WINONA, MINNESOTA

Monthly Total Growing Degree Days

(219067)

Base Temperature = 40 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201103
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
1893 0.00 0.00 5.50 112.50 486.18 a 978.00 1106.50 952.50 707.00 407.50 100.50 0.00 e 4856.18
1894 3.50 0.00 b 90.00 324.50 625.00 1017.93 a 1211.00 1072.50 754.50 328.50 10.50 14.31 e 5452.24
1895 0.00 a 11.00 35.00 379.00 657.50 905.00 933.00 976.00 793.00 190.50 81.43 b 1.00 4962.43
1896 0.00 6.00 8.00 345.50 741.00 851.00 976.00 954.00 455.00 231.50 18.50 2.00 4588.50
1897 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
1898 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
1899 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
1900 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
1901 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
1902 0.00 3.00 98.00 219.50 680.00 747.50 990.50 826.50 557.00 332.50 115.00 0.00 a 4569.50
1903 0.00 0.00 56.00 261.50 641.50 712.50 946.50 787.50 596.00 330.00 69.50 0.00 4401.00
1904 0.00 a 0.00 a 9.50 161.50 591.00 768.00 883.50 833.00 649.00 341.00 95.50 0.50 4332.50
1905 0.00 0.00 83.00 199.50 461.50 791.50 925.00 941.50 669.00 237.67 a 36.00 0.00 d 4344.67
1906 0.00 2.69 b 0.00 290.50 508.50 781.61 b 941.22 b 987.00 745.50 282.00 49.00 0.00 a 4588.02
1907 0.00 0.00 0.00 z 68.50 318.50 747.50 949.00 835.00 600.00 252.50 40.50 1.00 3812.50
1908 0.00 1.00 50.50 322.00 608.00 823.50 1044.50 0.00 z 886.00 375.50 71.00 0.00 4182.00
1909 0.00 0.00 1.00 102.00 588.00 864.50 1043.00 1112.00 641.50 287.50 129.00 12.50 4781.00
1910 0.00 0.00 265.00 434.00 500.50 952.00 1144.50 978.50 649.00 459.00 0.00 0.00 5382.50
1911 0.00 0.50 106.50 265.00 809.50 1044.83 a 1069.50 898.50 678.00 256.00 0.50 4.50 5133.33
1912 0.00 0.00 3.00 329.50 663.50 786.50 1037.00 905.00 706.50 374.00 63.50 7.50 4876.00
1913 0.00 5.00 53.00 332.50 586.50 1067.00 1064.50 1042.00 727.50 347.50 135.00 19.50 5380.00
1914 0.00 0.00 27.90 a 308.00 688.50 868.00 1126.50 981.50 699.00 535.00 113.50 2.50 5350.40
1915 0.00 1.00 3.00 519.00 433.50 703.50 881.50 784.00 660.00 406.00 91.50 2.50 4485.50
1916 1.50 1.50 45.50 226.50 574.50 706.00 1221.00 1026.00 609.00 315.00 66.50 8.50 4801.50
1917 0.00 0.00 14.00 155.00 457.50 702.50 1012.00 835.50 584.50 124.50 54.50 0.00 3940.00
1918 0.00 3.00 102.50 148.00 711.00 831.50 955.50 993.50 455.00 382.00 122.00 4.50 4708.50
1919 0.00 0.00 60.00 219.31 a 548.00 933.50 1094.00 915.00 780.00 a 301.00 8.00 0.00 4858.81
1920 0.00 0.00 119.00 159.00 587.50 915.00 943.00 872.50 768.50 512.00 4.50 3.00 4884.00
1921 0.00 8.50 82.50 408.00 680.45 a 1006.00 1163.50 963.50 762.50 352.50 16.50 1.03 a 5444.98
1922 0.00 0.00 25.50 211.50 780.50 910.50 916.50 1011.00 762.00 438.00 144.00 0.00 5199.50
1923 0.00 0.00 11.00 223.00 635.50 975.50 1127.00 911.00 694.50 273.00 79.50 10.50 4940.50
