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

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CDUS43 KLSX 100733
CLISTL

CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
233 AM CDT SUN AUG 10 2025

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

...THE ST. LOUIS CLIMATE SUMMARY FOR AUGUST 9 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1874 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         95    119 PM 110    1934  89      6       79
  MINIMUM         77    552 AM  54    1884  71      6       64
  AVERAGE         86                        80      6       72

PRECIPITATION (IN)
  YESTERDAY        0.00          2.03 2020   0.12  -0.12     0.00
  MONTH TO DATE    T                         1.07  -1.07     0.27
  SINCE JUN 1      8.96                      9.49  -0.53     9.78
  SINCE JAN 1     30.61                     27.36   3.25    30.57

SNOWFALL (IN)
  YESTERDAY        0.0           0.0  2015   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE JUN 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        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE JUN 1      0                         4     -4        0
  SINCE JUL 1      0                         0      0        0

 COOLING
  YESTERDAY       21                        15      6        7
  MONTH TO DATE  116                       135    -19      141
  SINCE JUN 1   1069                       962    107     1072
  SINCE JAN 1   1240                      1157     83     1385
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    SE (130)
  AVERAGE WIND SPEED    11.2


SKY COVER
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    74           500 AM
 LOWEST     47           200 PM
 AVERAGE    61

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


THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   89       105      1934
 MINIMUM TEMPERATURE (F)   70        54      1972


SUNRISE AND SUNSET
AUGUST 10 2025........SUNRISE   611 AM CDT   SUNSET   802 PM CDT
AUGUST 11 2025........SUNRISE   612 AM CDT   SUNSET   801 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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