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

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CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1004 AM CST MON JAN 01 2024

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

...THE ST. LOUIS CLIMATE SUMMARY FOR THE YEAR OF 2023...

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

WEATHER         OBSERVED          NORMAL  DEPART
                VALUE   DATE(S)   VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH            115   07/14/1954
 LOW             -22   01/05/1884
HIGHEST          104   08/25
LOWEST            11   01/31
AVG. MAXIMUM    70.3               66.8     3.5
AVG. MINIMUM    50.5               48.0     2.5
MEAN            60.4               57.4     3.0
DAYS MAX >= 90    54
DAYS MAX <= 32     4
DAYS MAX >= 100    6
DAYS MIN <= 32    55
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       61.24   2015
 MINIMUM       20.69   1953
TOTALS         33.14              41.70   -8.56
DAYS >= .01      106
DAYS >= .10       58
DAYS >= .50       21
DAYS >= 1.00       7
GREATEST
 24 HR. TOTAL   1.99  09/26 TO 09/27
                      03/23 TO 03/24

SNOWFALL (INCHES)
RECORDS
 TOTAL          63.3   1912
 24 HR TOTAL    20.0   03/30/1890 TO 03/31/1890
TOTALS           3.0               16.6   -13.6
SINCE 7/1        0.5                4.1    -3.6
DAYS >= TRACE     16
DAYS >= 1.0        1
GREATEST
 SNOW DEPTH        2   01/25
 24 HR TOTAL     2.1   01/25

DEGREE DAYS
HEATING TOTAL   3493               4433    -940
 SINCE 7/1      1263               1705    -442
COOLING TOTAL   1942               1713     229
................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    52/290    DATE  07/29
HIGHEST GUST SPEED/DIRECTION    79/290    DATE  07/29


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             53     HAIL                       2
FOG W/VIS <= 1/4 MILE     2

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


...ANNUAL...

TIED 2ND WARMEST CALENDAR YEAR ON RECORD (60.4 DEGREES).

MOST DAYS WITH A HIGH TEMPERATURE OF AT LEAST 80 DEGREES (151 DAYS).
PREVIOUS RECORD WAS 150 DAYS IN 2007.

TIED LEAST DAYS WITH A HIGH TEMPERATURE LESS THAN OR EQUAL TO 32 DEGREES (4 DAYS).

LEAST DAYS WITH A LOW TEMPERATURE LESS THAN OR EQUAL TO 32 DEGREES (55 DAYS).

TIED LEAST DAYS WITH A LOW TEMPERATURE LESS THAN 10 DEGREES (0 DAYS).

3RD LEAST SNOWIEST YEAR (3.0 INCHES).

TIED 4TH LEAST NUMBER OF DAYS WITH MEASURABLE SNOWFALL (5 DAYS).


...SEASONAL...

TIED 10TH WARMEST METEOROLOGICAL FALL ON RECORD (61.7 DEGREES).

MOST CONSECUTIVE DAYS WITH A HEAT INDEX OF AT LEAST 110 DEGREES (6
DAYS FROM 08/20 TO 08/25. HEAT INDEX RECORDS DATE BACK TO 1946).


...MONTHLY...

5TH WARMEST DECEMBER ON RECORD (45.0 DEGREES).

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

TIED MOST CONSECUTIVE DAYS WITH A LOW TEMPERATURE GREATER THAN OR
EQUAL TO 80 DEGREES WITHIN THE MONTH OF AUGUST (5 DAYS FROM 08/21 TO
08/25. ALSO SET FROM 08/17 TO 08/21/1983).

TIED LEAST OCCURRENCES WITH AT LEAST A TENTH OF AN INCH OF RAINFALL
IN THE MONTH OF APRIL (2 DAYS).

TIED 8TH LEAST SNOWIEST MARCH (TRACE).

6TH WARMEST FEBRUARY (43.1 DEGREES).

TIED LEAST SNOWIEST FEBRUARY (TRACE. 12 OTHER SUCH OCCASSIONS).

9TH WARMEST JANUARY (39.4 DEGREES).


...DAILY...

5 RECORD HIGH TEMPERATURES OR TIED (11/08, 10/27, 08/25, 05/07, AND
01/03).

7 RECORD HIGH MINIMUM TEMPERATURES SET OR TIED (10/26, 08/25, 08/24,
08/23, 07/28, 07/27, AND 07/26).

2 PRECIPITATION VALUES SET (09/27 AND 03/03).



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