514
CXUS53 KGRR 011012
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MICHIGAN
612 AM EDT TUE OCT 01 2024

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...THE GRAND RAPIDS CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1892 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             98   09/02/1913
                       09/16/1899
 LOW              27   09/28/1991
HIGHEST           88   09/15         87       1       91  09/05
                       09/16
                       09/21
LOWEST            41   09/08         35       6       44  09/19
AVG. MAXIMUM    79.2               73.9     5.3     74.2
AVG. MINIMUM    54.6               53.1     1.5     54.9
MEAN            66.9               63.5     3.4     64.6
DAYS MAX >= 90     0                0.7    -0.7        3
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.2    -0.2        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       11.85   1986
 MINIMUM        0.00   1979
TOTALS          1.32               3.43   -2.11     1.25
DAILY AVG.      0.04               0.11   -0.07     0.04
DAYS >= .01        5               10.2    -5.2        5
DAYS >= .10        3                6.4    -3.4        2
DAYS >= .50        1                2.2    -1.2        1
DAYS >= 1.00       0                0.8    -0.8        1
GREATEST
 24 HR. TOTAL   0.54   09/22 TO 09/22

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   2003
 SNOW DEPTH        T   MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE      0                0.0     0.0        0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM

DEGREE DAYS
HEATING TOTAL     38                118     -80       77
 SINCE 7/1        53                135     -82       MM
COOLING TOTAL    105                 73      32       73
 SINCE 1/1       759                725      34       MM

FREEZE DATES
RECORD
 EARLIEST     09/03/1946
 LATEST       06/04/1945
EARLIEST                        MM
LATEST                          04/25
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.9
RESULTANT WIND SPEED/DIRECTION   2/070
HIGHEST WIND SPEED/DIRECTION    24/060    DATE  09/27
HIGHEST GUST SPEED/DIRECTION    36/050    DATE  09/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   69
AVERAGE SKY COVER           0.41
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      2
HAZE                      1

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

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