Climatological Report (Seasonal)
Issued by NWS
Issued by NWS
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000 CXUS53 KIWX 031553 CLSSBN CLIMATE REPORT...CORRECTED NATIONAL WEATHER SERVICE NORTHERN INDIANA 1153 AM EDT FRI SEP 03 2021 ................................... ...THE SOUTH BEND CLIMATE SUMMARY FOR THE SEASON, FROM 6/1/2021 TO 8/31/2021... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1893 TO 2021 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 109 07/24/1934 LOW 35 06/11/1972 06/02/1956 06/16/1917 HIGHEST 95 08/24 81 14 94 LOWEST 46 06/22 61 -15 44 AVG. MAXIMUM 83.7 81.0 2.7 85.0 AVG. MINIMUM 64.3 60.2 4.1 62.6 MEAN 74.0 70.6 3.4 DAYS MAX >= 90 11 11.3 -0.3 21 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.0 0.0 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 19.30 2016 MINIMUM 5.62 1991 TOTALS 17.56 11.83 5.73 10.33 DAILY AVG. 0.19 0.13 0.06 0.11 DAYS >= .01 33 30.5 2.5 25 DAYS >= .10 19 20.4 -1.4 15 DAYS >= .50 12 8.1 3.9 9 DAYS >= 1.00 4 2.6 1.4 3 GREATEST 24 HR. TOTAL 4.63 SNOWFALL (INCHES) RECORDS TOTAL MM MM 24 HR TOTAL MM TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 0.0 0.0 0.0 MM SNOWDEPTH AVG. 0 0 DAYS >= TRACE 0 0.0 0.0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 0 24 HR TOTAL MM DEGREE DAYS HEATING TOTAL 10 64 -54 14 SINCE 7/1 0 14 -14 1 COOLING TOTAL 858 581 277 852 SINCE 1/1 952 637 315 913 .............................................................. WIND (MPH) AVERAGE WIND SPEED 6.8 HIGHEST WIND SPEED/DIRECTION 41/300 DATE 06/29 HIGHEST GUST SPEED/DIRECTION 55/280 DATE 06/29 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.29 NUMBER OF DAYS FAIR 62 NUMBER OF DAYS PC 23 NUMBER OF DAYS CLOUDY 7 AVERAGE RH (PERCENT) 69 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 28 MIXED PRECIP 0 HEAVY RAIN 18 RAIN 16 LIGHT RAIN 40 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 41 FOG W/VIS <= 1/4 MILE 6 HAZE 13 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && FOR THE SUMMER SEASON, SOUTH BEND AVERAGED 74.0 TEMPERATURE-WISE, WHICH WAS 3.4 ABOVE ITS NORMAL SUMMER-TIME AVERAGE TEMPERATURE OF 70.6. THIS RANKS AS THE 9TH WARMEST SUMMER WHEN COMPARED TO THE PERIOD OF RECORD. IT ALSO TOTALLED 17.56 INCHES OF RAINFALL, WHICH IS 5.73 INCHES ABOVE NORMAL. THIS RANKS AS THE 2ND WETTEST SUMMER WHEN COMPARED TO THE PERIOD OF RECORD. SEE THE MONTH BY MONTH SUMMARY BELOW. JUNE 2021 ON JUNE 1, THE TOTAL PRECIPITATION FOR THE YEAR WAS 4.17 INCHES BELOW NORMAL. ACCORDING TO THE U.S. DROUGHT MONITOR, EXTREME NORTHERN INDIANA WAS DECLARED "ABNORMALLY DRY", WHILE SOUTHERN MICHIGAN WAS IN A "MODERATE DROUGHT". BY THE END OF THIS MONTH, THE YEAR`S PRECIPITATION TOTAL WAS 1.59 INCHES ABOVE NORMAL. THIS CHANGE IS LARGELY THE RESULT OF A STATIONARY FRONT THAT MOVED IN LATE IN THE MONTH WHICH BECAME THE FOCUS FOR NUMEROUS ROUNDS OF RAIN AND THUNDERSTORMS. FOUR TO SEVEN INCHES OF RAIN FELL IN THE GREATER SOUTH BEND AREA FROM THE 25TH AND 26TH. THE SOUTH BEND AIRPORT RECEIVED AN IMPRESSIVE 1.84 INCHES (25TH), FOLLOWED BY AN INCREDIBLE 4.30 INCHES THE NEXT DAY! OF COURSE, THAT SHATTERED THE OLD RECORD OF 1.87 INCHES IN 1994. THE GREATEST SINGLE-DAY PRECIPITATION TOTAL FOR JUNE IS 4.69 INCHES WHICH OCCURRED ON JUNE 25, 1968. THE RAIN TOTAL FOR THE MONTH