540
CDUS43 KILX 210636
CLIMTO
CLIMATE REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
136 AM CDT THU MAY 21 2026
...............................
..THE MATTOON IL AIRPORT CLIMATE SUMMARY FOR MAY 20 2026
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 69 418 PM MM MM 75 -6 78
MINIMUM 52 1159 PM MM MM 55 -3 59
AVERAGE 61 65 -4 69
PRECIPITATION (IN)
YESTERDAY T MM MM 0.12 -0.12 0.79
MONTH TO DATE 3.46 2.64 0.82 3.68
SINCE MAR 1 16.29 9.00 7.29 12.97
SINCE JAN 1 18.20 12.85 5.35 14.33
DEGREE DAYS
HEATING
YESTERDAY 4 3 1 0
MONTH TO DATE 130 100 30 78
SINCE MAR 1 812 1151 -339 857
SINCE JUL 1 4694 5261 -567 4790
COOLING
YESTERDAY 0 4 -4 4
MONTH TO DATE 25 42 -17 39
SINCE MAR 1 88 57 31 48
SINCE JAN 1 88 57 31 48
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WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 10.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 1200 AM
LOWEST 59 500 PM
AVERAGE 73
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THE MATTOON IL AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 MM MM
MINIMUM TEMPERATURE (F) 56 MM MM
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 534 AM CDT SUNSET 806 PM CDT
MAY 22 2026...........SUNRISE 534 AM CDT SUNSET 807 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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