Climatological Report (Monthly)
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
000
CXUS53 KLOT 011128
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
623 AM CDT MON OCT 1 2018

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             101   09/02/1953
                        09/01/1953
 LOW               29   09/23/1995
                        09/30/1984
                        09/28/1942
HIGHEST            93   09/20                         95  09/23
LOWEST             42   09/29                         49  09/06
AVG. MAXIMUM     77.5              74.8     2.7     79.7
AVG. MINIMUM     60.4              54.3     6.1     59.1
MEAN             69.0              64.6     4.4     69.4
DAYS MAX >= 90      5               1.0     4.0        7
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.1    -0.1        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        14.17   1961
 MINIMUM         0.01   1979
TOTALS           3.65              3.21    0.44     0.32
DAILY AVG.       0.12              0.11    0.01     0.01
DAYS >= .01        11               8.3     2.7        2
DAYS >= .10         7               5.4     1.6        1
DAYS >= .50         2               2.0     0.0        0
DAYS >= 1.00        1               0.8     0.2        0
GREATEST
 24 HR. TOTAL    1.79   09/03 TO 09/03

DEGREE_DAYS
HEATING TOTAL      56               105     -49       37
 SINCE 7/1         56               118     -62       42
COOLING TOTAL     182                92      90      179
 SINCE 1/1       1259               832     427      962
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.4
RESULTANT WIND SPEED/DIRECTION   2/064
HIGHEST WIND SPEED/DIRECTION    31/290    DATE  09/25
HIGHEST GUST SPEED/DIRECTION    47/310    DATE  09/25


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       6
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      0
HAZE                     11

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

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.