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

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CXUS53 KLSX 011436
CLMCOU


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

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

...THE COLUMBIA MO CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1890 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              93   04/10/1930
 LOW               14   04/05/1920
HIGHEST            87   04/12                         86
LOWEST             21   04/07                         35
AVG. MAXIMUM     60.8              66.1    -5.3     70.5
AVG. MINIMUM     38.3              44.0    -5.7     49.0
MEAN             49.6              55.0    -5.4     59.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32     13               2.7    10.3        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.69   1994
 MINIMUM         0.61   1948
TOTALS           0.45R             4.49   -4.04     8.76
DAILY AVG.       0.01              0.15   -0.14     0.29
DAYS >= .01         5              10.8    -5.8       11
DAYS >= .10         2               7.2    -5.2        8
DAYS >= .50         0               3.1    -3.1        4
DAYS >= 1.00        0               1.1    -1.1        2
GREATEST
 24 HR. TOTAL    0.22   04/13 TO 04/13              4.89

SNOWFALL (INCHES)
RECORDS
 TOTAL            7.1   1980
 24 HR TOTAL      7.1   04/14/1980 TO 04/15/1980
TOTALS            0.6               0.2     0.4      0.0
SINCE 7/1         4.1              18.0   -13.9      1.6
GREATEST
 24 HR TOTAL      0.3   04/08 TO 04/08

DEGREE_DAYS
HEATING TOTAL     469               321     148      190
 SINCE 7/1       4769              4903    -134     3730
COOLING TOTAL      13                22      -9       38
 SINCE 1/1         13                25     -12       46
..............................................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    32/270    DATE  04/18
HIGHEST GUST SPEED/DIRECTION    48/280    DATE  04/18

SKY COVER
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          7


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                5     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      2
HAZE                      2

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

...MONTHLY...

8TH COLDEST APRIL ON RECORD (49.6 DEGREES).

TIED 3RD MOST OCCURRENCES WITH A MAXIMUM TEMPERATURE
LESS THAN 40 DEGREES (2 DAYS).

MOST OCCURRENCES OF A MINIMUM TEMPERATURE LESS THAN OR
EQUAL TO 32 DEGREES (13 DAYS. PREVIOUS RECORD 9 DAYS SET
IN 1982 AND 1907).

LONGEST STRETCH OF DAYS WITH A MINIMUM TEMPERATURE
LESS THAN OR EQUAL TO 32 DEGREES (9 DAYS ENDING 04/09).

DRIEST APRIL ON RECORD (0.45 INCHES. PREVIOUS RECORD
0.61 INCHES IN 1948).

TIED LEAST NUMBER OF OCCURRENCES WITH AT LEAST A TENTH
OF AN INCH OF PRECIPITATION (2 DAYS. TIED WITH 1987 AND 1948).

...DAILY...

1 RECORD LOW TEMPERATURE TIED (23 DEGREES ON 04/02. ALSO
SET IN 1992).

2 RECORD LOW MAXIMUM TEMPERATURES SET OR TIED (04/15 AND
04/01).

1 RECORD SNOWFALL VALUE TIED (TRACE ON 04/16. ALSO SET IN 1999).

$$




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