Climatological Report (Seasonal)
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CXUS53 KILX 011735
CLSDEC

CHICLMDEC 000
TTAA00 KILX 011714


CLIMATE REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1103 AM CST FRI DEC 1 2017

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

...THE DECATUR IL AIRPORT CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2017 TO 11/30/2017...

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            94   09/23        MM      MM       93
                        09/21
LOWEST             20   11/10        MM      MM       21
AVG. MAXIMUM     67.7              65.4     2.3     70.8
AVG. MINIMUM     45.8              43.8     2.0     50.0
MEAN             56.8              54.6     2.2     60.4
DAYS MAX >= 90      7               2.2     4.8        9
DAYS MAX <= 32      0               0.8    -0.8        0
DAYS MIN <= 32     20              16.7     3.3        6
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM           MM   MM
 MINIMUM           MM   MM
TOTALS           6.35              9.60   -3.25     8.72
DAILY AVG.       0.07                               0.09
DAYS >= .01        23                MM      MM       26
DAYS >= .10        12                MM      MM       14
DAYS >= .50         4                MM      MM        7
DAYS >= 1.00        1                MM      MM        3
GREATEST
 24 HR. TOTAL    1.23   MM                          1.33

DEGREE_DAYS
HEATING TOTAL     941              1076    -135      691
 SINCE 7/1        942              1081    -139      696
COOLING TOTAL     215               130      85      299
 SINCE 1/1       1121              1048      73     1434

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST                        MM
LATEST                          MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.0
HIGHEST WIND SPEED/DIRECTION    35/340    DATE  11/18
HIGHEST GUST SPEED/DIRECTION    44/210    DATE  10/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           51
NUMBER OF DAYS PC             19
NUMBER OF DAYS CLOUDY         21

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                9     RAIN                      12
LIGHT RAIN               29     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                      33     FOG W/VIS <= 1/4 MILE      5
HAZE                     10

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

$$


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