845 CDUS43 KLSX 210732 CLISTL CLIMATE REPORT NATIONAL WEATHER SERVICE ST LOUIS MO 231 AM CDT THU SEP 21 2017 ................................... ...THE ST. LOUIS CLIMATE SUMMARY FOR SEPTEMBER 20 2017... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1874 TO 2017 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 97R 254 PM 96 1940 78 19 93 MINIMUM 73 612 AM 40 1875 59 14 72 AVERAGE 85 69 16 83 PRECIPITATION (IN) YESTERDAY 0.00 1.40 1876 0.11 -0.11 0.00 MONTH TO DATE 0.27 2.06 -1.79 4.68 SINCE SEP 1 0.27 2.06 -1.79 4.68 SINCE JAN 1 30.57 29.81 0.76 33.16 SNOWFALL (IN) YESTERDAY 0.0 0.0 2015 0.0 0.0 0.0 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE SEP 1 0.0 0.0 0.0 0.0 SINCE JUL 1 0.0 0.0 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 2 -2 0 MONTH TO DATE 6 11 -5 0 SINCE SEP 1 6 11 -5 0 SINCE JUL 1 6 12 -6 0 COOLING YESTERDAY 20 5 15 18 MONTH TO DATE 153 164 -11 240 SINCE SEP 1 153 164 -11 240 SINCE JAN 1 1755 1563 192 1945 .................................................................. WIND (MPH) HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (170) AVERAGE WIND SPEED 9.5 SKY COVER AVERAGE SKY COVER 0.2 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 87 400 AM LOWEST 40 300 PM AVERAGE 64 .......................................................... THE ST. LOUIS CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 78 97 1881 MINIMUM TEMPERATURE (F) 58 40 1983 SUNRISE AND SUNSET SEPTEMBER 21 2017.....SUNRISE 649 AM CDT SUNSET 700 PM CDT SEPTEMBER 22 2017.....SUNRISE 649 AM CDT SUNSET 658 PM CDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$