KALISPELL WSO AIRPORT, MONTANA

Monthly Total Growing Degree Days

(244558)

Base Temperature = 50 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1899 0.00 z 0.00 z 0.00 z 0.00 z 37.50 179.50 434.50 195.00 155.50 3.00 0.00 0.00 1005.00
1900 0.00 0.00 0.00 13.50 108.00 346.50 414.50 260.50 121.00 13.00 0.00 0.00 1277.00
1901 0.00 0.00 0.00 21.00 166.50 91.00 448.50 486.00 49.00 25.50 0.00 0.00 1287.50
1902 0.00 0.00 0.00 0.00 125.00 157.00 323.00 358.00 75.00 11.00 0.00 0.00 1049.00
1903 0.00 0.00 0.00 3.50 56.00 343.00 316.00 382.50 81.50 2.00 0.00 0.00 1184.50
1904 0.00 0.00 0.00 23.50 99.00 202.00 472.50 407.50 173.00 25.50 0.00 0.00 1403.00
1905 0.00 0.00 0.00 30.00 78.00 177.50 489.00 458.50 223.00 4.50 0.00 0.00 1460.50
1906 0.00 0.00 0.50 31.50 85.00 163.50 588.00 423.50 203.00 59.00 0.00 0.00 1554.00
1907 0.00 0.00 0.00 5.00 95.50 186.00 406.50 282.00 123.50 26.50 0.00 0.00 1125.00
1908 0.00 0.00 0.00 18.50 41.50 194.00 500.00 370.00 211.50 6.50 0.00 0.00 1342.00
1909 0.00 0.00 0.00 0.00 51.00 268.00 377.00 363.00 181.00 13.50 1.00 0.00 1254.50
1910 0.00 0.00 0.50 64.00 173.50 295.50 515.50 289.00 119.00 42.50 0.00 0.00 1499.50
1911 0.00 0.00 0.00 7.00 39.00 308.00 393.00 320.50 110.50 11.50 0.00 0.00 1189.50
1912 0.00 0.00 0.00 5.50 115.00 345.50 326.50 309.00 29.50 2.50 0.00 0.00 1133.50
1913 0.00 0.00 0.00 14.00 115.50 321.50 365.00 413.00 131.00 9.00 0.00 0.00 1369.00
1914 0.00 0.00 0.00 4.50 119.50 232.00 518.00 406.50 108.50 8.00 0.00 0.00 1397.00
1915 0.00 0.00 0.00 56.00 66.00 175.00 314.50 592.00 90.00 14.50 0.00 0.00 1308.00
1916 0.00 0.00 0.00 16.00 31.00 203.50 394.50 362.00 119.00 0.50 0.00 0.00 1126.50
1917 0.00 0.00 0.00 0.00 103.00 193.50 540.50 418.50 208.00 64.50 0.00 0.00 1528.00
1918 0.00 0.00 0.00 5.50 60.50 377.00 456.50 314.00 207.00 47.50 0.00 0.00 1468.00
1919 0.00 0.00 0.00 44.00 138.50 310.50 527.00 465.00 174.00 2.50 0.00 0.00 1661.50
1920 0.00 0.00 0.00 0.50 33.00 177.50 605.00 428.50 144.50 11.50 0.00 0.00 1400.50
1921 0.00 0.00 0.00 0.00 122.50 326.50 471.50 433.00 52.00 20.50 0.00 0.00 1426.00
1922 0.00 0.00 0.00 0.00 85.50 411.50 455.50 490.00 244.50 38.00 0.00 0.00 1725.00
1923 0.00 0.00 0.00 12.00 94.50 252.50 560.00 432.00 219.50 30.50 0.00 0.00 1601.00
1924 0.00 0.00 0.00 8.00 181.50 226.00 483.50 348.50 170.50 3.50 0.00 2.00 1423.50
1925 0.00 0.00 0.00 22.50 149.50 291.50 616.50 366.00 186.50 0.00 0.00 0.00 1632.50
