078
CXUS53 KIWX 011342
CLMSBN
CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
942 AM EDT SUN JUN 01 2025
...............................
..THE SOUTH BEND CLIMATE SUMMARY FOR THE MONTH OF MAY 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1893 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 97 05/27/2012
LOW 24 05/06/1968
HIGHEST 89 05/15 MM MM 88 05/20
05/21
LOWEST 35 05/09 MM MM 43 05/12
AVG. MAXIMUM 69.0 70.1 -1.1 76.2
AVG. MINIMUM 47.2 48.1 -0.9 51.9
MEAN 58.1 59.1 -1.0
DAYS MAX >= 90 0 0.7 -0.7 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.6 -0.6 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.33 2018
MINIMUM 0.80 1994
TOTALS 2.08 4.20 -2.12 3.49
DAILY AVG. 0.07 0.14 -0.07 0.11
DAYS >= .01 10 13.4 -3.4 16
DAYS >= .10 4 8.0 -4.0 7
DAYS >= .50 2 3.1 -1.1 2
DAYS >= 1.00 0 0.9 -0.9 0
GREATEST
24 HR. TOTAL 0.53 05/04 TO 05/04
SNOWFALL (INCHES)
RECORDS
TOTAL 10.0 1929
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 38.1 64.5 -26.4 30.3
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL 0.0
DEGREE DAYS
HEATING TOTAL 235 231 4 73
SINCE 7/1 5583 6358 -775 4931
COOLING TOTAL 30 48 -18 51
SINCE 1/1 35 56 -21 64
............................................................
WIND (MPH)
AVERAGE WIND SPEED 8.9
HIGHEST WIND SPEED/DIRECTION 37/210 DATE 05/16
HIGHEST GUST SPEED/DIRECTION 56/200 DATE 05/16
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.45
NUMBER OF DAYS FAIR 14
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 8
AVERAGE RH (PERCENT) 65
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 6
LIGHT RAIN 14 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 13 FOG W/VIS <= 1/4 MILE 0
HAZE 7
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
..NEAR NORMAL TEMPERATURES WITH A LACK OF RAINFALL
THE MOST NOTABLE FEATURE THIS MONTH WAS THE WIDESPREAD STRONG 40 TO
70 MPH WINDS THAT MOVED THROUGH ON THE 16TH. A 55 MPH GUST WAS
RECORDED AT THE SOUTH BEND INTERNATIONAL AIRPORT. ADDITIONALLY, A
PLUME OF DUST FROM CROP FIELDS WAS KICKED UP AND IT REDUCED
VISIBILITY AT KSBN TO 1/4 MI AT 8:20 PM ET AS IT WENT NORTHWARD.
REDUCED VISIBILITY WAS MOST COMMON IN AREAS WEST OF US-31. 70 DEGREE
DEW POINTS ON THE 15TH WERE REPLACED BY A DRIER AREA OF 40 AND 50
DEGREE DEW POINTS ON THE 16TH AND THIS DRIER AIRMASS HELPED FACTOR
INTO THE STRONG WIND GUSTS OBSERVED AS A PLAINS-LIKE INVERTED-V
PROFILE SETUP OCCURRED. ONLY 0.04 INCH AND 0.02 INCH OF RAINFALL
WERE OBSERVED ON THE 15TH AND 16TH RESPECTIVELY.
AS FOR TEMPERATURE, THIS MONTH FINISHED JUST SLIGHTLY BELOW NORMAL.
TEMPERATURES THROUGHOUT THE FIRST HALF OF THE MONTH AVERAGED NORMAL
TO ABOVE NORMAL, WHEREAS THE LATTER HALF OF THE MONTH (THE 18TH
THROUGH 31ST) WAS MUCH COOLER AND THIS REALLY HELPED TO AVERAGE
THINGS OUT. OVERALL, THE AVERAGE TEMPERATURE WAS 58.1 DEGREES, WHICH
IS 1.0 DEGREE BELOW NORMAL. THIS MONTH RANKED AS THE 52ND COOLEST
MAY ON RECORD. RECORDS BEGAN IN 1893.
PRECIPITATION-WISE, THIS MONTH FINISHED WELL BELOW NORMAL. ONLY 2
DAYS THIS MONTH HAD RAIN TOTALS AT OR GREATER THAN A HALF INCH; THE
WETTEST DAY THIS MONTH WAS MAY 20TH WITH A TOTAL OF 0.53" OF
PRECIPITATION. IN TOTAL, 2.08" OF PRECIPITATION FELL THIS MONTH,
WHICH IS 2.12" BELOW NORMAL. THIS TIES FOR THE 28TH DRIEST MAY ON
RECORD.
ROLLER/JOHNSON
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