Climatological Report (Monthly)
Issued by NWS
Issued by NWS
568
CXUS53 KLOT 011542
CLMMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1042 AM CDT MON JUN 01 2026
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 102 05/31/1934
LOW 28 05/12/1981
HIGHEST 87 05/17 95 05/15
LOWEST 32 05/02 40 05/09
AVG. MAXIMUM 70.4 71.1 -0.7 68.4
AVG. MINIMUM 51.0 52.0 -1.0 50.3
MEAN 60.7 61.5 -0.8 59.4
DAYS MAX >= 90 0 1.1 -1.1 1
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 1 0.0 1.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.67 2019
MINIMUM 0.25 1992
TOTALS 1.60 4.09 -2.49 1.63
DAILY AVG. 0.05 0.13 -0.08 0.05
DAYS >= .01 10 13.0 -3.0 11
DAYS >= .10 4 8.2 -4.2 5
DAYS >= .50 2 2.8 -0.8 1
DAYS >= 1.00 0 1.0 -1.0 0
GREATEST
24 HR. TOTAL 0.57 05/24 TO 05/24 0.50
DEGREE DAYS
HEATING TOTAL 190 178 12 205
SINCE 7/1 5349 5729 -380 MM
COOLING TOTAL 63 71 -8 38
SINCE 1/1 84 82 2 MM
................................................................
WIND (MPH)
AVERAGE WIND SPEED 9.8
HIGHEST WIND SPEED/DIRECTION 43/210 DATE 05/18
HIGHEST GUST SPEED/DIRECTION 79/210 DATE 05/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.60
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 17
NUMBER OF DAYS CLOUDY 9
AVERAGE RH (PERCENT) 58
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 1
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 4 FOG W/VIS <= 1/4 MILE 1
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$