1924 0.00 0.00 4.00 247.50 385.50 744.00 912.50 888.50 542.00 531.00 87.50 0.00 4342.50
1925 0.00 0.00 a 88.00 404.00 500.50 845.00 974.00 993.50 805.00 142.50 27.50 0.00 4780.00
1926 0.00 0.50 16.50 197.00 709.00 740.00 1034.00 968.50 637.50 291.00 30.50 0.00 4624.50
1927 0.00 1.50 0.00 z 233.50 0.00 z 0.00 z 0.00 z 0.00 z 633.00 f 447.95 a 45.00 0.00 727.95
1928 3.50 0.00 88.50 224.42 d 764.00 769.50 1027.65 a 995.00 581.50 396.00 47.50 6.00 4903.57
1929 0.00 0.00 a 70.50 313.00 513.50 814.00 1047.11 d 935.50 461.50 i 345.00 6.60 e 0.00 4045.21
1930 0.00 b 45.00 35.00 342.00 0.00 z 860.50 0.00 z 0.00 z 0.00 z 348.50 183.00 0.00 a 1814.00
1931 0.00 c 3.63 a 26.00 345.00 571.00 1083.50 1206.50 1042.50 919.00 522.72 b 204.00 8.00 5931.85
1932 1.00 6.00 27.90 a 258.50 703.00 1049.00 1122.00 1008.00 613.00 273.50 47.59 a 8.50 5117.99
1933 2.00 0.50 30.50 259.50 643.25 a 1239.50 1203.00 996.00 862.76 a 296.50 54.50 9.00 5597.01
1934 2.50 2.50 43.00 258.00 959.45 a 1089.00 0.00 z 982.00 681.50 516.50 97.50 0.00 4631.95
1935 0.00 a 0.00 81.00 249.00 479.00 778.45 a 1225.50 1012.50 717.50 347.50 12.50 0.00 4902.95
1936 0.00 0.00 48.00 189.50 833.00 846.00 1269.00 1161.50 818.50 312.00 42.50 20.00 5540.00
1937 0.00 0.00 7.50 239.00 676.00 840.50 1132.50 1155.00 775.50 301.00 55.50 0.00 5182.50
1938 0.00 1.00 196.00 351.50 615.00 873.00 1030.00 1043.00 714.00 564.50 106.00 0.00 5494.00
1939 4.50 0.00 83.50 270.50 850.00 981.50 1135.00 993.50 872.50 361.50 54.50 36.00 5643.00
1940 0.00 0.00 14.00 227.50 597.00 930.50 1150.50 943.00 784.50 484.50 66.00 0.50 5198.00
1941 0.00 0.00 12.50 462.50 788.50 929.50 1080.00 1024.50 779.50 392.50 106.00 15.50 5591.00
1942 0.00 0.00 48.00 470.50 549.50 862.76 a 994.50 987.50 576.00 392.50 85.00 0.00 4966.26
1943 0.00 1.50 82.50 257.50 539.00 964.00 1099.47 a 994.50 586.00 311.00 5.00 0.00 h 4840.47
1944 23.50 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 145.96 d 0.00 a 169.46
1945 0.00 0.00 240.00 277.50 486.00 761.00 1022.50 0.00 z 731.50 306.00 49.50 0.00 3874.00
1946 0.00 0.00 192.50 373.50 517.50 811.50 1047.50 877.00 596.00 416.50 28.50 17.50 4878.00
1947 0.00 0.00 12.50 117.50 429.00 787.50 1030.00 1202.50 752.07 a 647.00 49.66 a 0.00 5027.72
1948 0.00 0.50 75.00 431.50 617.00 863.00 1119.50 1045.50 831.00 350.50 89.00 7.50 5430.00
1949 0.00 0.00 a 39.00 315.50 734.00 1039.00 1202.50 1132.50 603.00 489.80 a 101.50 0.50 5657.30
1950 0.50 0.00 3.00 106.50 596.50 897.00 984.50 928.28 d 748.50 553.50 71.50 0.00 a 4889.78
1951 0.00 4.50 9.30 a 138.62 a 784.50 831.50 1042.24 b 949.00 584.48 a 375.00 22.00 27.50 j 4741.15
1952 0.00 0.00 a 12.50 347.50 608.00 950.50 1115.00 970.00 723.50 234.00 125.00 0.00 5086.00
1953 0.00 a 0.00 b 50.50 124.00 619.00 982.50 1077.00 1096.00 730.00 595.50 170.00 7.50 5452.00
1954 0.00 23.00 13.00 343.50 472.50 1026.00 1091.00 954.50 663.50 294.00 73.00 0.00 4954.00
