National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS53 KDMX 011330
CLMALO

CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
823 AM CDT MON OCT 1 2012

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

...THE WATERLOO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             102   09/07/1939
                        09/06/1922
 LOW               19   09/30/1899
HIGHEST            95   09/04        90       5       93  09/01
LOWEST             29   09/24        33      -4       31  09/15
                        09/23
AVG. MAXIMUM     76.6              75.3     1.3     70.4
AVG. MINIMUM     46.1              50.7    -4.6     48.1
MEAN             61.4              63.0    -1.6     59.2
DAYS MAX >= 90      3               1.4     1.6        1
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      2               0.6     1.4        1
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.63   1941
 MINIMUM         0.42   1953
TOTALS           1.88              2.63   -0.75     2.66
DAILY AVG.       0.06              0.09   -0.03     0.09
DAYS >= .01         6               8.5    -2.5        8
DAYS >= .10         3               5.2    -2.2        5
DAYS >= .50         1               1.9    -0.9        2
DAYS >= 1.00        0               0.5    -0.5        0

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   5
                        0
                        -26215
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL     167               138      29      217
 SINCE 7/1        182               158      24      217
COOLING TOTAL      64                78     -14       51
 SINCE 1/1       1076               790     286      905
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.0
HIGHEST WIND SPEED/DIRECTION    39/340    DATE  09/05
HIGHEST GUST SPEED/DIRECTION    48/330    DATE  09/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.10
NUMBER OF DAYS FAIR           26
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       5
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

&&

SEPTEMBER STARTED OUT WARM ACROSS THE WATERLOO AREA BUT QUICKLY TOOK
A COOLER TURN AFTER THE FIRST WEEK AND ENDED UP BELOW AVERAGE FOR
THE MONTH. A RECORD LOW OF 29 WAS TIED ON SEPTEMBER 24. DROUGHT
CONDITIONS CONTINUED INTO SEPTEMBER WITH WATERLOO RUNNING A 3/4 INCH
RAINFALL DEFICIT FOR THE MONTH. ALMOST AN INCH OF RAIN FELL ON
SEPTEMBER 5...WITH ANOTHER TWO DAYS ACCOUNTING MOST OF THE MONTH`S
PRECIP. THE YEAR 2012 THUS FAR IS ALMOST 11.6 INCHES BELOW NORMAL
FOR PRECIPITATION.

$$