National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS53 KLOT 011340
CLMRFD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
840 AM CDT THU JUN 01 2023

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF MAY 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1905 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            106   05/31/1934
 LOW              24   05/10/1966
HIGHEST           89   05/31                          94  05/11
LOWEST            35   05/03                          36  05/04
                       05/04
AVG. MAXIMUM    75.2               71.2     4.0     73.9
AVG. MINIMUM    47.9               49.5    -1.6     53.2
MEAN            61.5               60.4     1.1     63.5
DAYS MAX >= 90     0                0.7    -0.7        5
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.6    -0.6        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       11.75   1996
 MINIMUM        0.48   1992
TOTALS          2.00               4.18   -2.18     2.54
DAILY AVG.      0.06               0.13   -0.07     0.08
DAYS >= .01        6               12.9    -6.9       14
DAYS >= .10        4                7.6    -3.6        5
DAYS >= .50        2                2.8    -0.8        2
DAYS >= 1.00       0                1.1    -1.1        0
GREATEST
 24 HR. TOTAL   0.80   05/12 TO 05/12               0.75

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   2019
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       35.5               37.1    -1.6       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM                                 0.0

DEGREE DAYS
HEATING TOTAL    136                199     -63      170
 SINCE 7/1      6043               6468    -425       MM
COOLING TOTAL     39                 54     -15      131
 SINCE 1/1        48                 61     -13       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.1
HIGHEST WIND SPEED/DIRECTION    30/300    DATE  05/01
HIGHEST GUST SPEED/DIRECTION    48/310    DATE  05/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.58
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       5
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

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

$$