THIEF RIVER FALLS 2, MINNESOTA

Monthly Total Heating Degree Days

(218247)

Base Temperature = 65 F

File last updated on Apr 6, 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
1972 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 1196.50 1964.50 3161.00
1973 1756.50 1555.50 987.50 790.50 379.50 152.00 48.88 e 27.00 362.68 b 513.05 a 1292.50 1851.65 e 9717.27
1974 2188.00 1741.00 1615.00 911.79 b 597.50 185.00 32.07 b 0.00 z 0.00 z 0.00 z 1118.50 1475.50 9864.35
1975 0.00 z 0.00 z 1060.50 i 951.50 341.52 a 159.00 22.50 h 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1452.02
1976 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 985.50 i 1965.29 b 1965.29
1977 2138.47 b 1437.50 1074.50 515.69 a 69.48 b 40.50 9.00 133.82 a 290.50 593.00 1238.00 1531.00 f 7540.46
1978 2106.85 d 1743.00 1402.75 a 743.50 209.00 85.86 a 28.00 43.73 c 197.50 592.00 1329.50 1925.50 10407.20
1979 2227.50 1848.00 a 1395.50 902.00 501.50 83.28 a 11.00 88.72 b 183.50 689.00 1235.50 1396.50 10562.00
1980 1841.83 b 1672.00 1438.50 491.11 c 219.00 55.50 9.50 61.50 287.00 700.50 1060.38 d 1706.07 b 9542.89
1981 1660.80 d 1232.58 d 957.90 a 581.79 b 309.47 b 102.00 32.66 c 35.13 a 330.56 c 713.52 a 878.33 c 1644.19 e 8478.92
1982 2249.00 1580.50 1308.20 a 759.50 245.50 200.00 1.00 94.50 305.00 629.50 827.00 k 1433.00 8805.70
1983 1565.00 1263.50 1144.42 a 736.50 459.50 90.00 15.50 1.50 293.00 654.00 1057.00 2039.00 9318.92
1984 1792.00 1233.00 1318.50 598.50 371.00 58.50 23.50 23.00 378.50 575.00 1167.32 b 1228.00 j 7538.82
1985 766.50 r 1574.74 a 1091.00 603.00 224.00 212.50 49.00 114.38 b 385.50 757.50 1509.60 e 2025.85 a 8547.07
1986 1713.50 1555.00 1161.50 727.50 317.50 74.50 13.00 87.50 308.00 645.50 1395.00 1556.00 9554.50
1987 1643.00 1173.00 1157.00 472.00 214.00 77.50 22.50 66.50 192.50 758.00 0.00 z 1452.00 7228.00
1988 1937.00 1751.39 a 1229.50 615.00 157.00 12.00 7.00 29.50 259.00 756.50 0.00 z 0.00 z 6753.89
1989 1794.12 c 1879.00 1487.00 806.00 230.50 114.00 0.00 39.00 223.00 617.00 1347.50 1988.50 10525.62
1990 1480.50 1431.50 1107.00 699.50 329.50 68.50 23.50 32.50 188.00 631.50 1082.50 1787.50 8862.00
1991 1975.00 1323.50 1106.50 526.50 237.00 12.50 8.50 9.00 284.50 780.00 1300.00 1558.00 9121.00
1992 1561.50 1311.00 1133.00 771.00 233.00 133.50 113.00 107.00 289.00 672.00 1217.59 a 1837.78 a 9379.37
1993 1899.50 1623.00 0.00 z 692.50 306.50 181.50 60.50 53.50 357.00 735.50 1252.00 1599.00 8760.50
1994 2220.00 1727.50 1105.50 684.00 274.50 45.00 39.00 74.00 177.50 507.50 1013.00 1424.50 9292.00
