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

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000
CXUS53 KLSX 051938 CCA
CLASTL

CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1043 AM CST SAT JAN 02 2021

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

...THE ST. LOUIS CLIMATE SUMMARY FOR THE YEAR OF 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART
                VALUE   DATE(S)   VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH            115   07/14/1954
 LOW             -22   01/05/1884
HIGHEST           97   07/11                 MM
                       08/10
                       08/24
LOWEST             5   02/14                 MM
AVG. MAXIMUM    67.5               66.2     1.3
AVG. MINIMUM    48.9               47.9     1.0
MEAN            58.2               57.1     1.1
DAYS MAX >= 90    52
DAYS MAX <= 32     8
DAYS MAX >= 100    0
DAYS MIN <= 32    71
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       61.24   2015
 MINIMUM       20.69   1953
TOTALS         50.00              40.96    9.04
DAYS >= .01      120
DAYS >= .10       80
DAYS >= .50       35
DAYS >= 1.00      13
GREATEST
 24 HR. TOTAL   3.82   08/08 TO 08/09

SNOWFALL (INCHES)
RECORDS
 TOTAL          63.3   1912
 24 HR TOTAL    20.0   03/30/1890 TO 03/31/1890
TOTALS           8.0               17.7    -9.7
SINCE 7/1        0.3                5.1    -4.8
DAYS >= TRACE     36
DAYS >= 1.0        3
GREATEST
 SNOW DEPTH        3   01/11
 24 HR TOTAL     2.5   01/11 TO 01/11

DEGREE DAYS
HEATING TOTAL   4159               4535    -376
 SINCE 7/1      1575               1765    -190
COOLING TOTAL   1764               1646     118
 SINCE 1/1      1764               1646     118
................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    39/250    DATE  11/10
HIGHEST GUST SPEED/DIRECTION    57/250    DATE  11/10


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             55     HAIL                       4
FOG W/VIS <= 1/4 MILE     8

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

...ANNUAL...

TIED 17TH WARMEST YEAR ON RECORD (58.2 DEGREES). ALSO OCCURRED
IN 1987 AND 1922.

TIED 5TH LEAST OCCURRENCES WITH A MAXIMUM TEMPERATURE LESS THAN
OR EQUAL TO 32 DEGREES (8 DAYS).

3RD LEAST OCCURRENCES WITH A MINIMUM TEMPERATURE LESS THAN
20 DEGREES (8 DAYS).

11TH WETTEST YEAR ON RECORD (50.00 INCHES).

7TH MOST OCCURRENCES WITH AT LEAST A HALF INCH OF PRECIPITATION (35 DAYS).

18TH LEAST SNOWIEST YEAR ON RECORD (8.0 INCHES).


...SEASONAL...

2ND LEAST OCCURRENCES WITH A MINIMUM TEMPERATURE LESS THAN OR EQUAL
TO 32 DEGREES DURING METEOROLOGICAL SPRING (2 DAYS).

TIED 3RD LEAST SNOWIEST SPRING ON RECORD (TRACE).


...MONTHLY...

MOST CONSECUTIVE DAYS WITH A HIGH TEMPERATURE GREATER THAN OR EQUAL
TO 70 DEGREES WITHIN THE MONTH OF NOVEMBER (8 DAYS 11/03 THROUGH
11/10).

4TH WETTEST JULY ON RECORD (9.07 INCHES).

TIED MOST OCCURRENCES WITH AT LEAST ONE INCH OF RAINFALL WITHIN THE
MONTH OF JULY (4 DAYS...ALSO SET IN 1981).

6TH WETTEST JANUARY ON RECORD (6.49 INCHES).


...DAILY...

4 RECORD HIGH TEMPERATURES SET OR TIED (11/09, 10/22, 04/08, AND
02/02).

1 HIGH MINIMUM TEMPERATURE SET (11/09).

4 PRECIPITATION VALUES SET (08/09, 07/30, 07/15, AND 01/10).

1 SNOWFALL VALUE TIED (04/16).

$$


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