Climatological Report (Monthly)
Issued by NWS
Issued by NWS
709
CXUS53 KIWX 011537
CLMSBN
CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
851 AM EDT TUE OCT 01 2024
...................................
...THE SOUTH BEND CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1893 TO 2024
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 99 09/01/1953
09/08/1933
09/07/1933
LOW 29 09/28/1942
HIGHEST 92 09/21 MM MM 93 09/05
LOWEST 43 09/08 MM MM 46 09/14
AVG. MAXIMUM 80.1 74.4 5.7 76.5
AVG. MINIMUM 56.1 53.0 3.1 56.7
MEAN 68.1 63.7 4.4
DAYS MAX >= 90 3 1.5 1.5 3
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 13.92 2008
MINIMUM 0.01 1979
TOTALS 3.47 3.49 -0.02 1.71
DAILY AVG. 0.12 0.12 0.00 0.06
DAYS >= .01 6 9.6 -3.6 7
DAYS >= .10 4 5.9 -1.9 4
DAYS >= .50 2 2.2 -0.2 2
DAYS >= 1.00 2 0.8 1.2 0
GREATEST
24 HR. TOTAL 1.84 09/23 TO 09/24
SNOWFALL (INCHES)
RECORDS
TOTAL 1.2 1942
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL MM
DEGREE DAYS
HEATING TOTAL 27 116 -89 46
SINCE 7/1 35 137 -102 MM
COOLING TOTAL 125 77 48 102
SINCE 1/1 939 714 225 MM
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WIND (MPH)
AVERAGE WIND SPEED 6.2
HIGHEST WIND SPEED/DIRECTION 25/360 DATE 09/07
HIGHEST GUST SPEED/DIRECTION 36/030 DATE 09/27
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.27
NUMBER OF DAYS FAIR 20
NUMBER OF DAYS PC 6
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 67
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 4
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 9 FOG W/VIS <= 1/4 MILE 4
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
THE NEED FOR RAIN WAS STARTING TO BECOME DIRE AS ON SEPTEMBER 19TH,
IT HAS BEEN 22 DAYS SINCE SOUTH BEND HAD MEASURABLE RAINFALL. THIS
WAS THE 13TH LONGEST STRETCH (TIED WITH 1999 AND OTHERS) WITHOUT
RAIN ON RECORD. LAWNS WENT DORMANT, CREEKS, STREAMS, AND PONDS WERE
VERY LOW, CROPS DRIED DOWN QUICKLY, AND SOME FIELD FIRES WERE
REPORTED. DROUGHT CONDITIONS, AS REPORTED BY THE US DROUGHT MONITOR,
WORSENED RAPIDLY DURING THIS TIME. AT THE END OF AUGUST, ONLY 13% OF
THE FORECAST AREA WAS DEEMED TO BE EXPERIENCING "MODERATE DROUGHT"
CONDITIONS. BY SEPTEMBER 17TH, THE NUMBER BALLOONED TO NEARLY 71% OF
THE AREA. A PORTION OF NORTHWEST OHIO AND NORTHEAST INDIANA WAS
WORSE OFF, WITH "SEVERE DROUGHT". MUCH NEEDED RAIN SOON FOLLOWED.
THE STAGNANT UPPER-LEVEL RIDGE WHICH WAS PARKED OVER THE EASTERN
GREAT LAKES WAS FINALLY DISPLACED AND 0.09" OF RAIN WAS MEASURED ON
THE 20TH. THE DAYS THAT FOLLOWED WERE VERY ACTIVE WITH NOT ONLY
RAIN, BUT HAZARDOUS WEATHER IN THE FORM OF MICROBURSTS AND TORNADOES
AS WELL. 3.17 INCHES OF RAIN FELL FROM THE 22ND THROUGH 25TH. A NEW
DAILY RAINFALL RECORD WAS SET ON THE 24TH AS 1.79 INCHES BROKE THE
RECORD OF 1.77 INCHES IN 1945. TO FINISH OFF THE MONTH, THE REMNANTS
OF HURRICANE HELENE ARRIVED OVER THE MIDWEST BRINGING ADDITIONAL
DROUGHT RELIEF.
DURING THAT STRETCH OF DRY WEATHER, HIGH TEMPERATURES IN THE 80S AND
EVEN 90 WERE COMMON. SOUTH BEND RECORDED THREE 90-DEGREE DAYS (SAME
AS 2023 AND 2021) AND AN IMPRESSIVE 15 DAYS WITH A HIGH OF 80
DEGREES OR WARMER (TIES 2022 AND 2021). THESE UNSEASONABLY WARM
TEMPERATURES WERE IN CONTRAST TO SEPTEMBER 7TH AND 8TH WHEN THE
AVERAGE TEMPERATURE DEPARTURE WAS 10 TO 11 DEGREES BELOW NORMAL
(HIGHS IN THE 60S AND LOWS IN THE 40S). DESPITE THESE UNSEASONABLE
TEMPERATURES, NO RECORDS WERE SET.
THE AVERAGE TEMPERATURE FOR THE MONTH WAS 68.1 DEGREES. THIS IS 4.4
DEGREES ABOVE NORMAL AND RANKS AS THE 15TH WARMEST ON RECORD.
PRECIPITATION TOTALED 3.42 INCHES WHICH IS 0.02 INCHES BELOW NORMAL.
BROWN/FISHER
$$