Climatological Report (Daily)
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
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CDUS43 KDMX 210632
CLIALO
CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
132 AM CDT MON SEP 21 2026
...................................
...THE WATERLOO IA CLIMATE SUMMARY FOR SEPTEMBER 20 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 67 153 PM 96 2022 76 -9 73
MINIMUM 59 1159 PM 27 1991 51 8 55
AVERAGE 63 63 0 64
PRECIPITATION (IN)
YESTERDAY 0.51 2.65 1923 0.10 0.41 0.00
MONTH TO DATE 5.19 2.15 3.04 0.58
SINCE SEP 1 5.19 2.15 3.04 0.58
SINCE JAN 1 34.97 29.25 5.72 31.24
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 0
DEGREE DAYS
HEATING
YESTERDAY 2 4 -2 1
MONTH TO DATE 18 49 -31 51
SINCE SEP 1 18 49 -31 51
SINCE JUL 1 19 62 -43 66
COOLING
YESTERDAY 0 3 -3 0
MONTH TO DATE 126 79 47 92
SINCE SEP 1 126 79 47 92
SINCE JAN 1 954 885 69 899
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 13.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 400 AM
LOWEST 70 600 PM
AVERAGE 84
..........................................................
THE WATERLOO IA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 93 1937
2024
MINIMUM TEMPERATURE (F) 50 27 1918
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 656 AM CDT SUNSET 708 PM CDT
SEPTEMBER 22 2026.....SUNRISE 657 AM CDT SUNSET 707 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$