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

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969
CDUS43 KDMX 170634
CLIALO

CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
134 AM CDT THU SEP 17 2026

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

...THE WATERLOO IA CLIMATE SUMMARY FOR SEPTEMBER 16 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1895 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         73    406 PM  97    1931  77     -4       90
  MINIMUM         53    142 AM  31    1984  52      1       63
  AVERAGE         63                        65     -2       77

PRECIPITATION (IN)
  YESTERDAY        T             2.60 1921   0.10  -0.10     0.36
  MONTH TO DATE    1.95                      1.74   0.21     0.47
  SINCE SEP 1      1.95                      1.74   0.21     0.47
  SINCE JAN 1     31.73                     28.84   2.89    31.13

SNOWFALL (IN)
  YESTERDAY        0.0          MM      MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE SEP 1      0.0                       0.0    0.0      0.0
  SINCE JUL 1      0.0                       0.0    0.0      0.0
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  YESTERDAY        2                         4     -2        0
  MONTH TO DATE   16                        33    -17       50
  SINCE SEP 1     16                        33    -17       50
  SINCE JUL 1     17                        46    -29       65

 COOLING
  YESTERDAY        0                         3     -3       12
  MONTH TO DATE  113                        67     46       77
  SINCE SEP 1    113                        67     46       77
  SINCE JAN 1    941                       873     68      884
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    SE (130)
  AVERAGE WIND SPEED     7.1


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           100 AM
 LOWEST     66           100 PM
 AVERAGE    82

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


THE WATERLOO IA CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        95      1925
                                             1988
 MINIMUM TEMPERATURE (F)   52        32      1916


SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE   652 AM CDT   SUNSET   716 PM CDT
SEPTEMBER 18 2026.....SUNRISE   653 AM CDT   SUNSET   714 PM CDT


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




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