519
CXUS53 KILX 011545
CLMMTO

CLIMATE REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1045 AM CDT THU OCT 01 2026

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

...THE MATTOON IL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1998 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             99   09/01/2011
 LOW              34   09/25/2001
HIGHEST           97   09/04         MM      MM       96
                       09/05
                       09/15
LOWEST            44   09/28         MM      MM       45
AVG. MAXIMUM    86.0               78.7     7.3     83.9
AVG. MINIMUM    63.0               56.1     6.9     56.2
MEAN            74.5               67.4     7.1     70.1
DAYS MAX >= 90    13                3.0    10.0        7
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.18   2012
 MINIMUM        0.21   2020
TOTALS          0.63               2.85   -2.22     0.50
DAILY AVG.      0.02               0.09   -0.07     0.02
DAYS >= .01        3                7.8    -4.8        3
DAYS >= .10        2                3.8    -1.8        2
DAYS >= .50        0                1.7    -1.7        0
DAYS >= 1.00       0                0.7    -0.7        0
GREATEST
 24 HR. TOTAL   0.55   09/20 TO 09/21               0.28


DEGREE DAYS
HEATING TOTAL      9                 61     -52       20
 SINCE 7/1         9                 65     -56       MM
COOLING TOTAL    305                133     172      178
 SINCE 1/1      1325               1091     234       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.3
HIGHEST WIND SPEED/DIRECTION    25/020    DATE  09/18
HIGHEST GUST SPEED/DIRECTION    39/030    DATE  09/18

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       1
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      3
HAZE                      2

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

$$