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

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CXUS53 KDMX 011347
CLMALO

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

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

...THE WATERLOO IA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2018

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            52   12/19        49       3       66  12/04
LOWEST              8   12/07       -11      19      -17  12/31
AVG. MAXIMUM     37.1              30.8     6.3     31.3
AVG. MINIMUM     21.2              13.5     7.7     12.5
MEAN             29.1              22.2     6.9     21.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      9              15.4    -6.4       16
DAYS MIN <= 32     29              29.2    -0.2       31
DAYS MIN <= 0       0               5.7    -5.7        5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.92   2015
 MINIMUM         0.16   1995
TOTALS           2.50              1.20    1.30     0.46
DAILY AVG.       0.08              0.04    0.04     0.01
DAYS >= .01         6               8.4    -2.4        7
DAYS >= .10         4               3.4     0.6        2
DAYS >= .50         1               0.5     0.5        0
DAYS >= 1.00        1               0.1     0.9        0

SNOWFALL (INCHES)
RECORDS
 TOTAL           34.0   5
                        0
                        -26215
TOTALS            3.5               9.9    -6.4      7.7
SINCE 7/1         7.3              13.3    -6.0      7.7
SNOWDEPTH AVG.      0                 4      -4        1
DAYS >= 1.0         2               3.1    -1.1        3
GREATEST
 SNOW DEPTH         1   12/30                          5  12/31
                        12/29                             12/30
                        12/03
 24 HR TOTAL      1.3   12/31 TO 12/31

DEGREE_DAYS
HEATING TOTAL    1101              1328    -227     1330
 SINCE 7/1       2842              2811      31     2721
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        890               799      91      720
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    32/070    DATE  12/01
HIGHEST GUST SPEED/DIRECTION    44/060    DATE  12/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     80

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  3
  0
  0
  0
  0
  3
HAZE                      8

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

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