1926 0.00 0.00 0.00 105.00 94.50 319.50 575.50 386.00 48.50 20.00 0.00 0.00 1549.00
1927 0.00 0.00 0.00 31.00 50.50 265.00 470.50 396.00 110.00 27.00 0.00 0.00 1350.00
1928 0.00 0.00 0.00 10.50 234.50 204.00 483.00 335.00 162.00 18.00 0.00 0.00 1447.00
1929 0.00 0.00 0.00 9.50 102.00 233.50 502.50 554.50 115.50 29.00 0.00 0.00 1546.50
1930 0.00 0.00 0.00 35.50 84.00 233.50 541.50 557.00 223.00 28.50 0.00 0.00 1703.00
1931 0.00 0.00 0.00 18.50 181.00 330.00 533.00 529.00 169.00 12.00 0.00 0.00 1772.50
1932 0.00 0.00 0.00 9.00 125.50 339.50 490.00 474.50 166.50 24.50 0.00 0.00 1629.50
1933 0.00 0.00 0.00 24.50 53.50 356.00 516.00 450.50 121.00 34.00 0.00 0.00 1555.50
1934 0.00 0.00 0.00 111.00 232.00 281.00 528.00 495.00 153.50 48.00 0.00 0.00 1848.50
1935 0.00 0.00 0.00 0.00 105.00 227.00 473.00 376.00 236.00 49.00 0.00 0.00 1466.00
1936 0.00 0.00 0.00 68.00 293.50 342.50 643.50 512.00 176.00 25.00 0.00 0.00 2060.50
1937 0.00 0.00 0.00 12.50 118.50 270.00 558.00 371.00 291.00 17.50 0.00 0.00 1638.50
1938 0.00 0.00 0.00 18.00 112.00 347.00 556.50 445.50 373.00 25.00 0.00 0.00 1877.00
1939 0.00 0.00 0.00 43.00 163.00 156.00 536.00 495.00 197.00 45.00 0.00 0.00 1635.00
1940 0.00 0.00 0.00 12.50 199.50 388.50 563.00 518.50 324.00 44.00 0.00 0.00 2050.00
1941 0.00 0.00 0.00 29.00 138.00 324.00 598.50 445.00 60.50 0.00 0.00 0.00 1595.00
1942 0.00 0.00 0.00 24.50 90.00 148.50 482.00 455.00 200.00 35.50 0.00 0.00 1435.50
1943 0.00 0.00 0.00 36.00 75.00 138.50 459.00 420.00 204.00 68.00 0.00 0.00 1400.50
1944 0.00 0.00 0.00 16.50 158.50 268.50 486.00 379.00 220.00 38.50 0.00 0.00 1567.00
1945 0.00 0.00 0.00 2.00 89.00 213.50 545.00 511.00 137.00 44.50 2.50 0.00 1544.50
1946 0.00 0.00 0.50 27.00 99.50 243.00 528.50 438.50 142.50 1.50 0.00 0.00 1481.00
1947 0.00 0.00 0.00 21.00 162.50 172.50 551.00 384.00 172.50 41.50 0.00 0.00 1505.00
1948 0.00 0.00 0.00 20.00 141.50 352.50 370.50 381.00 167.50 6.00 0.00 0.00 1439.00
1949 0.00 0.00 0.00 20.00 217.00 228.00 427.00 472.00 186.50 3.00 0.00 0.00 1553.50
1950 0.00 0.00 0.00 0.00 59.50 236.00 445.50 424.50 196.50 18.50 0.00 0.00 1380.50
1951 0.00 0.00 0.00 5.50 102.00 154.50 468.50 352.50 108.00 11.00 0.00 0.00 1202.00
1952 0.00 0.00 0.00 43.50 133.00 241.00 384.00 416.00 207.00 23.50 0.00 0.00 1448.00
1953 0.00 0.00 0.00 12.50 67.50 186.00 451.00 426.50 207.50 15.00 0.00 0.00 1366.00
1954 0.00 0.00 0.00 4.00 137.50 166.00 420.50 317.50 122.50 0.50 0.00 0.00 1168.50
