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

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478
CXUS53 KLSX 020900
CLSSTL

CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
337 AM CDT SAT JUN 2 2018

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

...THE ST. LOUIS CLIMATE SUMMARY FOR THE SEASON, FROM
3/1/2018 TO 5/31/2018...

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              98   05/26/1953
                        05/31/1934
 LOW               -5   03/05/1960
HIGHEST            96   05/27
LOWEST             24   04/07
                        03/14
AVG. MAXIMUM     65.6              66.5    -0.9
AVG. MINIMUM     46.6              47.0    -0.4
MEAN             56.1              56.8    -0.7
DAYS MAX >= 90      8
DAYS MAX <= 32      0
DAYS MIN <= 32     20
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        23.18   1927
 MINIMUM         3.86   1914
TOTALS          14.45             11.73    2.72
DAYS >= .01        34
DAYS >= .10        24
DAYS >= .50        10
DAYS >= 1.00        6
GREATEST
 24 HR. TOTAL    1.61   05/18

SNOWFALL (INCHES)
RECORDS
 TOTAL           28.8   1912
 24 HR TOTAL     20.4U  03/30/1912 TO 03/31/1912
TOTALS            1.6               2.7    -1.1
SINCE 7/1         7.1              17.7   -10.6
DAYS >= TRACE      13
DAYS >= 1.0         0
GREATEST
 SNOW DEPTH         T   04/02
 24 HR TOTAL      0.8   03/11

U=UNOFFICIAL RECORD

DEGREE_DAYS
HEATING TOTAL    1134               932     202
 SINCE 7/1       4605              4530      75
COOLING TOTAL     343               174     169
 SINCE 1/1        343               174     169
.................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    39/120    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    51/280    DATE  05/14


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             21     HAIL                       1
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.


...SEASONAL...

3RD MOST OCCURRENCES WITH A MAXIMUM TEMPERATURE GREATER THAN OR EQUAL
TO 90 DEGREES (8 DAYS).


...MONTHLY...

WARMEST MAY ON RECORD (75.4 DEGREES. PREVIOUS WARMEST 73.2 DEGREES
IN 2012).

MOST OCCURRENCES OF A HIGH TEMPERATURE GREATER THAN OR EQUAL TO 80
DEGREES WITHIN THE MONTH OF MAY (27 DAYS. PREVIOUS MOST 25 DAYS IN
1962).

MOST OCCURRENCES OF A LOW TEMPERATURE GREATER THAN OR EQUAL TO 60
DEGREES WITHIN THE MONTH OF MAY (27 DAYS. PREVIOUS MOST 25 DAYS IN
1896).

4TH COLDEST APRIL ON RECORD (49.8 DEGREES).

MOST OCCURRENCES OF A MINIMUM TEMPERATURE LESS THAN OR EQUAL TO 32
DEGREES WITHIN THE MONTH OF APRIL (10 DAYS. PREVIOUS MOST 8 DAYS
LAST SET IN 1982).

TIED 8TH WETTEST MARCH ON RECORD (7.12 INCHES).

MOST OCCURRENCES WITH AT LEAST A QUARTER INCH OF PRECIPITATION
WITHIN THE MONTH OF MARCH (10 DAYS).


...DAILY...

2 RECORD HIGH TEMPERATURES SET OR TIED (05/27 AND 05/14).

2 RECORD HIGH MINIMUM TEMPERATURES TIED (05/31 AND 05/12).

4 RECORD SNOWFALL VALUES SET OR TIED (04/19, 04/16, 04/15, AND
04/01).


GOSSELIN

$$



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