Climatological Report (Monthly)
Issued by NWS Grand Rapids, MI

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CXUS53 KGRR 011719
CLMGRR


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
107 PM EDT THU JUN 1 2017

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

...THE GRAND RAPIDS MI (ASOS) CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              95   05/31/1934
 LOW               21   05/01/1903
HIGHEST            88   05/16        85       3       88  05/25
LOWEST             31   05/09        31       0       36  05/15
                        05/08
AVG. MAXIMUM     68.0              69.5    -1.5     71.6
AVG. MINIMUM     47.1              47.8    -0.7     49.3
MEAN             57.6              58.7    -1.1     60.4
DAYS MAX >= 90      0               0.3    -0.3        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      2               0.7     1.3        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.01   2001
 MINIMUM         0.72   1936
TOTALS           1.50              3.98   -2.48     3.01
DAILY AVG.       0.05              0.13   -0.08     0.10
DAYS >= .01        14              11.2     2.8       11
DAYS >= .10         5               7.0    -2.0        8
DAYS >= .50         0               2.3    -2.3        2
DAYS >= 1.00        0               0.9    -0.9        0
GREATEST
 24 HR. TOTAL    0.33   05/01 TO 05/01
                        05/20 TO 05/20

SNOWFALL (INCHES)
RECORDS
 TOTAL            5.5   1923
                        1902
 24 HR TOTAL      5.5   05/09/1923 TO 05/09/1923
                        05/10/1902 TO 05/10/1902
 SNOW DEPTH         T   MM
TOTALS            0.0                 T     0.0        T
SINCE 7/1        60.1              74.9   -14.8     61.1
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       0               0.1    -0.1        2
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   05/31 TO 05/31

DEGREE_DAYS
HEATING TOTAL     247               235      12      206
 SINCE 7/1       5613              6440    -827     5596
COOLING TOTAL      25                39     -14       71
 SINCE 1/1         30                47     -17       71

FREEZE DATES
RECORD
 EARLIEST     09/03/1946
 LATEST       06/04/1945
EARLIEST                        10/13
LATEST                          05/02
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.4
RESULTANT WIND SPEED/DIRECTION   2/267
HIGHEST WIND SPEED/DIRECTION    38/250    DATE  05/18
HIGHEST GUST SPEED/DIRECTION    47/250    DATE  05/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   60
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       7
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      0
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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