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

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CXUS53 KLSX 021903 CCA
CLMSTL

CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
847 AM CDT TUE MAY 1 2018

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

...THE ST. LOUIS MO CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

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

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              93   04/18/2002
                        04/26/1989
                        04/10/1930
 LOW               20   04/03/1936
HIGHEST            85   04/12                         88
LOWEST             24   04/07                         39
AVG. MAXIMUM     60.7              67.4    -6.7     72.7
AVG. MINIMUM     39.0              47.2    -8.2     51.9
MEAN             49.8              57.3    -7.5     62.3
DAYS MAX >= 90      0               0.3    -0.3        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32     10               1.1     8.9        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.84   1893
 MINIMUM         0.46   1895
TOTALS           2.28              3.69   -1.41    10.37
DAILY AVG.       0.08              0.12   -0.04     0.35
DAYS >= .01         9              11.3    -2.3       16
DAYS >= .10         5               7.3    -2.3        7
DAYS >= .50         1               2.5    -1.5        5
DAYS >= 1.00        0               0.7    -0.7        4
GREATEST
 24 HR. TOTAL    1.25   04/13 TO 04/14

SNOWFALL (INCHES)
RECORDS
 TOTAL            6.5   1971
 24 HR TOTAL      6.5   04/05/1971 TO 04/06/1971
TOTALS            0.6               0.4     0.2      0.0
SINCE 7/1         7.1              17.7   -10.6      3.2
GREATEST
 24 HR TOTAL      0.6   04/01 TO 04/01

DEGREE_DAYS
HEATING TOTAL     460               270     190      140
 SINCE 7/1       4605              4456     149     3340
COOLING TOTAL      13                39     -26       67
 SINCE 1/1         13                46     -33       75
..............................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    39/120    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    48/310    DATE  04/03

SKY COVER
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         14


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                7     SLEET                      1
FOG                      10     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

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

...MONTHLY...

4TH COLDEST APRIL ON RECORD (49.8 DEGREES).

TIED 3RD MOST OCCURRENCES WITH A MAXIMUM TEMPERATURE
LESS THAN 50 DEGREES (8 DAYS).

MOST OCCURRENCES OF A MINIMUM TEMPERATURE LESS THAN
OR EQUAL TO 32 DEGREES (10 DAYS. PREVIOUS RECORD 8 DAYS
SET IN 1982 AND 1881).

TIED 5TH LONGEST STRETCH OF DAYS WITH A MINIMUM
TEMPERATURE LESS THAN OR EQUAL TO 32 DEGREES (5 DAYS
ENDING 04/08).

16TH SNOWIEST APRIL ON RECORD (0.6 INCHES).

...DAILY...

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



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