Climatological Report (Monthly)
Issued by NWS Chicago, IL

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CXUS53 KLOT 011401
CLMRFD


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

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1905 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             103   09/07/1939
 LOW               24   09/28/1942
HIGHEST            93   09/23                         92  09/06
LOWEST             42   09/02                         49  09/28
                                                          09/27
AVG. MAXIMUM     79.1              75.4     3.7     79.1
AVG. MINIMUM     53.8              52.4     1.4     59.5
MEAN             66.5              63.9     2.6     69.3
DAYS MAX >= 90      6               1.1     4.9        1
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.3    -0.3        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.68   1961
 MINIMUM         0.05   1979
TOTALS           0.51              3.35   -2.84     2.97
DAILY AVG.       0.02              0.11   -0.09     0.10
DAYS >= .01         4               8.3    -4.3        9
DAYS >= .10         1               5.3    -4.3        4
DAYS >= .50         0               2.3    -2.3        2
DAYS >= 1.00        0               0.8    -0.8        2
GREATEST
 24 HR. TOTAL    0.39   09/19 TO 09/19           09/07 TO 09/08
                                                          09/21 TO 09/21
                                                          09/21 TO 09/21

DEGREE_DAYS
HEATING TOTAL      75               117     -42       24
 SINCE 7/1         82               131     -49       24
COOLING TOTAL     127                84      43      160
 SINCE 1/1        811               811       0     1077
..................................................

WIND (MPH)
AVERAGE WIND SPEED              6.5
HIGHEST WIND SPEED/DIRECTION    26/220    DATE  09/26
HIGHEST GUST SPEED/DIRECTION    32/200    DATE  09/26


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       1
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

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

$$



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