1955 0.00 0.00 18.00 395.50 697.50 786.72 a 1195.00 1120.00 690.50 341.50 9.00 0.00 5253.72
1956 0.00 0.00 0.00 92.50 543.00 956.50 938.00 949.50 557.50 479.50 110.00 0.00 4626.50
1957 0.00 3.50 9.50 266.90 a 493.50 815.50 1088.00 900.03 a 587.50 201.00 g 56.00 0.00 4220.43
1958 0.00 14.00 6.00 235.00 594.00 695.00 929.00 929.00 679.00 426.77 a 109.29 b 0.00 4617.05
1959 0.00 0.00 7.00 205.50 697.50 a 888.00 967.00 1053.50 695.50 188.50 11.00 5.00 4718.50
1960 0.00 0.00 17.00 259.50 560.50 714.50 953.50 965.50 720.50 339.00 41.00 12.50 4583.50
1961 0.00 0.00 27.50 86.00 483.00 843.00 977.50 967.50 638.00 372.00 35.50 8.50 4438.50
1962 0.00 0.00 9.50 198.50 701.50 800.50 886.50 930.50 556.00 413.00 20.00 39.50 4555.50
1963 0.00 0.00 65.50 267.00 484.50 864.81 d 1048.00 906.00 689.00 635.00 114.00 0.00 5073.81
1964 0.00 0.00 24.00 259.50 713.00 859.50 1116.50 895.00 610.00 302.50 199.00 0.00 4979.00
1965 0.00 0.00 0.00 112.00 654.50 800.00 938.55 b 895.00 509.50 347.00 71.50 5.00 4333.05
1966 0.00 7.00 71.00 149.00 422.00 874.00 1093.00 902.50 668.50 307.50 37.50 0.00 4532.00
1967 0.00 0.00 61.00 234.00 434.00 887.50 962.50 873.00 629.00 305.50 28.50 2.67 b 4417.67
1968 3.00 0.00 150.87 a 281.00 445.00 823.50 939.50 918.50 587.50 345.50 38.50 6.50 4539.37
1969 0.00 0.00 5.50 292.00 608.12 a 628.97 a 980.00 999.00 638.57 b 222.50 60.00 0.00 4434.65
1970 0.00 0.00 0.00 b 249.50 580.22 a 887.50 1073.50 978.64 b 642.00 375.50 23.00 7.23 a 4817.09
1971 0.00 0.00 5.00 289.50 436.00 960.00 908.00 872.50 669.50 491.00 45.50 0.00 4677.00
1972 0.00 0.00 10.50 143.50 684.00 760.00 875.00 909.00 589.50 204.50 15.50 0.00 4191.50
1973 5.50 0.00 84.50 160.50 408.50 857.00 1014.00 938.00 605.00 482.00 29.50 0.00 4584.50
1974 0.00 0.00 0.00 z 224.50 422.50 706.50 1057.00 822.00 466.00 254.50 54.00 0.00 4007.00
1975 0.00 0.00 0.00 87.00 600.50 775.50 1031.00 911.00 450.50 318.50 165.50 0.00 4339.50
1976 0.00 0.00 51.50 261.00 494.45 a 0.00 z 1027.50 933.50 612.50 209.00 0.00 z 0.00 a 3589.45
1977 0.00 c 3.77 b 99.50 467.07 a 886.50 830.00 1120.50 826.00 643.00 254.50 89.00 0.00 a 5219.84
1978 0.00 0.00 19.50 171.00 593.00 819.00 925.00 900.50 753.50 218.00 75.00 0.00 4474.50
1979 0.00 0.00 0.50 141.00 445.00 792.93 a 1021.50 899.00 703.00 265.00 49.50 1.00 4318.43
1980 0.00 0.00 20.50 289.00 654.00 818.50 1087.50 943.00 600.50 206.00 49.50 0.00 4668.50
1981 8.50 38.00 61.50 309.00 524.50 834.00 90.00 z 960.50 606.43 b 256.50 104.48 a 0.00 3703.41
1982 0.00 0.00 19.50 194.00 657.00 674.50 1037.00 923.50 598.50 328.50 39.50 20.00 4492.00
1983 0.00 1.00 53.50 0.00 z 475.00 877.50 1196.00 0.00 z 0.00 z 0.00 z 91.15 d 0.00 2694.15
1984 0.00 c 15.06 c 4.50 0.00 z 553.00 955.00 1028.50 0.00 z 661.00 414.88 a 0.00 z 5.68 a 3637.62
1985 0.00 a 0.00 66.50 445.00 0.00 z 862.50 1104.50 915.53 a 0.00 z 0.00 z 0.00 z 0.00 3394.03