WAS 9.67 INCHES WHICH IS 5.63 INCHES ABOVE NORMAL. THIS RANKS AS THE 2ND WETTEST JUNE ON RECORD. TEMPERATURES WERE GENERALLY ABOVE NORMAL FOR THE MONTH WITH THE EXCEPTION OF A COOL SPELL FROM THE 21ST TO 23RD. THE MORNING LOW OF 46 ON THE 22ND WAS 14 DEGREES BELOW NORMAL AND SEVEN DEGREES AWAY FROM THE RECORD LOW. ON THE OTHER HAND, SOUTH BEND RECORDED ITS FIRST THREE 90-DEGREE DAYS (6/5, 11, 12). THE AVERAGE FIRST 90- DEGREE DAY IS JUNE 11TH. BY THE END OF JUNE LAST YEAR, SOUTH BEND HAD ALREADY OBSERVED FIVE 90-DEGREE DAYS. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 73.0 DEGREES WHICH IS 4.2 DEGREES ABOVE NORMAL. THIS RANKS AS THE 8TH WARMEST JUNE ON RECORD. JULY 2021 ...SLIGHTLY COOL AND DRY, BUT HUMID... THIS MONTH`S AVERAGE TEMPERATURE FINISHED AT 73.4 DEGREES, WHICH IS 0.1 DEGREE ABOVE NORMAL AND RANKED AS THE 53RD WARMEST JULY ALL TIME. SOUTH BEND HAD 3 DAYS REACHING 90 DEGREES OR HIGHER, WHICH IS THE LOWEST TOTAL SINCE 2017 WHEN IT HAD 0 90+ DEGREE DAYS AND IS 3.3 DAYS BELOW THE NORMAL NUMBER OF 90+ DEGREE DAYS (6.3). IT ALSO HAD 16 DAYS ONLY FALLING TO 65 DEGREES OR GREATER AS A LOW TEMPERATURE, WHICH IS 4.4 DAYS ABOVE THE NORMAL TOTAL OF 12.4 DAYS DURING THE MONTH OF JULY. THIS IS AS A RESULT OF THE HIGH RESIDENCE TIME OF HIGH HUMIDITY IN THE AREA. PUTTING THAT ALL TOGETHER, THE COOLER HIGH TEMPERATURES, BUT HIGHER HUMIDITY ALLOWS THE MONTH TO FINISH OFF AROUND NORMAL IN THE AVERAGE TEMPERATURE CATEGORY. THIS MONTH`S PRECIPITATION TOTALED 2.39, WHICH IS 1.39 INCH BELOW THE NORMAL JULY TOTAL OF 3.78. THIS RANKED AS THE 42ND DRIEST JULY ALL TIME. SOUTH BEND HAD A WET MIDDLE PART OF THE MONTH WHEN IT SAW 8 STRAIGHT DAYS OF RAINFALL (ABOVE 0 INCHES) FROM THE 10TH TO THE 17TH. 8 OR MORE STRAIGHT DAYS OF RAINFALL HAS ONLY HAPPENED 5 OTHER TIMES IN SOUTH BEND`S PERIOD OF RECORD (2003,1992,1990,1915,1905). HOWEVER, THE HIGHEST AMOUNT OF RAINFALL THAT FELL ON A SINGLE DAY IN JULY STAYED BELOW 0.75 INCHES HELPING TO KEEP THE TOTAL RAINFALL FOR THE MONTH BELOW NORMAL AND REFLECTED THE SUMMER TIME HIT-OR-MISS NATURE OF STORMS, WHICH WERE COMMON THIS MONTH. AUGUST 2021 ...HOT AND WET... THIS MONTH`S AVERAGE TEMPERATURE FINISHED AT 75.6 DEGREES, WHICH IS 4.9 DEGREE(S) ABOVE NORMAL AND RANKED AS THE XX WARMEST AUGUST WHEN COMPARED TO THE PERIOD OF RECORD. SOUTH BEND HAD 5 DAYS REACHING 90 DEGREES OR HIGHER, WHICH IS 1 DAY HIGHER THAN THE AVERAGE OF 4.2 DAYS 90 DEGREE DAYS DURING THE MONTH OF AUGUST. IT ALSO HAD 18 DAYS ONLY FALLING TO 65 DEGREES OR GREATER AS A LOW TEMPERATURE, WHICH IS 8.2 DAYS ABOVE THE NORMAL TOTAL OF 9.8 DAYS DURING THE MONTH OF AUGUST. THIS IS AS A RESULT OF THE HIGH RESIDENCE TIME OF HIGH HUMIDITY IN THE AREA. PUTTING THAT ALL TOGETHER, THE WARMER HIGH TEMPERATURES, AND HIGHER HUMIDITY ALLOWS THE MONTH TO FINISH OFF ABOVE NORMAL IN THE AVERAGE TEMPERATURE CATEGORY. SOUTH BEND HAD 3 SEVERE WEATHER-AIDED RAINFALL TOTALS EXCEEDING 0.5 INCH ON THE 6TH (1.16), 10TH (2.55), AND 11TH (0.65) AND ANOTHER RAINFALL EVENT TOTALLING 0.86 INCH ON THE 24TH. THESE RAINFALL TOTALS HELPED SOUTH BEND REACH 5.50 INCHES OF PRECIPITATION FOR THE MONTH, WHICH IS 1.49 ABOVE THE NORMAL AUGUST TOTAL OF 4.01 INCHES. THIS RANKED AS THE 19TH WETTEST AUGUST WHEN COMPARED TO THE PERIOD OF RECORD. $$ ROLLER/BROWN