815
CDUS43 KDMX 180643
CLIALO
CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1243 AM CST THU DEC 18 2025
...............................
..THE WATERLOO IA CLIMATE SUMMARY FOR DECEMBER 17 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1895 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 38 1246 AM 58 1939 33 5 32
MINIMUM 26 915 AM -16 1914 17 9 24
AVERAGE 32 25 7 28
PRECIPITATION (IN)
YESTERDAY 0.00 0.28 1895 0.04 -0.04 0.09
MONTH TO DATE 0.32 0.83 -0.51 0.49
SINCE DEC 1 0.32 0.83 -0.51 0.49
SINCE JAN 1 35.20 35.68 -0.48 39.99
SNOWFALL (IN)
YESTERDAY 0.0 2.5 1990 0.3 -0.3 1.2
MONTH TO DATE 4.1 5.1 -1.0 1.9
SINCE DEC 1 4.1 5.1 -1.0 1.9
SINCE JUL 1 18.6 8.5 10.1 2.1
SNOW DEPTH 4
DEGREE DAYS
HEATING
YESTERDAY 33 40 -7 37
MONTH TO DATE 830 637 193 656
SINCE DEC 1 830 637 193 656
SINCE JUL 1 2003 2015 -12 1678
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 985 916 69 996
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 11.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 900 AM
LOWEST 69 200 PM
AVERAGE 83
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THE WATERLOO IA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 33 57 1923
2002
MINIMUM TEMPERATURE (F) 16 -23 1983
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 735 AM CST SUNSET 438 PM CST
DECEMBER 19 2025......SUNRISE 735 AM CST SUNSET 439 PM CST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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