Climatological Report (Seasonal)
Issued by NWS
Issued by NWS
221
CXUS53 KIWX 021058
CLSSBN
CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
558 AM EST TUE DEC 02 2025
...................................
...THE SOUTH BEND CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2025 TO 11/30/2025...
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
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 99 09/01/1953
09/08/1933
09/07/1933
LOW -7 11/25/1950
HIGHEST 88 09/19 MM MM 92
LOWEST 19 11/10 MM MM 15
AVG. MAXIMUM 64.4 61.3 3.1 67.1
AVG. MINIMUM 43.9 42.3 1.6 46.4
MEAN 54.1 51.8 2.3
DAYS MAX >= 90 0 1.6 -1.6 3
DAYS MAX <= 32 2 2.4 -0.4 2
DAYS MIN <= 32 20 18.3 1.7 8
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 19.07 2008
MINIMUM 3.23 1956
TOTALS 7.31 9.99 -2.68 8.21
DAILY AVG. 0.08 0.11 -0.03 0.09
DAYS >= .01 27 33.7 -6.7 26
DAYS >= .10 16 19.4 -3.4 18
DAYS >= .50 6 6.2 -0.2 5
DAYS >= 1.00 1 2.2 -1.2 2
GREATEST
24 HR. TOTAL 1.89
SNOWFALL (INCHES)
RECORDS
TOTAL 30.6 1977
24 HR TOTAL 6.5 11/13/2022 TO 11/13/2022
10/18/2022 TO 10/18/2022
TOTALS 27.1 5.3 21.8 2.9
SINCE 7/1 27.1 5.3 21.8 2.9
SNOWDEPTH AVG. 0 0
DAYS >= TRACE 8 3.8 4.2 5
DAYS >= 1.0 4 1.7 2.3 1
GREATEST
SNOW DEPTH 8 11/10 1
24 HR TOTAL 9.0R 11/29 TO 11/29
DEGREE DAYS
HEATING TOTAL 1101 1287 -186 873
SINCE 7/1 1126 1309 -183 881
COOLING TOTAL 136 86 50 144
SINCE 1/1 986 723 263 958
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 7.3
HIGHEST WIND SPEED/DIRECTION 36/250 DATE 11/26
HIGHEST GUST SPEED/DIRECTION 47/270 DATE 11/26
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.34
NUMBER OF DAYS FAIR 54
NUMBER OF DAYS PC 20
NUMBER OF DAYS CLOUDY 17
AVERAGE RH (PERCENT) 71
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 7 RAIN 10
LIGHT RAIN 26 FREEZING RAIN 0
LT FREEZING RAIN 1 HAIL 0
HEAVY SNOW 3 SNOW 4
LIGHT SNOW 8 SLEET 0
FOG 48 FOG W/VIS <= 1/4 MILE 7
HAZE 10
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...A WARM AND DRY, BUT VERY SNOWY FALL...
FALL WAS BOOKENDED BY A MUCH COLDER THAN USUAL START AND END,
WITH MUCH OF THE MIDDLE BEING WARMER THAN NORMAL. A MAJORITY
OF THE FALL WAS WARMER AND DRIER THAN USUAL THANKS TO A
PERSISTENT SERIES OF UPPER LEVEL RIDGES THAT DOMINATED THROUGH
SEPTEMBER AND OCTOBER. HIGH TEMPERATURES IN THE 70S AND EVEN 80S
WERE OBSERVED AT TIMES THROUGH MID-OCTOBER. THERE WERE 22 DAYS THIS
FALL WITH A HIGH TEMPERATURE AT OR OVER 80 DEGREES. THE LATEST 80
DEGREE DAY CAME ON OCTOBER 6TH WITH A HIGH OF 84 DEGREES. OCTOBER
AND NOVEMBER WERE TRANSITIONAL MONTHS WITH SEVERAL LARGE TEMPERATURE
SWINGS. THE FIRST FREEZE OF THE SEASON OCCURRED ON OCTOBER 25TH,
WHICH WAS 10 DAYS LATER THAN NORMAL. NUMEROUS HARD FREEZES OCCURRED
IN NOVEMBER. WINTER HIT WITH A VENGEANCE RIGHT AT THE END OF
METEOROLOGICAL FALL AFTER THANKSGIVING. SEVERAL DAYS WITH HIGHS
BELOW FREEZING WAS NOT ENOUGH TO OFFSET THE WARMER THAN NORMAL
TEMPERATURES THAT HAD ALREADY OCCURRED. THE WARMEST TEMPERATURE
OBSERVED THIS FALL WAS 88 DEGREES ON SEPTEMBER 19TH; CONVERSELY, THE
COLDEST TEMPERATURE WAS 19 DEGREES ON NOVEMBER 10TH. OVERALL, THE
FALL FINISHED WITH AN AVERAGE TEMPERATURE OF 54.1" DEGREES, WHICH
WAS 2.3 DEGREES ABOVE NORMAL. THIS FALL TIES AS THE 36TH WARMEST
FALL ON RECORD AND THE 7TH ABOVE NORMAL FALL IN A ROW FOR SOUTH
BEND. IT IS WORTH NOTING THAT IN THE PAST 10 YEARS, EVERY FALL HAS
HAD ABOVE NORMAL TEMPERATURES EXCEPT FOR 2018.