1995 1767.00 a 1583.00 1198.31 b 854.00 364.00 44.00 23.00 25.00 311.90 a 671.00 0.00 z 1832.62 a 8673.82
1996 2196.50 1682.00 b 1590.50 943.00 394.00 85.50 28.50 18.50 245.00 j 658.50 1502.59 a 1917.50 11017.09
1997 1310.00 k 1506.50 1445.50 836.38 a 441.00 15.50 27.50 k 37.50 j 152.50 613.00 884.00 j 853.50 k 5010.38
1998 1734.45 a 1030.81 a 1168.00 504.50 165.00 130.50 23.50 k 2.50 i 155.00 576.50 1146.50 1651.27 a 8262.53
1999 1872.06 d 1276.15 b 1129.95 a 622.76 a 270.50 95.00 11.88 a 25.50 304.66 a 676.50 881.00 1413.94 d 8579.90
2000 0.00 z 1253.00 885.05 a 0.00 z 276.50 147.50 0.00 z 0.00 z 255.52 a 541.50 1123.33 c 1632.50 f 4482.40
2001 1614.30 d 1742.70 e 1326.36 c 688.97 a 0.00 z 0.00 z 32.50 32.03 a 235.20 e 669.27 c 831.00 1423.79 c 8596.10
2002 1602.00 0.00 z 1511.50 757.50 504.61 d 56.50 7.50 54.25 a 217.00 927.42 a 1201.50 1438.18 c 8277.96
2003 1799.00 1675.50 1294.25 a 629.00 303.50 82.50 0.00 z 23.50 258.62 a 0.00 z 1303.00 1464.48 b 8833.35
2004 2078.07 b 1148.00 g 1158.22 b 692.07 a 475.85 a 182.07 a 95.14 b 181.00 174.50 565.75 a 963.50 1588.23 a 8154.40
2005 1945.00 0.00 z 0.00 z 503.50 385.50 0.00 z 27.50 0.00 z 0.00 z 0.00 z 0.00 z 1519.00 d 4380.50
2006 1325.50 1171.50 g 1232.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 653.50 k 0.00 z 2557.50
2007 1091.00 i 1255.50 g 824.00 i 551.00 h 113.50 o 26.00 v 9.50 l 37.00 i 140.50 k 0.00 z 0.00 z 0.00 z 0.00
2008 1200.00 k 1047.00 l 951.00 i 507.00 i 317.50 i 79.00 i 19.00 h 0.00 z 0.00 z 0.00 z 0.00 z 229.00 z 0.00
2009 0.00 z 0.00 z 0.00 z 0.00 z 221.00 m 93.00 m 0.00 z 0.00 z 0.00 z 526.50 j 526.00 k 1097.50 l 0.00
2010 1135.50 k 1516.00 741.50 h 460.50 195.50 m 59.00 p 4.00 f 27.00 p 261.00 g 306.50 j 619.50 m 997.50 m 1976.50
2011 1344.00 j 588.50 r 547.50 q 394.00 l 144.50 r 94.50 k 6.50 p 4.00 n 80.00 r 213.50 p 327.00 u 628.00 q 0.00
2012 379.00 x 398.50 t 185.00 x 397.50 j 39.50 x 16.00 o 0.00 p 24.50 j 262.76 a 543.50 f 1110.56 c 999.00 l 1373.31
2013 1150.00 k 1243.00 f 988.00 k 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 1851.17 1514.55 1238.68 689.74 316.35 99.41 28.63 56.98 262.75 657.86 1176.06 1674.26 9487.81
S.D. 249.13 223.28 184.18 142.39 117.15 57.25 26.54 42.83 67.55 90.88 174.74 221.67 682.12
SKEW 0.02 -0.33 0.32 0.11 0.35 0.37 1.76 1.15 0.04 0.73 -0.10 0.29 0.29
MAX 2249.00 1879.00 1615.00 951.50 597.50 212.50 113.00 181.00 385.50 927.42 1509.60 2039.00 10562.00
MIN 1325.50 1030.81 885.05 460.50 69.48 12.00 0.00 1.50 152.50 507.50 831.00 1396.50 8478.92
NO YRS 29 29 30 32 31 30 27 26 29 28 27 28 13