980
CXUS53 KLOT 011600
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1100 AM CDT TUE APR 01 2025

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF MARCH 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             88   03/29/1986
 LOW             -12   03/04/1873
HIGHEST           79   03/14                          73  03/03
LOWEST            18   03/02                          24  03/18
AVG. MAXIMUM    54.4               47.0     7.4     52.9
AVG. MINIMUM    34.5               31.0     3.5     35.1
MEAN            44.4               39.0     5.4     44.0
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                3.0    -3.0        0
DAYS MIN <= 32    11               19.9    -8.9       13
DAYS MIN <= 0      0                0.2    -0.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        5.58   1922
 MINIMUM        0.29   1910
TOTALS          2.99               2.45    0.54     3.59
DAILY AVG.      0.10               0.08    0.02     0.12
DAYS >= .01       13               10.8     2.2       10
DAYS >= .10       10                5.5     4.5        8
DAYS >= .50        2                1.4     0.6        2
DAYS >= 1.00       0                0.4    -0.4        0
GREATEST
 24 HR. TOTAL   0.93   03/04 TO 03/05               0.91

SNOWFALL (INCHES)
RECORDS
 TOTAL          23.1   1926
TOTALS           2.8                5.5    -2.7      1.0
SINCE 7/1       17.6               37.1   -19.5       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        2                2.0     0.0        1
GREATEST
 SNOW DEPTH        2   03/20                           0  MM
 24 HR TOTAL     1.7   03/20 TO 03/20                1.0

DEGREE DAYS
HEATING TOTAL    630                808    -178      642
 SINCE 7/1      4765               5277    -512       MM
COOLING TOTAL      0                  2      -2        0
 SINCE 1/1         0                  2      -2       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.2
HIGHEST WIND SPEED/DIRECTION    39/030    DATE  03/11
HIGHEST GUST SPEED/DIRECTION    49/030    DATE  03/11
                                49/250          03/30
                                49/280          03/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.64
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       5
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       3
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                6     SLEET                      2
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

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

$$