BOULDER CITY, NEVADA

Monthly Total Heating Degree Days

(261071)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200407
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
1931 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 30.00 449.00 689.50 1168.50
1932 721.50 467.00 224.00 98.50 35.00 5.00 0.00 0.00 0.00 70.00 205.00 758.00 2584.00
1933 706.00 678.50 226.50 175.50 97.00 3.00 0.00 0.00 0.00 8.00 206.00 519.50 2620.00
1934 483.00 265.00 26.00 21.50 3.50 4.00 0.00 0.00 3.50 14.50 209.50 522.00 1552.50
1935 590.50 349.50 351.00 79.00 27.50 0.00 0.00 a 0.00 0.00 74.50 388.50 536.50 2397.00
1936 545.00 460.50 196.00 77.00 6.00 0.00 0.00 0.00 0.00 65.50 240.50 583.00 2173.50
1937 1016.00 506.50 325.50 104.50 0.50 0.00 0.00 0.00 0.00 0.00 193.00 435.50 2581.50
1938 484.50 462.00 380.50 109.00 39.00 0.00 0.00 0.00 0.00 47.00 427.00 495.00 2444.00
1939 599.50 636.50 256.50 56.00 5.00 0.00 0.00 0.00 2.00 46.00 203.50 409.50 2214.50
1940 515.00 431.50 148.50 73.00 0.00 0.00 0.00 0.00 0.00 49.00 357.50 528.50 2103.00
1941 544.50 337.00 296.50 212.00 4.50 0.00 0.00 0.00 9.50 143.50 301.00 550.50 2399.00
1942 528.50 492.50 313.00 66.50 25.50 0.00 0.00 0.00 0.00 45.00 226.00 424.50 2121.50
1943 519.50 329.50 211.50 99.00 7.00 0.00 0.00 0.00 0.00 64.00 260.00 524.00 2014.50
1944 618.50 559.00 330.00 126.50 15.00 1.50 0.00 0.00 0.00 0.00 349.50 485.84 b 2485.84
1945 551.00 388.00 401.50 150.00 3.50 0.00 0.00 0.00 c 0.00 15.00 297.00 591.50 2397.50
1946 556.00 430.00 246.00 61.00 4.00 0.00 0.00 0.00 0.00 97.00 434.50 467.00 2295.50
1947 602.50 257.00 138.00 61.50 11.50 0.00 0.00 0.00 0.00 39.00 405.50 615.50 2130.50
1948 536.00 513.00 427.50 96.50 21.50 0.00 0.00 0.00 3.00 51.50 387.00 654.00 2690.00
1949 950.00 632.00 322.50 53.50 15.50 4.50 0.00 0.00 0.00 104.00 116.00 594.50 2792.50
1950 669.00 308.50 216.50 44.50 35.00 3.00 0.00 0.00 0.00 1.00 191.50 341.00 1810.00
1951 582.00 437.50 293.50 96.00 44.50 0.00 0.00 0.00 0.00 81.00 375.50 649.50 2559.50
1952 688.50 446.50 478.00 85.00 3.50 0.00 0.00 0.00 2.00 0.00 414.31 a 580.50 2698.31
1953 423.67 a 400.50 218.00 0.00 z 66.00 0.50 0.00 0.00 0.00 93.00 234.50 556.50 1992.67
1954 546.50 227.00 365.00 14.50 13.50 1.50 0.00 0.00 0.00 45.47 a 186.50 587.50 1987.47
1955 716.50 581.50 286.00 146.50 44.50 6.50 0.00 0.00 0.00 11.00 281.50 446.00 2520.00
1956 436.00 528.00 195.00 96.72 a 11.00 0.00 0.00 0.00 0.00 63.00 322.00 473.00 2124.72
1957 606.50 244.50 188.00 86.00 41.50 0.00 0.00 0.00 0.00 80.00 437.50 480.50 2164.50
1958 511.50 332.50 411.00 145.50 4.50 0.00 0.00 0.00 0.00 32.50 300.00 411.50 2149.00
1959 490.00 457.50 170.00 8.00 18.50 0.00 0.00 0.00 2.50 43.00 283.50 492.50 1965.50
1960 710.00 519.50 155.50 72.50 5.00 0.00 0.00 0.00 0.00 51.00 312.50 563.50 2389.50
1961 512.00 311.50 237.50 60.50 9.00 0.00 0.00 0.00 0.00 86.50 368.50 630.50 2216.00
1962 541.50 367.50 374.00 5.00 32.00 1.00 0.00 0.00 0.00 17.00 180.00 466.50 1984.50
1963 639.50 169.50 255.50 150.52 a 2.07 a 0.00 0.00 0.00 a 0.00 a 6.50 250.00 515.00 1988.58
1964 624.81 b 473.50 399.50 122.00 65.50 0.00 0.00 0.00 a 0.00 0.00 370.50 456.50 2512.31
1965 474.00 361.50 321.00 229.14 a 43.00 0.00 0.00 0.00 12.00 10.50 225.50 582.50 2259.14
1966 635.50 490.00 189.00 53.50 1.50 0.00 0.00 0.00 0.00 27.50 248.00 543.00 2188.00
1967 553.00 319.00 172.00 249.50 25.50 3.00 0.00 0.00 0.00 6.00 187.00 673.00 2188.00
1968 535.00 221.00 194.00 94.00 16.50 4.00 0.00 0.00 0.00 12.00 231.00 656.50 1964.00
1969 469.00 489.00 324.50 52.50 22.00 0.00 0.00 0.00 0.00 69.00 220.50 468.50 2115.00
