752
CDUS43 KDMX 180643
CLIMCW
CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1243 AM CST THU DEC 18 2025
...............................
..THE MASON CITY IA CLIMATE SUMMARY FOR DECEMBER 17 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1893 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 37 1159 PM 57 1939 29 8 30
MINIMUM 21 837 AM -18 1983 13 8 23
AVERAGE 29 21 8 27
PRECIPITATION (IN)
YESTERDAY 0.00 0.50 1977 0.04 -0.04 0.03
MONTH TO DATE 0.18 0.74 -0.56 0.11
SINCE DEC 1 0.18 0.74 -0.56 0.11
SINCE JAN 1 36.93 35.70 1.23 32.86
SNOWFALL (IN)
YESTERDAY 0.0 4.0 1990 0.4 -0.4 0.3
MONTH TO DATE 4.0 4.7 -0.7 0.9
SINCE DEC 1 4.0 4.7 -0.7 0.9
SINCE JUL 1 14.2 8.1 6.1 1.4
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 36 44 -8 38
MONTH TO DATE 839 699 140 703
SINCE DEC 1 839 699 140 703
SINCE JUL 1 2152 2356 -204 1921
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 759 602 157 626
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 12.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 800 AM
LOWEST 79 800 PM
AVERAGE 90
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THE MASON CITY IA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 29 61 1923
MINIMUM TEMPERATURE (F) 13 -26 1983
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 740 AM CST SUNSET 440 PM CST
DECEMBER 19 2025......SUNRISE 741 AM CST SUNSET 440 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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