.54 e 1213.33 c 1655.50 11296.22
1977 1716.00 1368.50 1455.00 900.60 e 536.00 h 288.50 233.00 305.00 620.36 b 881.00 1225.00 c 1504.02 a 10496.97
1978 1476.00 1324.00 1206.50 925.00 785.16 b 442.50 225.94 e 377.00 585.54 b 901.14 b 1273.50 1924.58 a 11446.85
1979 1975.00 1377.00 1315.00 1020.00 756.83 b 345.00 f 217.00 a 271.25 a 447.50 643.50 h 1467.50 1513.50 10360.58
1980 1639.50 1292.00 1341.50 969.00 669.60 a 440.50 251.50 378.50 551.25 b 915.50 1206.50 1383.00 11038.35
1981 1467.50 1321.50 1153.00 889.66 a 709.50 469.00 283.00 209.00 459.50 948.00 1128.50 1477.00 10515.16
1982 1708.00 1500.00 1274.50 1160.00 828.50 461.50 278.50 225.35 e 377.50 j 965.00 1423.97 a 1569.93 c 11395.24
1983 1559.50 1327.00 1234.00 1095.00 a 821.00 533.50 274.50 198.50 585.50 837.00 1229.50 1742.00 11437.00
1984 1652.00 1506.00 1276.00 0.00 z 767.00 520.50 227.50 246.50 643.93 b 1105.50 1344.44 c 1810.50 11099.87
1985 1804.00 1675.00 1473.50 923.50 636.50 388.50 168.50 387.50 0.00 z 0.00 z 0.00 z 0.00 z 7457.00
1986 1545.50 1221.00 1146.50 970.34 a 779.50 307.00 353.40 a 282.32 c 680.50 0.00 z 1305.00 1766.00 10357.07
1987 1716.00 1312.50 0.00 z 822.50 563.17 a 382.50 308.50 387.00 500.00 891.50 1232.50 1622.00 9738.17
1988 1767.52 a 1488.50 1438.50 936.50 668.50 281.00 217.00 a 352.88 a 648.00 745.00 1325.00 1698.00 11566.40
1989 1694.50 1496.00 1235.00 963.50 723.50 437.50 179.00 342.50 572.00 895.00 1278.50 1664.00 11481.00
1990 1495.50 1474.00 1238.50 853.00 783.50 426.00 206.50 274.50 377.00 979.00 1202.50 1960.00 11270.00
1991 1762.50 1237.50 1358.50 1042.00 768.00 425.50 257.50 223.50 544.50 957.00 1373.50 1735.00 11685.00
1992 1712.00 1251.00 1047.50 851.00 552.00 415.50 373.50 318.00 626.50 830.50 1405.50 1696.00 11079.00
1993 1727.50 1496.50 1244.50 1014.50 645.00 502.00 500.50 402.50 601.00 925.50 1492.00 1576.00 12127.50
1994 1485.00 1471.00 1247.00 934.00 617.50 421.50 241.50 254.00 511.50 946.50 1518.00 1550.50 11198.00
1995 1681.50 1182.50 1316.00 1024.50 803.50 514.00 335.50 368.00 591.00 1049.50 1111.50 1528.50 11506.00
1996 1639.00 1466.00 1313.00 1019.00 804.00 417.32 b 185.00 294.00 622.00 931.50 1201.50 1488.50 11380.82
1997 1620.00 1490.50 1349.00 1121.00 714.00 357.50 300.50 273.50 0.00 z 926.50 1223.00 1754.00 11129.50
1998 1446.00 1333.50 1309.50 973.00 671.50 590.00 218.00 398.00 369.00 832.50 1131.00 1590.30 a 10862.30
1999 1478.00 1385.00 1270.50 1033.50 808.50 490.00 296.00 246.50 620.50 862.50 1017.00 1543.00 11051.00
2000 1474.00 1273.50 1241.50 864.50 672.70 a 450.00 213.50 251.00 585.00 866.50 1201.00 f 1666.25 c 9558.45
2001 1697.00 1395.50 1188.50 996.35 d 639.00 422.00 184.00 204.50 463.50 919.67 a 1084.20 e 1625.95 a 10820.16
2002 1622.00 1530.50 1379.00 959.00 741.50 389.50 141.00 349.78 a 543.00 1000.00 1351.50 1535.00 11541.78
2003 1348.50 0.00 z 0.00 z 499.50 m 680.00 439.00 136.50 190.50 573.00 769.32 a 1443.50 1508.48 c 7088.80
2004 1635.50 1410.50 1103.00 851.00 726.50 436.50 258.50 344.50 578.00 858.50 1254.50 1446.15 a 10903.15
2005 1452.00 1422.00 1209.57 d 424.00 q 694.00 504.00 225.50 299.00 585.50 822.00 1248.00 e 1612.50 10074.07
2006 1523.50 1464.00 1366.07 a 894.00 e 673.00 371.50 136.00 329.00 537.00 e 963.50 797.50 k 1257.50 g 8257.57
2007 1790.50 1277.00 855.00 h 263.50 t 677.41 d 401.50 57.83 e 237.00 507.50 882.50 829.50 i 1602.46 e 7433.70
2008 1790.00 1417.50 1084.50 h 0.00 z 800.50 521.50 226.00 290.50 569.00 906.50 0.00 z 1147.00 j 6521.50
2009 1540.70 a 1335.00 1346.12 e 555.00 m 737.05 b 483.00 279.00 345.50 409.00 1069.50 1242.50 1116.50 i 8787.37
2010 1553.10 a 1387.00 981.00 f 551.00 n 672.50 g 493.00 285.50 311.50 544.00 788.50 592.50 o 1068.00 i 5362.60
2011 1579.00 1495.00 1265.46 c 350.00 t 561.50 j 551.90 a 289.50 275.26 b 487.50 828.73 a 1384.00 1654.00 9810.35
2012 1526.50 1394.50 1135.50 812.50 705.00 451.50 151.50 259.50 512.00 973.50 1132.00 1530.50 10584.50
2013 1774.50 1399.50 1339.50 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 4513.50
Period of Record Statistics
MEAN 1615.12 1382.87 1298.70 960.91 708.43 436.49 228.96 281.91 534.29 868.65 1247.89 1561.38 11139.12
S.D. 132.29 115.00 115.80 95.89 80.89 68.17 68.98 69.44 73.70 88.39 130.70 144.16 488.46
SKEW 0.55 -0.02 -0.20 0.26 -0.15 0.04 0.62 -0.69 -0.15 0.14 -0.03 0.17 -0.71
MAX 1975.00 1675.00 1551.50 1182.00 891.50 590.00 500.50 421.00 684.31 1105.50 1518.00 1960.00 12127.50
MIN 1348.50 1070.16 1012.50 746.40 460.00 281.00 57.83 0.00 369.00 653.58 989.00 1170.50 9443.39
NO YRS 76 78 75 66 71 78 86 90 84 81 79 77 39