WIDESPREAD, SOAKING RAINFALL WAS HARD TO COME BY THIS FALL.
THROUGHOUT THE FALL, THERE WERE NUMEROUS OCCASSIONS WHERE DRY
STRETCHES LASTED FOR A WEEK OR MORE. THE HIGHEST SINGLE DAY
PRECIPITATION AMOUNT WAS 1.10", WHICH FELL ON OCTOBER 19TH. OVERALL,
FALL HAD 7.31" OF PRECIPITATION, WHICH WAS 2.66" BELOW NORMAL AND
RANKS AS THE 31ST DRIEST FALL ON RECORD. THIS WAS THE DRIEST FALL
SINCE 6.41" FELL IN 2020. DUE TO THE LACK OF RAIN, DROUGHT DID
DEVELOP FOR PARTS OF ST JOSEPH COUNTY, IN. FROM LATE SEPTEMBER TO
LATE OCTOBER, ~25% OF THE COUNTY EXPERIENCED MODERATE DROUGHT (D1).
DROUGHT IN NORTHWEST INDIANA WAS NOWHERE NEAR AS SEVERE AS THE
DROUGHT THAT DEVELOPED (AND IS STILL ONGOING) IN THE FORT WAYNE AREA
AND ALONG/SOUTH OF THE US 24 CORRIDOR.
A MAJORITY OF THE PRECIPITATION THIS FALL FELL AS SNOW NOT RAIN.
THERE WAS NO SNOW IN SEPTEMBER OR OCTOBER, BUT SNOW ADDED UP VERY
QUICKLY IN NOVEMBER DUE TO AN ACTIVE NORTHWEST FLOW PATTERN. SOUTH
BEND HAD TWO DAYS IN NOVEMBER WITH DAILY SNOWFALL TOTALS OVER 8
INCHES! OVERALL, A TOTAL OF 27.1" OF SNOW FELL THIS FALL WHICH WAS
21.8" ABOVE NORMAL AND RANKS AS THE 3RD SNOWIEST ON RECORD. THIS WAS
THE SNOWIEST FALL SINCE 2022 WHEN 30.2" FELL.
A MONTH BY MONTH SUMMARY IS BELOW:
SEPTEMBER
...NEAR-RECORD COLD START GIVES WAY TO UNSEASONABLE WARMTH AND
DROUGHT...
A COLD FRONT AND SUBSEQUENT HIGH PRESSURE IN LATE AUGUST BROUGHT A
STRETCH OF BELOW NORMAL TEMPERATURES THAT SPILLED INTO SEPTEMBER. A
REINFORCING DOSE OF COLD AIR ARRIVED FOR SEPTEMBER 4TH, WHEN THE
OBSERVED DAILY AVERAGE TEMPERATURE OF 58 WAS 10 DEGREES BELOW
NORMAL. THE FIRST 10 DAYS OF THE MONTH WAS THE 4TH COLDEST ON RECORD
WITH AN AVERAGE TEMPERATURE OF 60.7 DEGREES. TWO RECORD LOWS WERE
TIED: 40 DEGREES ON THE 8TH (1986, 1951, 1932) AND 43 DEGREES ON THE
9TH (1914, 1951). BY MID-MONTH, STRONG UPPER-LEVEL RIDGING WAS
PROMINENT WHICH BROUGHT ANOMALOUS HEAT AND VERY LITTLE RAINFALL. IN
FACT, THE FINAL 20 DAYS OF THE MONTH RANKED AS THE 6TH WARMEST ON
RECORD WITH AN AVERAGE TEMPERATURE OF 69.4 DEGREES. RECORD LOW
TEMPERATURES WERE SET ON THE 8TH AND THE 9TH.
