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

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CXUS53 KDMX 011312
CLMALO

CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
709 AM CST MON JAN 1 2018

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

...THE WATERLOO IA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              67   12/03/2012
                        12/05/2001
                        12/04/1998
 LOW              -29   12/25/2000
                        12/10/1919
HIGHEST            66   12/04        49      17       43  12/26
LOWEST            -17   12/31       -11      -6      -17  12/18
AVG. MAXIMUM     31.3              30.8     0.5     28.3
AVG. MINIMUM     12.5              13.5    -1.0     15.9
MEAN             21.9              22.2    -0.3     22.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     16              15.4     0.6       14
DAYS MIN <= 32     31              29.2     1.8       29
DAYS MIN <= 0       5               5.7    -0.7        6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.92   2015
 MINIMUM         0.16   1995
TOTALS           0.46              1.20   -0.74     1.87
DAILY AVG.       0.01              0.04   -0.03     0.06
DAYS >= .01         7               8.4    -1.4        8
DAYS >= .10         2               3.4    -1.4        5
DAYS >= .50         0               0.5    -0.5        2
DAYS >= 1.00        0               0.1    -0.1        0

SNOWFALL (INCHES)
RECORDS
 TOTAL           34.0   5
                        0
                        -26215
TOTALS            7.7               9.9    -2.2     10.5
SINCE 7/1         7.7              13.3    -5.6     10.5
SNOWDEPTH AVG.      1                 4      -3        2
DAYS >= 1.0         3               3.1    -0.1        5
GREATEST
 SNOW DEPTH         5   12/31                          5  12/24
                        12/30                             12/20
                                                          12/19
 24 HR TOTAL      5.0   12/29 TO 12/29

DEGREE_DAYS
HEATING TOTAL    1330              1328       2     1323
 SINCE 7/1       2721              2811     -90     2312
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        720               799     -79      869
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.1
HIGHEST WIND SPEED/DIRECTION    38/310    DATE  12/13
HIGHEST GUST SPEED/DIRECTION    50/330    DATE  12/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW               10     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                     10

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

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