1955 0.00 0.00 0.00 0.00 19.50 280.00 427.00 414.00 172.50 9.50 0.00 0.00 1322.50
1956 0.00 0.00 0.00 17.00 211.50 228.00 494.00 375.50 152.50 7.00 0.00 0.00 1485.50
1957 0.00 0.00 0.00 29.00 215.00 271.50 449.50 403.50 190.00 14.50 0.00 0.00 1573.00
1958 0.00 0.00 0.00 0.00 325.50 345.00 471.50 564.50 169.00 13.50 0.00 0.00 1889.00
1959 0.00 0.00 0.00 1.00 40.50 279.00 457.00 306.00 131.50 6.00 0.00 0.00 1221.00
1960 0.00 0.00 0.00 3.00 69.00 249.00 613.50 342.50 158.00 14.50 0.00 0.00 1449.50
1961 0.00 0.00 0.00 1.50 141.50 426.50 585.50 592.50 63.50 7.50 0.00 0.00 1818.50
1962 0.00 0.00 0.00 27.00 74.50 246.50 395.50 372.00 144.50 3.50 0.00 0.00 1263.50
1963 0.00 0.00 0.00 18.50 81.50 263.50 403.00 471.00 266.50 27.00 0.00 0.00 1531.00
1964 0.00 0.00 0.00 0.00 80.00 204.00 433.50 262.50 43.00 0.00 0.00 0.00 1023.00
1965 0.00 0.00 0.00 9.00 42.50 187.00 449.00 416.00 12.00 15.50 0.00 0.00 1131.00
1966 0.00 0.00 0.00 3.50 172.50 165.00 446.50 358.00 286.00 1.50 0.00 0.00 1433.00
1967 0.00 0.00 0.00 0.00 106.50 260.50 488.00 548.00 283.50 10.50 0.00 0.00 1697.00
1968 0.00 0.00 0.00 14.00 49.00 249.50 479.00 364.50 125.50 2.50 0.00 0.00 1284.00
1969 0.00 0.00 0.00 28.50 150.00 247.50 373.50 398.50 190.00 0.00 0.00 0.00 1388.00
1970 0.00 0.00 0.00 3.50 115.00 370.50 498.00 441.00 75.00 11.00 0.00 0.00 1514.00
1971 0.00 0.00 0.00 9.50 154.50 154.50 408.00 583.00 68.50 25.00 0.00 0.00 1403.00
1972 0.00 0.00 4.00 0.50 139.00 288.50 387.00 543.50 128.50 4.00 0.00 0.00 1495.00
1973 0.00 0.00 0.00 4.50 128.50 273.00 529.50 486.50 179.00 4.00 0.00 0.00 1605.00
1974 0.00 0.00 0.00 32.00 44.50 401.50 491.50 409.50 145.00 0.50 0.00 0.00 1524.50
1975 0.00 0.00 0.00 0.00 76.50 185.00 615.50 355.50 150.00 15.50 6.00 0.00 1404.00
1976 0.00 0.00 0.00 14.50 123.50 203.50 452.50 399.00 203.50 27.00 0.00 0.00 1423.50
1977 0.00 0.00 0.00 59.00 74.00 344.50 418.50 420.00 114.50 0.00 0.00 0.00 1430.50
1978 0.00 0.00 0.00 18.00 44.50 284.50 449.00 357.00 166.50 0.00 0.00 0.00 1319.50
1979 0.00 0.00 0.00 15.50 94.50 312.00 548.00 536.50 255.00 25.00 0.00 0.00 1786.50
1980 0.00 0.00 0.00 93.00 178.00 238.50 427.00 290.50 178.50 19.50 0.00 0.00 1425.00
1981 0.00 0.00 0.00 35.00 126.50 126.00 402.50 554.50 196.50 2.50 0.00 0.00 1443.50
1982 0.00 0.00 0.00 0.00 54.00 317.00 356.00 407.00 150.00 6.00 0.00 0.00 1290.00
1983 0.00 0.00 0.00 12.50 118.50 219.50 345.50 506.50 87.50 1.50 1.50 0.00 1293.00
