Climatological Report (Monthly)
Issued by NWS St Louis, MO

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000
CXUS53 KLSX 011500
CLMSTL

CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1000 AM CDT SUN OCT 01 2023

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

...THE ST. LOUIS CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1874 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            104   09/01/2011
                       09/01/1984
                       09/04/1954
 LOW              32   09/28/1942
HIGHEST           95   09/04                          97
LOWEST            53   09/15                          45
AVG. MAXIMUM    84.8               81.1     3.7     81.4
AVG. MINIMUM    63.6               60.9     2.7     61.5
MEAN            74.2               71.0     3.2     71.4
DAYS MAX >= 90     5                5.0     0.0        3
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.04   1945
 MINIMUM           T   1979
TOTALS          2.58               2.96   -0.38     1.73
DAILY AVG.      0.09               0.10   -0.01     0.06
DAYS >= .01        7                7.3    -0.3        9
DAYS >= .10        4                4.5    -0.5        5
DAYS >= .50        1                1.9    -0.9        1
DAYS >= 1.00       1                1.0     0.0        0
GREATEST
 24 HR. TOTAL   1.99   09/26 TO 09/27

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
 24 HR TOTAL      MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       MM
DAYS >= 1.0        0                                   0
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL      0                 32     -32       29
 SINCE 7/1         0                 31     -31       MM
COOLING TOTAL    284                212      72      231
 SINCE 1/1      1854               1662     192       MM
..............................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    39/220    DATE  09/04
HIGHEST GUST SPEED/DIRECTION    53/220    DATE  09/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY          4


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               1
HEAVY RAIN                4     RAIN                       4
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       4     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

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

...MONTHLY...

TIED MOST DAYS WITH A HIGH TEMPERATURE OF AT LEAST 80 DEGREES (28
DAYS. ALSO SET IN 2019).


...DAILY...

RECORD RAINFALL VALUE OF 1.62 INCHES SET ON 09/27. PREVIOUS 1.28 IN
1945.

$$


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