Climatological Report (Monthly)
Issued by NWS

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CXUS53 KILX 011632 RRB
CLMMTO

CLIMATE REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
847 AM CST MON JAN 1 2018

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

...THE MATTOON IL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER
2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 9999 TO 9999

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              MM   MM
 LOW               MM   MM
HIGHEST            63   12/04        MM      MM       61
LOWEST             -3   12/27        MM      MM       -1
AVG. MAXIMUM     38.5              38.4     0.1     36.3
AVG. MINIMUM     22.5              24.2    -1.7     22.5
MEAN             30.5              31.3    -0.8     29.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     10               8.2     1.8        9
DAYS MIN <= 32     25              23.8     1.2       25
DAYS MIN <= 0       2               0.6     1.4        1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM           MM   MM
 MINIMUM           MM   MM
TOTALS           0.29              2.77   -2.48     0.53
DAILY AVG.       0.01              0.09   -0.08     0.02
DAYS >= .01         2                MM      MM        6
DAYS >= .10         2                MM      MM        2
DAYS >= .50         0                MM      MM        0
DAYS >= 1.00        0                MM      MM        0
GREATEST
 24 HR. TOTAL    0.15   12/23 TO 12/23              0.37

DEGREE_DAYS
HEATING TOTAL    1063              1044      19     1093
 SINCE 7/1       1993              2103    -110     1804
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1161              1057     104     1316
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.1
HIGHEST WIND SPEED/DIRECTION    39/290    DATE  12/13
HIGHEST GUST SPEED/DIRECTION    49/300    DATE  12/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                7     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      1
HAZE                      3

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

$$


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