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