Climatological Report (Annual) Issued by NWS
000
CXUS53 KLOT 012009
CLAORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
209 PM CST SAT JAN 01 2022
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 2021...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 105 07/24/1934
LOW -27 01/20/1985
HIGHEST 95 08/24 MM MM 97 08/24
LOWEST -7 02/07 MM MM -2 02/14
AVG. MAXIMUM 61.5 59.5 2.0 61.7
AVG. MINIMUM 45.1 43.0 2.1 44.9
MEAN 53.3 51.2 2.1 53.3
DAYS MAX >= 90 22 16.7 5.3 31
DAYS MAX <= 32 31 43.4 -12.4 19
DAYS MIN <= 32 107 121.3 -14.3 103
DAYS MIN <= 0 5 6.5 -1.5 1
PRECIPITATION (INCHES)
RECORD
MAXIMUM 50.86 2008
MINIMUM 22.22 1962
TOTALS 30.15 37.86 -7.71 39.22
DAILY AVG. 0.08 0.10 -0.02 0.11
DAYS >= .01 118 125.8 -7.8 118
DAYS >= .10 61 71.6 -10.6 77
DAYS >= .50 16 23.8 -7.8 22
DAYS >= 1.00 6 8.3 -2.3 7
GREATEST
24 HR. TOTAL 1.91 08/24 TO 08/24 3.53
SNOWFALL (INCHES)
RECORDS
TOTAL 95.3 1978
SNOW DEPTH 29 01/14/1979
TOTALS 47.2 38.4 8.8 28.0
SINCE 7/1 1.9 9.6 -7.7 3.5
DAYS >= TRACE 51 MM MM 56
DAYS >= 1.0 13 11.4 1.6 13
GREATEST
SNOW DEPTH 21 02/16 3
24 HR TOTAL 6.3 01/31 TO 01/31 3.1
DEGREE DAYS
HEATING TOTAL 5415 5974 -559 5472
SINCE 7/1 1799 2220 -421 1989
COOLING TOTAL 1316 1003 313 1295
SINCE 1/1 1316 1003 313 1295
................................................................
WIND (MPH)
AVERAGE WIND SPEED 9.3
HIGHEST WIND SPEED/DIRECTION 41/240 DATE 12/11
41/200 12/15
HIGHEST GUST SPEED/DIRECTION 66/200 DATE 12/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.62
NUMBER OF DAYS FAIR 74
NUMBER OF DAYS PC 146
NUMBER OF DAYS CLOUDY 145
AVERAGE RH (PERCENT) 66
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 43 MIXED PRECIP 0
HEAVY RAIN 37 RAIN 48
LIGHT RAIN 137 FREEZING RAIN 0
LT FREEZING RAIN 4 HAIL 0
HEAVY SNOW 5 SNOW 12
LIGHT SNOW 49 SLEET 6
FOG 133 FOG W/VIS <= 1/4 MILE 6
HAZE 60
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$