1986 0.00 0.00 58.00 359.50 0.00 z 889.50 1027.50 804.50 580.00 278.50 10.00 0.00 4007.50
1987 0.00 0.00 102.00 434.50 734.50 969.50 1122.50 0.00 z 672.50 249.50 124.50 1.50 4411.00
1988 4.28 b 2.00 69.23 a 326.00 0.00 z 1075.50 1199.50 1138.50 0.00 z 281.00 67.00 0.53 b 4163.54
1989 7.50 0.00 50.00 i 293.00 0.00 z 892.50 1148.00 1027.50 718.00 455.00 23.50 0.00 4565.00
1990 0.00 2.00 90.93 a 344.50 557.00 897.50 1056.50 995.50 810.50 343.50 141.00 1.00 5239.93
1991 0.00 3.00 65.50 379.00 737.50 0.00 z 1049.00 1034.00 591.50 261.00 6.50 0.00 4127.00
1992 0.00 0.00 31.00 187.50 689.00 820.50 865.50 866.50 644.50 359.00 11.00 0.00 b 4474.50
1993 0.00 z 0.00 21.00 192.00 618.00 825.50 1016.50 1030.00 524.00 292.50 26.50 0.50 4546.50
1994 0.00 5.00 0.00 z 287.00 667.50 986.00 1007.50 901.50 794.00 440.00 90.50 3.50 5182.50
1995 0.00 0.00 123.00 152.00 601.00 991.50 1087.00 1161.50 643.00 364.00 2.00 0.00 5125.00
1996 0.00 a 4.50 16.50 184.50 516.50 894.00 977.00 1000.00 741.00 395.00 27.00 0.00 4756.00
1997 0.00 6.00 47.00 271.50 490.00 943.50 1011.00 924.50 755.50 443.00 13.50 0.50 4906.00
1998 0.00 b 27.00 104.00 398.50 858.00 846.00 1080.00 1028.50 882.00 438.50 107.00 71.50 5841.00
1999 0.00 a 5.19 a 87.50 365.50 711.50 884.50 1186.00 968.00 708.00 352.50 171.50 14.98 a 5455.17
2000 0.00 52.30 a 192.00 331.00 708.35 a 868.50 1053.00 1034.50 714.00 484.50 83.50 0.00 5521.65
2001 0.00 0.00 2.50 401.79 b 698.00 901.00 1126.00 1090.00 668.00 343.00 321.00 31.00 c 5582.29
2002 12.50 7.50 11.00 333.00 565.50 970.00 1182.50 1001.50 806.00 219.50 45.50 3.50 5158.00
2003 5.00 5.00 104.50 354.00 606.50 874.00 1064.50 1122.00 731.50 398.00 56.00 5.50 5326.50
2004 0.00 6.00 91.00 380.50 637.00 817.00 999.00 858.00 835.00 372.00 101.00 0.50 5097.00
2005 0.00 2.00 68.00 403.50 549.00 1025.50 1119.50 993.50 840.00 444.00 109.00 0.00 5554.00
2006 7.00 0.00 38.50 423.00 655.50 922.50 1179.50 1017.00 606.00 256.00 100.50 2.00 5207.50
2007 3.00 0.00 150.87 a 322.50 785.50 957.50 1071.00 1007.50 785.00 523.50 52.00 0.00 5658.37
2008 0.00 0.00 8.50 251.50 558.50 881.50 1076.00 994.50 785.00 389.00 127.00 0.00 5071.50
2009 0.00 10.50 101.50 314.50 662.00 883.50 918.50 956.50 794.00 49.00 z 0.00 z 0.00 z 4641.00
2010 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
2011 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
Period of Record Statistics
MEAN 0.89 3.16 51.95 271.16 606.25 872.65 1048.81 967.00 681.01 357.00 70.32 4.42 4946.11
S.D. 2.94 8.26 52.79 100.23 120.11 104.37 92.20 85.82 99.60 104.53 53.25 9.75 434.15
SKEW 5.17 4.14 1.62 0.09 0.28 0.42 0.10 0.34 0.00 0.45 1.37 4.10 0.14
MAX 23.50 52.30 265.00 519.00 959.45 1239.50 1269.00 1202.50 919.00 647.00 321.00 71.50 5931.85
MIN 0.00 0.00 0.00 68.50 318.50 628.97 865.50 784.00 450.50 124.50 0.00 0.00 3940.00
NO YRS 111 112 107 109 105 108 107 104 105 107 108 109 87