OPTIMA LAKE, OKLAHOMA

Monthly Total Growing Degree Days

(346740)

Base Temperature = 40 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 199410
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
1985 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 27.38 a 27.38
1986 93.50 f 210.00 c 386.97 b 565.18 b 787.92 a 1038.75 b 1269.97 a 1115.00 930.52 a 491.87 a 155.36 b 2.58 a 6954.10
1987 82.09 d 109.76 c 177.98 b 448.45 a 794.00 997.50 b 1151.50 1141.00 841.03 a 530.32 c 219.83 a 81.50 6574.97
1988 31.53 b 79.75 e 200.00 362.59 a 547.50 h 1077.86 b 1159.18 c 1222.00 842.07 a 476.88 a 251.54 d 44.00 g 5703.40
1989 54.54 d 33.92 b 358.22 d 571.03 a 813.75 a 875.00 1137.00 1132.50 799.00 574.00 234.50 42.00 6625.47
1990 59.50 71.00 222.00 479.00 691.00 1167.50 1197.50 1195.50 993.50 0.00 z 321.50 56.00 6454.00
1991 5.00 148.00 280.00 527.00 901.58 a 1047.50 1192.00 1178.50 865.00 615.00 89.00 37.00 6885.58
1992 56.00 146.00 334.50 514.00 740.00 902.50 1181.00 995.00 919.00 577.50 110.50 12.50 6488.50
1993 8.50 39.50 228.00 391.00 758.50 1016.00 1261.50 1188.50 806.50 478.50 80.50 f 58.50 6235.00
1994 29.45 a 18.00 k 276.00 279.00 l 818.40 a 1194.00 1201.00 1147.50 859.50 554.00 0.00 z 0.00 z 6079.85
Period of Record Statistics
MEAN 40.83 104.74 273.74 482.28 788.14 1035.18 1194.52 1146.17 872.90 537.26 197.46 39.68 6643.63
S.D. 26.76 60.61 73.37 77.06 62.23 105.93 45.86 66.20 63.31 51.41 82.95 25.77 170.94
SKEW 0.01 0.43 0.26 -0.38 0.29 -0.01 0.57 -1.29 0.67 0.08 0.04 0.10 0.73
MAX 82.09 210.00 386.97 571.03 901.58 1194.00 1269.97 1222.00 993.50 615.00 321.50 81.50 6885.58
MIN 5.00 33.92 177.98 362.59 691.00 875.00 1137.00 995.00 799.00 476.88 89.00 2.58 6488.50
NO YRS 8 8 9 8 8 9 9 9 9 8 7 8 4