THE UNSEASONABLE WARMTH PAIRED WITH DRY CONDITIONS RESULTED IN A
RAPID DEGRADATION OF DROUGHT CONDITIONS THROUGH THE MONTH. ON
SEPTEMBER 2, THE US DROUGHT MONITOR INDICATED ABOUT 17% OF THE
NORTHERN INDIANA FORECAST AREA WAS EXPERIENCING MODERATE DROUGHT
(D1) OR WORSE. BY SEPTEMBER 23, THAT NUMBER WAS 71%. CREEK, POND,
AND STREAM LEVELS ARE EXPERIENCING VERY LOW FLOW. ADDITIONAL DROUGHT
IMPACTS INCLUDE TREES DROPPING LEAVES EARLY AND SOYBEANS ARE
STRESSED, FAILING TO FILL THEIR PODS IN SOME INSTANCES.
MEASURABLE RAINFALL OCCURRED ON ONLY SIX DAYS THIS MONTH, TOTALING
1.34 INCHES. THIS RANKS AS THE 18TH DRIEST ON RECORD, AND THE DRIEST
SINCE 0.48 INCHES IN 2009.
THE AVERAGE TEMPERATURE FOR THE MONTH WAS 66.5 DEGREES AND RANKS AS
THE 37TH WARMEST ON RECORD.
OCTOBER
...NEAR NORMAL RAINFALL; TOP 30 WARMEST OCTOBER...
WHILE IT IS NOT UNUSUAL FOR MONTHLY RAINFALL AMOUNTS TO VARY OVER A
RELATIVELY SHORT DISTANCE (100 MILES OR LESS), SOUTH BEND COULD NOT
HAVE HAD A MORE DIFFERENT OCTOBER THAN FORT WAYNE DID. WHILE FORT
WAYNE ONLY PICKED UP 0.77" OF RAIN THROUGHOUT THE MONTH, SOUTH BEND
GOT OVER 3 INCHES! DESPITE ONLY 8 DAYS OF MEASURABLE PRECIPTATION
THIS MONTH, SOUTH BEND`S PROXIMITY TO LAKE MICHIGAN REMARKABLY
PREVENTED A VERY DRY MONTH FROM OCCURING. THERE WERE SEVERAL DAYS
WHERE LAKE EFFECT RAIN SHOWERS MOVED THROUGH SOUTH BEND BUT DID NOT
MAKE IT MUCH FURTHER INLAND. SOUTH BEND, AND AREAS CLOSER TO LAKE
MICHIGAN, HAD A RELATIVELY NORMAL OCTOBER WHILE MORE INLAND AREAS
HAD A VERY DRY MONTH. MORE THAN HALF OF THE MONTH`S RAINFALL FELL ON
OCTOBER 18TH AND 19TH, WHEN WIDESPREAD RAINFALL MOVED THROUGH THE
AREA AND BROUGHT 0.80" AND 1.10" TO SOUTH BEND, RESPECTIVELY.
OVERALL, A TOTAL OF 3.27" OF RAIN FELL THIS MONTH, WHICH IS 0.45"
BELOW NORMAL. OCTOBER 2025 RANKS AS THE 57TH WETTEST OCTOBER ON
RECORD.
NO SNOW WAS RECORDED THIS MONTH. DESIPTE THE AVERAGE FIRST SNOWFALL
OCCURRING ON NOVEMBER 12TH, OCTOBER DOES TYPICALLY AVERAGE 0.2" OF
SNOW IN SOUTH BEND. THE LAST TIME MEASURABLE SNOW FELL IN SOUTH BEND
WAS ON OCTOBER 31ST, 2023 WHEN 1.4" FELL.
