Climatological Report (Monthly)
Issued by NWS Detroit/Pontiac, MI

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CLMDTW

CLIMATE REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
157 PM EST TUE JAN 1 2019

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

...THE DETROIT MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              90   12/07/2009
 LOW              -24   10/07/5881
HIGHEST            60   12/02        MM      MM
LOWEST             17   12/09        MM      MM
AVG. MAXIMUM     40.5              36.1     4.4
AVG. MINIMUM     28.5              24.1     4.4
MEAN             34.5              30.1     4.4
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32      2              10.5    -8.5
DAYS MIN <= 32     23              23.9    -0.9
DAYS MIN <= 0       0               0.7    -0.7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.19   1967
 MINIMUM         0.42   1900
TOTALS           2.66              2.46    0.20
DAILY AVG.       0.09              0.08    0.01
DAYS >= .01        12              13.7    -1.7
DAYS >= .10         6               6.2    -0.2
DAYS >= .50         1               1.4    -0.4
DAYS >= 1.00        0               0.2    -0.2
GREATEST
 24 HR. TOTAL    0.88   12/31 TO 12/31
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           34.9   1974
                        0
                        0
TOTALS            0.5               9.6    -9.1
 LIQUID EQUIV    0.05              1.00   -0.95
SINCE 7/1         7.2              11.2    -4.0
 LIQUID 7/1      0.72
DAYS >= TRACE      13               8.5     4.5
DAYS >= 1.0         0               3.2    -3.2
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.3   12/29 TO 12/29
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL     940              1082    -142
 SINCE 7/1       2241              2297     -56
COOLING TOTAL       0                 0       0
 SINCE 1/1       1237               803     434

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST                        MM
LATEST                          MM
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.2
HIGHEST WIND SPEED/DIRECTION    31/230    DATE  12/28
HIGHEST GUST SPEED/DIRECTION    39/230    DATE  12/28

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         23

AVERAGE RH (PERCENT)     71


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

$$

---------------------------------------------------------------
MONTHLY CLIMATE DATA FOR NWS WHITE LAKE - DECEMBER 2018

...TEMPERATURE DATA...              ...PRECIPITATION DATA...
AVERAGE MAXIMUM...35.4              MONTHLY TOTAL..........2.51
AVERAGE MINIMUM...23.2              GREATEST DAILY TOTAL...0.81
MONTHLY AVERAGE...29.3              ON THE 31ST
                                    2018 TOTAL.............36.93

...HEATING DEGREE DAYS...           ...SNOWFALL DATA...
MONTHLY TOTAL............1099       MONTHLY TOTAL............3.6
2018-2019 SEASON TOTAL...2863       2018-2019 SEASON TOTAL...12.9

...COOLING DEGREE DAYS...
MONTHLY TOTAL....0
2018 TOTAL......524

================================================================

       SOUTHEAST MICHIGAN CLIMATE SUMMARY FOR DECEMBER 2018


DECEMBER 2018 MONTHLY STATISTICS AND RANKINGS
-----------------------------------------------------------------
SNOWFALL
                ACTUAL    NORMAL     DEPARTURE     RANKING
DETROIT AREA     0.5"       9.6"       -9.1"     4TH LEAST SNOWY
FLINT AREA       3.8"      11.8"       -8.0"    16TH LEAST SNOWY
SAGINAW          1.8"       9.0"       -7.2"     6TH LEAST SNOWY

SNOWFALL SINCE JULY 1*

                ACTUAL    NORMAL     DEPARTURE     RANKING
DETROIT AREA      7.2"     11.2"       -4.0"     43RD LEAST SNOWY
FLINT AREA       14.9"     14.7"       +0.2"     30TH SNOWIEST
SAGINAW          14.3"     12.9"       +1.4"     31ST SNOWIEST

      *NORMAL TO DATE (AS OF DECEMBER 31, 2018)

PRECIPITATION
                ACTUAL    NORMAL     DEPARTURE     RANKING
DETROIT AREA    2.66"      2.46"      +0.20"     50TH WETTEST
FLINT AREA      2.11"      1.92"      +0.19"     35TH WETTEST
SAGINAW         1.98"      1.86"      +0.12"     52ND WETTEST


PRECIPITATION SINCE JANUARY 1*

                ACTUAL    NORMAL     DEPARTURE     RANKING
DETROIT AREA    43.81"    33.47"     +10.34"      4TH WETTEST
FLINT AREA      36.41"    31.37"      +5.04"     16TH WETTEST
SAGINAW         31.30"    31.54"      -0.24"     45TH WETTEST

      *NORMAL TO DATE (AS OF DECEMBER 31, 2018)

AVERAGE TEMPERATURE
                ACTUAL    NORMAL     DEPARTURE     RANKING
DETROIT AREA     34.5      30.1       +4.4       20TH WARMEST
FLINT AREA       31.3      27.4       +3.9       25TH WARMEST
SAGINAW          31.4      27.3       +4.1       18TH WARMEST

AVERAGE HIGH TEMPERATURE
                ACTUAL    NORMAL     DEPARTURE     RANKING
DETROIT AREA     40.5      36.1       +4.4       22ND WARMEST
FLINT AREA       36.8      34.1       +2.7       36TH WARMEST
SAGINAW          35.8      33.5       +2.3       34TH WARMEST

AVERAGE LOW TEMPERATURE
                ACTUAL    NORMAL     DEPARTURE     RANKING
DETROIT AREA     28.5      24.1       +4.4       22ND WARMEST
FLINT AREA       25.8      20.8       +5.0       17TH WARMEST
SAGINAW          27.0      21.2       +5.8       12TH WARMEST


DETROIT AREA HAS A CLIMATE RECORD DATING TO NOVEMBER 1874
FLINT AREA HAS A CLIMATE RECORD DATING TO JANUARY 1921
SAGINAW HAS A CLIMATE RECORD DATING TO 1912


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