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

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000
CXUS53 KLSX 021130
CLASTL

CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
501 AM CST TUE JAN 2 2018

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

...THE ST. LOUIS CLIMATE SUMMARY FOR THE YEAR OF 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             115   07/14/1954
 LOW              -22   01/05/1884
HIGHEST           108   07/22
LOWEST              2   12/31
                        12/27
AVG. MAXIMUM     70.0              66.2     3.8
AVG. MINIMUM     50.4              47.9     2.5
MEAN             60.2              57.1     3.1
DAYS MAX >= 90     59
DAYS MAX <= 32     16
DAYS MIN <= 32     68
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        61.24   2015
 MINIMUM        20.69   1953
TOTALS          36.65             40.96   -4.31
DAYS >= .01       105
DAYS >= .10        57
DAYS >= .50        22
DAYS >= 1.00       10
GREATEST
 24 HR. TOTAL    3.99   04/29 TO 04/30

SNOWFALL (INCHES)
RECORDS
 TOTAL           63.3   1912
 24 HR TOTAL     20.0U  03/30/1890 TO 03/31/1890
TOTALS            6.5              17.8   -11.3
SINCE 7/1         3.5               5.1    -1.6
DAYS >= TRACE      25
DAYS >= 1.0         3
GREATEST
 SNOW DEPTH         2   12/23
 24 HR TOTAL      2.1   12/23

U=UNOFFICIAL RECORD

DEGREE_DAYS
HEATING TOTAL    3605              4535    -930
 SINCE 7/1       1630              1765    -135
COOLING TOTAL    1959              1646     313
 SINCE 1/1       1959              1646     313
.................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    60/260    DATE  06/14
HIGHEST GUST SPEED/DIRECTION    71/250    DATE  06/14


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             60     HAIL                       3
FOG W/VIS <= 1/4 MILE    13

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


...ANNUAL...

3RD WARMEST YEAR ON RECORD (60.2 DEGREES).

MOST NUMBER OF OCCURRENCES OF A HIGH TEMPERATURE GREATER THAN OR
EQUAL TO 70 DEGREES (215 DAYS. PREVIOUS RECORD 203 DAYS IN 2012).

TIED 8TH LEAST NUMBER OF OCCURRENCES OF A LOW TEMPERATURE AT OR
BELOW FREEZING (68 DAYS).

TIED MOST NUMBER OF OCCURRENCES OF A LOW TEMPERATURE GREATER THAN
OR EQUAL TO 50 DEGREES (203 DAYS. TIED WITH 1915 AND 1902).

11TH LEAST SNOWIEST YEAR ON RECORD (6.5 INCHES).


...SEASONAL...

TIED 4TH WARMEST SPRING ON RECORD (60.3 DEGREES).

5TH WETTEST SPRING ON RECORD (20.61 INCHES).


...MONTHLY...

7TH DRIEST SEPTEMBER ON RECORD (0.27 INCHES).

8TH WARMEST JULY ON RECORD (84.3 DEGREES).

8TH WARMEST APRIL ON RECORD (62.3 DEGREES).

2ND WETTEST APRIL ON RECORD (10.37 INCHES).

WARMEST FEBRUARY ON RECORD (47.7 DEGREES).

MOST OCCURRENCES OF A HIGH TEMPERATURE GREATER THAN OR EQUAL
TO 70 DEGREES WITHIN THE MONTH OF FEBRUARY (9 DAYS).

MOST OCCURRENCES OF A LOW TEMPERATURE GREATER THAN OR EQUAL
TO 50 DEGREES WITHIN THE MONTH OF FEBRUARY (5 DAYS).

MOST CONSECUTIVE DAYS WITH A HIGH TEMPERATURE GREATER THAN OR
EQUAL TO 60 DEGREES WITHIN THE MONTH OF FEBRUARY (9 DAYS ENDING 02/24).

9TH DRIEST FEBRUARY ON RECORD (0.49 INCHES).


...DAILY...

10 RECORD HIGH TEMPERATURES SET OR TIED (11/24, 09/25, 09/22, 09/20,
07/22, 04/19, 03/20, 02/20, 02/11, AND 01/10).

1 RECORD LOW MAXIMUM TEMPERATURE SET (08/06).

9 RECORD HIGH MINIMUM TEMPERATURES SET OR TIED (09/26, 09/21, 07/22,
07/20, 06/13, 05/17, 02/28, 02/21, AND 02/20).

3 RECORD RAINFALL VALUES SET (10/09, 04/29, AND 04/05).

4 RECORD SNOWFALL VALUES TIED (11/01, 10/31, 10/28, AND 10/27).


GOSSELIN

$$


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