1984 0.00 0.00 0.00 19.50 48.00 206.00 477.50 483.50 123.50 12.50 0.00 0.00 1370.50
1985 0.00 0.00 0.00 16.00 188.50 218.50 573.50 291.50 57.50 1.00 0.00 0.00 1346.50
1986 0.00 0.00 4.00 20.50 195.50 429.50 316.00 553.00 82.50 3.00 0.00 0.00 1604.00
1987 0.00 0.00 0.00 67.00 172.00 363.50 435.00 331.50 208.00 18.00 0.00 0.00 1595.00
1988 0.00 0.00 0.00 77.00 103.00 382.50 460.50 439.50 169.50 63.00 0.00 0.00 1695.00
1989 0.00 0.00 0.00 22.50 77.00 315.00 540.50 369.50 118.00 5.00 5.50 0.00 1453.00
1990 0.00 0.00 0.00 22.50 63.50 246.50 519.00 489.50 294.00 6.00 0.00 0.00 1641.00
1991 0.00 0.00 0.00 2.50 67.00 151.50 428.50 496.50 152.00 19.50 0.00 0.00 1317.50
1992 0.00 0.00 0.00 19.00 161.00 386.00 369.00 416.50 104.50 49.00 0.00 0.00 1505.00
1993 0.00 0.00 0.00 0.00 267.50 213.50 228.00 322.50 116.50 15.50 0.00 0.00 1163.50
1994 0.00 0.00 0.00 31.00 112.50 197.50 510.50 504.50 169.50 3.00 0.00 0.00 1528.50
1995 0.00 0.00 0.00 a 0.00 92.50 209.00 390.50 263.50 182.50 2.50 0.00 0.00 1140.50
1996 0.00 0.00 0.00 10.00 27.50 256.00 451.00 384.50 111.50 5.50 0.00 0.00 1246.00
1997 0.00 0.00 0.00 0.00 121.50 221.50 381.00 437.00 172.50 12.50 0.00 0.00 1346.00
1998 0.00 0.00 0.00 30.00 166.00 205.00 561.50 472.50 280.50 4.00 0.00 0.00 1719.50
1999 0.00 0.00 0.00 14.50 83.50 195.50 354.00 503.00 97.50 5.00 2.07 a 0.00 1255.07
2000 0.00 0.00 0.00 13.50 86.00 222.50 430.00 419.50 132.50 12.50 0.00 0.00 1316.50
2001 0.00 0.00 0.00 17.00 150.00 180.00 381.50 463.50 256.50 4.00 0.00 0.00 1452.50
2002 0.00 0.00 0.00 3.00 80.50 259.50 545.00 346.00 163.00 8.00 0.00 0.00 1405.00
2003 0.00 0.00 3.00 14.50 126.00 307.50 575.50 541.50 205.50 41.50 0.00 0.00 1815.00
2004 0.00 0.00 1.50 11.00 75.00 247.00 510.50 473.50 104.50 3.50 0.00 0.00 1426.50
2005 0.00 0.00 0.00 14.50 87.50 176.50 434.00 370.00 122.00 9.50 0.00 0.00 1214.00
2006 0.00 a 0.00 0.00 9.00 151.50 320.17 a 336.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 480.67
Period of Record Statistics
MEAN 0.00 0.00 0.13 19.25 114.30 256.04 467.91 420.03 159.06 17.09 0.17 0.02 1457.20
S.D. 0.00 0.00 0.63 21.74 58.23 74.25 79.37 82.21 65.68 16.42 0.85 0.19 203.06
SKEW 0.00 0.00 5.36 2.11 0.98 0.33 -0.18 -0.02 0.40 1.19 5.70 10.20 0.46
MAX 0.00 0.00 4.00 111.00 325.50 429.50 643.50 592.50 373.00 68.00 6.00 2.00 2060.50
MIN 0.00 0.00 0.00 0.00 19.50 91.00 228.00 195.00 12.00 0.00 0.00 0.00 1023.00
NO YRS 107 107 107 107 108 108 107 107 107 107 107 107 106