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

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CDUS43 KDMX 172231
CLIALO

CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
531 PM CDT THU SEP 17 2026

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

...THE WATERLOO IA CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
VALID TODAY AS OF 0520 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         73    205 PM  95    1925  77     -4       77
                                      1988
  MINIMUM         65    537 AM  32    1916  52     13       61
  AVERAGE         69                        64      5       69

PRECIPITATION (IN)
  TODAY            0.79          3.06 1914   0.10   0.69     0.05
  MONTH TO DATE    2.74                      1.84   0.90     0.52
  SINCE SEP 1      2.74                      1.84   0.90     0.52
  SINCE JAN 1     32.52                     28.94   3.58    31.18

SNOWFALL (IN)
  TODAY            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       0

DEGREE DAYS
 HEATING
  TODAY            0                         4     -4        0
  MONTH TO DATE   16                        37    -21       50
  SINCE SEP 1     16                        37    -21       50
  SINCE JUL 1     17                        50    -33       65

 COOLING
  TODAY            4                         3      1        4
  MONTH TO DATE  117                        70     47       81
  SINCE SEP 1    117                        70     47       81
  SINCE JAN 1    945                       876     69      888
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED     4.7


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  THUNDERSTORM
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     84           300 PM
 AVERAGE    92

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


THE WATERLOO IA CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   76        93      1955
 MINIMUM TEMPERATURE (F)   52        28      1929


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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