Climatological Report (Seasonal)
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CXUS53 KILX 011937 CCB
CLSMTO

CHICLMMTO 000
TTAA00 KILX 011538


CLIMATE REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
237 PM CDT FRI SEP 1 2017

...CORRECTED THUNDERSTORM DAYS...

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

...THE MATTOON IL AIRPORT CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2017 TO 8/31/2017...

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            97   07/21        MM      MM       94
LOWEST             49   06/01        MM      MM       52
AVG. MAXIMUM     84.1              84.2    -0.1     84.9
AVG. MINIMUM     63.1              63.4    -0.3     66.0
MEAN             73.6              73.8    -0.2     75.4
DAYS MAX >= 90     13              14.4    -1.4       18
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.1    -0.1        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM           MM   MM
 MINIMUM           MM   MM
TOTALS          10.77             11.55   -0.78    11.73
DAILY AVG.       0.12                               0.13
DAYS >= .01        29                MM      MM       33
DAYS >= .10        18                MM      MM       22
DAYS >= .50         7                MM      MM        9
DAYS >= 1.00        5                MM      MM        2
GREATEST
 24 HR. TOTAL    1.34   MM                          3.01

DEGREE_DAYS
HEATING TOTAL       2                21     -19        5
 SINCE 7/1          1                 5      -4        5
COOLING TOTAL     819               833     -14      988
 SINCE 1/1        925               920       5     1063

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

WIND (MPH)
AVERAGE WIND SPEED              6.7
HIGHEST WIND SPEED/DIRECTION    45/320    DATE  08/21
HIGHEST GUST SPEED/DIRECTION    67/020    DATE  08/21

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.20
NUMBER OF DAYS FAIR           79
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             23     MIXED PRECIP               0
HEAVY RAIN               15     RAIN                      13
LIGHT RAIN               35     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      39     FOG W/VIS <= 1/4 MILE      3
HAZE                      4

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

$$



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