CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
846 AM CST WED JAN 1 2020
...................................
...THE WATERLOO IA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2019...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2019
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 59 12/25 49 10 52 12/19
LOWEST 3 12/15 -11 14 8 12/07
AVG. MAXIMUM 39.6 30.8 8.7 37.1
AVG. MINIMUM 20.5 13.5 7.0 21.2
MEAN 30.0 22.2 7.8 29.1
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 8 15.4 -7.4 9
DAYS MIN <= 32 29 29.2 -0.2 29
DAYS MIN <= 0 0 5.7 -5.7 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 5.92 2015
MINIMUM 0.16 1995
TOTALS 0.92 1.20 -0.28 2.50
DAILY AVG. 0.03 0.04 -0.01 0.08
DAYS >= .01 8 8.4 -0.4 6
DAYS >= .10 1 3.4 -2.4 4
DAYS >= .50 1 0.5 0.5 1
DAYS >= 1.00 0 0.1 -0.1 1
SNOWFALL (INCHES)
RECORDS
TOTAL 34.0 5
0
-26215
TOTALS 4.0 9.9 -5.9 3.5
SINCE 7/1 12.0 13.3 -1.3 7.3
SNOWDEPTH AVG. 0 4 -4 0
DAYS >= 1.0 2 3.1 -1.1 2
GREATEST
SNOW DEPTH 2 12/12 1 12/30
12/11 12/29
12/03
24 HR TOTAL 2.1 12/11 TO 12/11
DEGREE_DAYS
HEATING TOTAL 1077 1328 -251 1101
SINCE 7/1 2609 2811 -202 2842
COOLING TOTAL 0 0 0 0
SINCE 1/1 928 799 129 890
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 8.8
HIGHEST WIND SPEED/DIRECTION 28/280 DATE 12/30
HIGHEST GUST SPEED/DIRECTION 42/300 DATE 12/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.40
NUMBER OF DAYS FAIR 16
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 8
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
0
1
0
0
1
0
1
HAZE 14
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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