Climatological Report (Monthly)
Issued by NWS Chicago, IL

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
000
CXUS53 KLOT 011429
CLMLOT


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
815 AM CST TUE JAN 1 2019

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

...THE ROMEOVILLE  WFO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1992 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              71   12/03/2012
 LOW              -12   12/19/2016
                        12/18/2016
                        03/08/2000
HIGHEST            53   12/28        MM      MM       64
                        12/27
LOWEST             10   12/10        MM      MM       -9
AVG. MAXIMUM     40.2              34.7     5.5     34.0
AVG. MINIMUM     25.5              20.0     5.5     18.0
MEAN             32.9              27.4     5.5     26.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.85   2015
 MINIMUM         0.48   2017
TOTALS           3.17              2.25    0.92     0.48
DAILY AVG.       0.10              0.07    0.03     0.02
DAYS >= .01        10              10.9    -0.9        7
DAYS >= .10         6               5.5     0.5        2
DAYS >= .50         3               1.4     1.6        0
DAYS >= 1.00        0               0.4    -0.4        0
GREATEST
 24 HR. TOTAL    0.92   12/31 TO 12/31

SNOWFALL (INCHES)
RECORDS
 TOTAL           30.0   2000
TOTALS            0.9               9.3    -8.4      5.4
SINCE 7/1         6.6              10.2    -3.6      5.4
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               3.2    -3.2
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.4   12/03 TO 12/03

DEGREE_DAYS
HEATING TOTAL     989              1167    -178     1201
 SINCE 7/1       2406              2386      20     2312
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1163               862     301      875
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.6
HIGHEST WIND SPEED/DIRECTION    25/150    DATE  12/27
HIGHEST GUST SPEED/DIRECTION    36/160    DATE  12/27

AVERAGE RH (PERCENT)     83


-  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.