Climatological Report (Monthly)
Issued by NWS Des Moines, IA

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CXUS53 KDMX 011346
CLMDSM

CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
745 AM CST TUE JAN 1 2019

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

...THE DES MOINES IA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER
2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1878 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              69   12/04/2017
                        12/03/2012
                        12/28/1984
 LOW              -22   12/23/1989
HIGHEST            55   12/19        55       0       69  12/04
                        12/18
LOWEST             10   12/07        -5      15      -15  12/31
AVG. MAXIMUM     39.1              34.0     5.1     35.3
AVG. MINIMUM     22.7              18.0     4.7     18.3
MEAN             30.9              26.0     4.9     26.8
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      7              12.5    -5.5       12
DAYS MIN <= 32     29              28.0     1.0       29
DAYS MIN <= 0       0               3.2    -3.2        4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.44   2015
 MINIMUM            T   2002
TOTALS           2.90              1.42    1.48     0.40
DAILY AVG.       0.09              0.05    0.04     0.01
DAYS >= .01         6               8.4    -2.4        9
DAYS >= .10         5               3.6     1.4        1
DAYS >= .50         3               0.8     2.2        0
DAYS >= 1.00        1               0.2     0.8        0

SNOWFALL (INCHES)
RECORDS
 TOTAL           28.2   2009
TOTALS            1.2               9.0    -7.8      6.7
SINCE 7/1         2.7              11.9    -9.2      6.7
SNOWDEPTH AVG.      0                 4      -4        0
DAYS >= 1.0         0               2.8    -2.8        3
GREATEST
 SNOW DEPTH         T   12/02                          4  12/31
                        12/03
                        12/04
 24 HR TOTAL      0.5   12/28 TO 12/28

DEGREE_DAYS
HEATING TOTAL    1049              1209    -160     1177
 SINCE 7/1       2553              2467      86     2232
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1439              1066     373     1306
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    31/220    DATE  12/27
HIGHEST GUST SPEED/DIRECTION    47/060    DATE  12/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     79

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  4
  0
  0
  2
  1
  0
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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