Climatological Report (Monthly)
Issued by NWS Chicago, IL

Home | 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
000
CXUS53 KLOT 011401
CLMLOT


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
858 AM CDT SUN OCT 1 2017

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

...THE ROMEOVILLE  WFO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1992 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              94   09/13/2005
                        09/08/2002
 LOW               29   09/23/1995
HIGHEST            93   09/23        MM      MM       91
                        09/22
                        09/21
LOWEST             45   09/30        MM      MM       49
AVG. MAXIMUM     79.2              75.6     3.6     78.3
AVG. MINIMUM     57.4              54.6     2.8     61.1
MEAN             68.3              65.1     3.2     69.7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.47   2008
 MINIMUM         0.86   2004
TOTALS           0.39R             3.13   -2.74     2.02
DAILY AVG.       0.01              0.10   -0.09     0.07
DAYS >= .01         4               7.5    -3.5       13
DAYS >= .10         2               4.8    -2.8        7
DAYS >= .50         0               1.9    -1.9        0
DAYS >= 1.00        0               0.9    -0.9        0
GREATEST
 24 HR. TOTAL    0.13   09/19 TO 09/19

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.0   09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL      49                91     -42       22
 SINCE 7/1         57                99     -42       24
COOLING TOTAL     158                94      64      171
 SINCE 1/1        855               847       8     1115
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.8
HIGHEST WIND SPEED/DIRECTION    21/310    DATE  09/04
HIGHEST GUST SPEED/DIRECTION    28/310    DATE  09/04

AVERAGE RH (PERCENT)     68


-  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.