Climatological Report (Monthly)
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
001
CXUS53 KDMX 011434
CLMALO
CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
934 AM CDT THU OCT 01 2026
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...THE WATERLOO IA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1895 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 102 09/07/1939
09/06/1922
LOW 19
HIGHEST 92 09/01 90 2
LOWEST 45 09/23 33 12
MEAN 67.0 64.6 2.4
DAYS MAX >= 90 2 1.7 0.3
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 0 0.6 -0.6
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 13.35 2018
MINIMUM 0.42 1953
TOTALS 8.06 3.14 4.92
DAILY AVG. 0.27 0.10 0.17
DAYS >= .01 20
DAYS >= .10 11
DAYS >= .50 9
DAYS >= 1.00 1
SNOWFALL (INCHES)
TOTALS 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0
DEGREE DAYS
HEATING TOTAL 62 109 -47
SINCE 7/1 63 121 -58
COOLING TOTAL 128 97 31
SINCE 1/1 956 903 53
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WIND (MPH)
HIGHEST GUST SPEED/DIRECTION 41/150 DATE 09/14
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 10 HAIL 0
SLEET 0 FOG 17
FOG W/VIS <= 1/4 MILE 1 HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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