Climatological Report (Monthly)
Issued by NWS Wilmington, OH

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000
CXUS51 KILN 011418
CLMDAY


CLIMATE REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
911 AM EST MON JAN 1 2018

...................................

...THE DAYTON CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1869 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              72   12/06/1998
                        12/02/1982
 LOW              -20   12/22/1989
HIGHEST            60   12/04        39      21       66  12/26
LOWEST             -5   12/31        24     -29        1  12/15
AVG. MAXIMUM     36.5              38.1    -1.6     36.6
AVG. MINIMUM     21.2              24.3    -3.1     24.0
MEAN             28.8              31.2    -2.4     30.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     12               9.6     2.4        9
DAYS MIN <= 32     26              23.6     2.4       26
DAYS MIN <= 0       3               0.9     2.1        0

PRECIPITATION (INCHES)
TOTALS           1.54              3.12   -1.58     2.99
DAILY AVG.       0.05              0.10   -0.05     0.10
DAYS >= .01        12              12.4    -0.4       12
DAYS >= .10         3               6.5    -3.5        7
DAYS >= .50         1               2.1    -1.1        2
DAYS >= 1.00        0               0.6    -0.6        1
GREATEST
 24 HR. TOTAL    0.71   12/23 TO 12/23           12/16 TO 12/17
                                                          12/13 TO 12/13
                                                          12/13 TO 12/13
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/17(00) TO 12/17(00)
                                                 12/13(00) TO 12/13(00)3
                                                 12/13(00) TO 12/13(00)3

SNOWFALL (INCHES)
TOTALS            8.6               4.5     4.1      4.1
SINCE 7/1         8.6               5.5     3.1      4.1
DAYS >= TRACE      12               4.6     7.4        9
DAYS >= 1.0         3               1.2     1.8        1
GREATEST
 24 HR TOTAL      3.3   12/29 TO 12/29           12/13 TO 12/13
                                                          12/13 TO 12/13
                                                          12/13 TO 12/13
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/13(00) TO 12/13(00)
                                                 12/13(00) TO 12/13(00)3
                                                 12/13(00) TO 12/13(00)3

DEGREE_DAYS
HEATING TOTAL    1113              1048      65     1068
 SINCE 7/1       2120              2159     -39     1841
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        899               891       8     1247
....................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
RESULTANT WIND SPEED/DIRECTION   6/244
HIGHEST WIND SPEED/DIRECTION    38/280    DATE  12/13
HIGHEST GUST SPEED/DIRECTION    47/290    DATE  12/13

SKY COVER
AVERAGE SKY COVER           0.70

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW               12     SLEET                      2
FOG                      17     FOG W/VIS <= 1/4 MILE      1
HAZE                      6

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$



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