Climatological Report (Annual)
Issued by NWS St Louis, MO
Issued by NWS St Louis, MO
283 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). $$