1970 536.50 281.00 282.00 163.00 5.50 0.00 0.00 0.00 0.00 70.00 226.00 587.00 2151.00
1971 560.50 351.00 231.50 103.00 58.00 1.00 0.00 0.00 2.50 180.50 344.00 668.50 2500.50
1972 599.50 282.50 44.50 44.00 6.00 0.00 0.00 0.00 0.00 90.50 412.00 659.50 2138.50
1973 694.50 396.00 429.00 117.00 11.50 0.00 0.00 0.00 0.00 47.50 341.50 487.00 2524.00
1974 751.00 414.50 181.87 a 71.00 6.50 0.00 0.00 0.00 0.00 47.53 a 303.00 639.50 2414.90
1975 614.00 460.50 381.62 b 264.50 39.00 0.00 0.00 0.00 0.00 88.50 313.50 0.00 z 2161.62
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 1.00 50.00 0.00 z 550.50 601.50
1977 0.00 z 279.00 417.50 64.00 78.00 0.00 0.00 0.00 0.00 3.00 230.50 407.50 1479.50
1978 554.50 393.00 216.00 150.50 28.42 a 0.00 0.00 0.00 3.50 22.00 361.00 703.00 2431.92
1979 790.50 505.00 320.00 69.50 j 41.91 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 364.50 498.50 2520.41
1980 519.00 357.00 396.00 147.32 b 57.50 7.00 0.00 0.00 0.00 93.00 237.00 325.50 2139.32
1981 396.00 358.50 331.00 51.00 11.50 0.00 0.00 0.00 0.00 75.00 185.50 466.50 1875.00
1982 612.00 390.50 324.50 136.00 10.50 0.00 0.00 0.00 12.00 65.00 385.50 629.50 2565.50
1983 540.95 a 379.00 290.00 198.50 22.50 0.00 0.00 0.00 3.00 17.50 283.50 487.50 2222.45
1984 469.00 368.00 166.00 105.50 0.00 0.00 0.00 0.00 0.00 111.00 301.50 612.50 2133.50
1985 579.00 462.00 291.00 43.00 1.50 0.00 0.00 a 0.00 2.59 a 24.00 360.00 461.00 2224.09
1986 336.00 285.50 138.50 50.00 7.50 0.00 0.00 0.00 21.50 47.00 237.00 541.00 1664.00
1987 622.00 386.00 324.00 31.00 7.00 0.00 0.00 0.00 0.00 12.00 317.00 679.50 2378.50
1988 576.08 a 316.00 200.50 96.00 30.50 0.00 0.00 0.00 0.00 0.00 284.50 529.00 2032.58
1989 620.50 403.50 84.50 26.50 17.00 0.00 0.00 0.00 1.00 59.50 169.50 451.00 1833.00
1990 574.50 437.00 169.50 19.00 3.50 0.00 0.00 0.00 0.00 22.50 228.50 699.50 2154.00
1991 576.50 186.00 382.50 65.50 40.00 1.00 0.00 0.00 0.00 83.00 294.50 551.00 2180.00
1992 570.50 330.00 265.00 11.00 0.00 0.00 0.00 0.00 0.00 21.00 353.00 669.00 2219.50
1993 592.00 445.50 172.50 38.50 4.00 9.00 0.00 0.00 0.00 29.50 366.50 534.00 2191.50
1994 453.00 471.50 118.50 76.00 11.50 0.00 0.00 0.00 0.00 44.00 492.50 536.00 2203.00
1995 583.50 194.00 289.00 128.50 37.00 10.00 0.00 0.00 0.00 19.00 91.00 414.50 1766.50
1996 410.00 256.00 142.50 19.50 10.00 0.00 0.00 0.00 0.00 126.00 203.50 487.50 1655.00
1997 443.50 335.50 91.00 115.00 0.00 0.00 0.00 0.00 a 0.00 53.00 232.00 550.00 1820.00
1998 453.00 450.00 254.00 177.50 21.50 0.00 a 0.00 0.00 0.00 37.50 261.00 504.00 2158.50
1999 404.50 303.50 122.45 a 219.31 a 7.50 6.50 0.00 0.00 b 0.00 4.00 129.00 402.00 1598.76
2000 248.50 j 0.00 z 0.00 z 0.00 z 1.00 m 0.00 i 0.00 h 0.00 f 0.00 m 67.50 g 307.50 g 321.50 g 0.00
2001 452.50 f 244.00 l 147.00 p 45.00 o 3.00 j 0.00 l 0.00 q 0.00 p 0.00 o 0.00 m 46.00 n 60.50 z 0.00
2002 155.50 v 72.00 v 0.00 z 0.00 z 0.00 z 0.00 z 0.00 o 0.00 n 0.00 o 32.50 o 97.50 o 249.50 p 0.00
2003 126.50 q 235.50 n 121.00 m 125.50 15.00 0.00 z 0.00 z 0.00 z 0.00 4.00 356.50 515.00 1016.00
2004 534.50 492.50 88.00 4.50 q 0.00 d 0.00 e 0.00 n 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1115.00
Period of Record Statistics
MEAN 573.12 394.87 256.02 96.81 20.53 1.07 0.00 0.00 1.18 47.05 289.00 539.20 2205.66
S.D. 114.99 109.61 103.17 60.45 20.82 2.30 0.00 0.00 3.46 37.93 87.75 91.94 280.03
SKEW 1.27 0.19 -0.03 0.79 1.43 2.32 0.00 0.00 4.08 0.95 0.09 0.11 -0.21
MAX 1016.00 678.50 478.00 264.50 97.00 10.00 0.00 0.00 21.50 180.50 492.50 758.00 2792.50
MIN 336.00 169.50 26.00 5.00 0.00 0.00 0.00 0.00 0.00 0.00 91.00 325.50 1552.50
NO YRS 67 68 68 66 69 67 66 66 69 69 69 69 63