Climatological Report (Monthly)
Issued by NWS

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301
CXUS53 KGRR 011855 CCA
CLMLAN

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

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

...THE LANSING MI CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1864 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              96   05/28/1874
 LOW               19   05/10/1966
HIGHEST            87   05/17        85       2       86  05/28
                        05/16
LOWEST             28   05/08        30      -2       33  05/15
AVG. MAXIMUM     68.6              68.8    -0.2     69.8
AVG. MINIMUM     46.9              46.7     0.2     47.7
MEAN             57.7              57.7     0.0     58.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      2               1.1     0.9        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.44   2004
 MINIMUM         0.62   1977
TOTALS           2.49              3.36   -0.87     2.99
DAILY AVG.       0.08              0.11   -0.03     0.10
DAYS >= .01        13              11.6     1.4       12
DAYS >= .10         7               6.7     0.3        7
DAYS >= .50         1               2.1    -1.1        3
DAYS >= 1.00        0               0.6    -0.6        0
GREATEST
 24 HR. TOTAL    0.56   05/24 TO 05/24

SNOWFALL (INCHES)
RECORDS
 TOTAL           11.5   1923
 24 HR TOTAL     11.5   05/09/1923 TO 05/09/1923
 SNOW DEPTH        MM   MM
TOTALS            0.0                 T     0.0        T
SINCE 7/1        30.2              51.1   -20.9     50.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       0               0.0     0.0        1
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     245               259     -14      247
 SINCE 7/1       5589              6657   -1068     5772
COOLING TOTAL      27                34      -7       61
 SINCE 1/1         35                41      -6       62

FREEZE DATES
RECORD
 EARLIEST     08/03/1894
 LATEST       07/15/1863
EARLIEST                        10/01
LATEST                          05/10
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.7
RESULTANT WIND SPEED/DIRECTION   2/276
HIGHEST WIND SPEED/DIRECTION    38/250    DATE  05/18
HIGHEST GUST SPEED/DIRECTION    52/280    DATE  05/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       5
LIGHT RAIN               16     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      1
HAZE                      6

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

&&

MAY 2017 ENDED UP WITH NEAR TO SLIGHTLY BELOW NORMAL TEMPERATURES ON
AVERAGE, DEPENDING ON LOCATION. FURTHER AWAY FROM LAKE MICHIGAN, THE
LANSING AREA ENDED UP EXACTLY NORMAL. CLOSER TO LAKE MICHIGAN AND
GRAND RAPIDS, SLIGHTLY BELOW NORMAL READINGS OCCURRED. WELL BELOW
NORMAL PRECIPITATION OCCURRED FOR MUSKEGON AND GRAND RAPIDS WITH
BELOW NORMAL PRECIPITATION FOR LANSING. NO SIGNIFICANT SEVERE
WEATHER OCCURRED DURING MAY, BUT MANY DAYS WERE WINDY.

THE FIRST THIRD OF THE MONTH STARTED OUT ON A COOL NOTE WITH MANY
BELOW NORMAL TEMPERATURES. FREEZING TEMPERATURES OCCURRED IN THE LOW
30S TO UPPER 20S OCCURRED ON MAY 8TH AND 9TH, RESULTING IN SOME
DAMAGE TO VULNERABLE CROPS. THE MIDDLE PORTION OF MAY WAS THE
WARMEST, PARTICULARLY ON THE 16TH AND 17TH WHEN HIGHS REACHED THE
MID TO UPPER 80S. MUSKEGON, GRAND RAPIDS, AND LANSING EXPERIENCED
THEIR WARMEST DAILY LOW TEMPERATURE ON RECORD FOR THE 17TH, WHEN
OVERNIGHT TEMPERATURES REMAINED IN THE UPPER 60S TO 70 DEGREES. A
COOL DOWN OCCURRED STARTING ON THE 19TH, THEN TEMPERATURES HELD NEAR
NORMAL FOR THE REMAINDER OF THE MONTH.

RAIN WAS LACKING FOR THE MONTH ESPECIALLY ALONG THE LAKESHORE REGION
NORTH OF HOLLAND AND WEST CENTRAL LOWER MICHIGAN IN GENERAL.
HOWEVER, CERTAIN AREAS RECEIVED HEAVIER RAINFALL FROM KALAMAZOO TO
JACKSON WITH DOUBLE OR TRIPLE THE AMOUNT OF RAIN THAT THE OTHER
REGIONS RECEIVED. THIS WAS A RESULT OF A MORE ACTIVE THUNDERSTORM
TRACK ACROSS THAT REGION.

WINDY CONDITIONS WERE FAIRLY COMMON DURING THE MONTH DUE TO THE
UPPER LEVEL WEATHER PATTERN AND SURFACE FRONT CONFIGURATIONS. MOST
LOCATIONS HAD WIND GUSTS OF 30 MPH OR GREATER FOR 10 OR MORE DAYS.
THE WINDIEST DAY FOR MANY PLACES WAS THE 18TH, WHEN WINDS GUSTED TO
44 MPH AT MUSKEGON, 47 MPH AT GRAND RAPIDS, AND 52 MPH AT LANSING.

$$

CAS/HOVING



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