OCTOBER IS OFTEN A TRANSITION MONTH BETWEEN SUMMER AND FALL WITH
LARGE TEMPERATURES SWINGS AND THIS YEAR WAS NO EXCEPTION. OCTOBER
BEGAN WARMER THAN NORMAL WITH A PERISTENT UPPER LEVEL RIDGE PATTERN
ACROSS THE MIDWEST AND GREAT LAKES REGIONS. THE FIRST HALF OF THE
MONTH SAW NEAR RECORD HIGHS IN THE UPPER 80S WITH WARM OVERNIGHT
LOWS. A COOLER DAY OR TWO BRIEFLY OCCURRED BUT HEAT AND HUMIDITY
DOMINATED THE FIRST HALF OF OCTOBER. IN FACT, A NEW RECORD WARM LOW
WAS SET IN SOUTH BEND ON OCTOBER 18TH; THE LOW OF 61 DEGREES BROKE
THE OLD RECORD WARM LOW OF 59 DEGREES SET IN 2007. A SERIES OF
SEVERAL COLD FRONTS MOVED THROUGH DURING THE LATTER HALF OF THE
MONTH AS FALL FINALLY SETTLED IN BY THE END OF THE MONTH. COOLER AIR
WAS ABLE TO OVERCOME THE PERISTENT HEAT BY THE LAST THIRD OF THE
MONTH. BY THE END OF OCTOBER, HIGHS IN THE 50S AND 60S AND LOWS IN
THE 30S AND 40S - HAD BECOME COMMON. THE FIRST WIDESPREAD FREEZE OF
THE FALL OCCURRED ON OCTOBER 25TH WITH A LOW OF 29 DEGREES,
EFFECTIVELY ENDING THE GROWING SEASON. OVERALL, THE MONTHLY AVERAGE
TEMPERATURE WAS 55.9 DEGREES, WHICH IS 3.9 DEGREES ABOVE NORMAL.
OCTOBER 2025 RANKS AS THE 24TH WARMEST SINCE RECORDS BEGAN IN 1893.
NOVEMBER
...3RD SNOWIEST NOVEMBER ON RECORD...
AS IS COMMON IN THE FALL, NOVEMBER WAS AN ACTIVE TRANSITION MONTH
FROM WARMER THAN NORMAL TO COOLER THAN NORMAL TEMPERATURES. SEVERAL
SYSTEMS WITH STRONG COLD FRONTS MOVED THROUGH THE AREA, WHICH OFTEN
RESULTED IN SEVERAL DAYS OF WARM AIR OUT AHEAD OF THE INCOMING
SYSTEM FOLLOWED BY COOLER THAN NORMAL TEMPERATURES BEHIND IT. THE
WARMEST TEMPERATURE THIS MONTH WAS 66 DEGREES, WHICH OCCURRED ON
NOVEMBER 15TH. CONVERSELY, THE COLDEST TEMPERATURE THIS MONTH WAS 19
DEGREES, WHICH OCCURRED ON NOVEMBER 10TH. 15 DAYS THIS MONTH WERE
COOLER THAN NORMAL. DESPITE A SIGNIFICANT COLD SNAP AFTER
THANKSGIVING TO FINISH OUT THE MONTH, NOVEMBER FINISHED RIGHT AROUND
NORMAL. OVERALL, THE AVERAGE TEMPERATURE WAS 40.0 DEGREES AND WAS
0.2 DEGREES WARMER THAN NORMAL.
THIS YEAR HAS BEEN NOTABLY DRY FOR SOUTH BEND, ESPECIALLY THROUGHOUT
THE SUMMER AND FALL, AND THIS MONTH WAS NO EXCEPTION. 13 DAYS THIS
MONTH HAD MEASURABLE PRECIPITATION, WITH 2 DAYS HAVING OVER A HALF
INCH OF PRECIPITATION. 0.64" WAS MEASURED ON NOVEMBER 10TH AND 0.67"
WAS MEASURED ON NOVEMBER 29TH. THERE WERE SEVERAL ADDITIONAL DAYS
WITH TOTALS (EITHER RAIN OR MELTED SNOW EQUIVALENT) OF TOTALS AROUND
A QUARTER INCH. IN TOTAL THIS MONTH, SOUTH BEND RECORDED 2.70" OF
PRECIPITATION IN NOVEMBER, WHICH IS ONLY 0.08" BELOW NORMAL.
WHILE TEMPERATURES AND PRECIPITATION ARE UNREMARKABLE FOR NOVEMBER,
WHAT IS NOTABLE ABOUT NOVEMBER IS THE IMPRESSIVE AMOUNT OF SNOW THAT
FELL. TWO LARGE LOW PRESSURE SYSTEMS WERE RESPONSIBLE FOR THE 3RD
SNOWIEST NOVEMBER ON RECORD IN SOUTH BEND! AN AREA OF LOW PRESSURE
MOVING THROUGH THE GREAT LAKES BROUGHT LAKE EFFECT SNOW ON NOVEMBER
9-11TH WITH AN IMPRESSIVE 14.3 " OF SNOW TOTAL. ANOTHER LOW PRESSURE
SYSTEM CAME THROUGH AT THE END OF THE MONTH ON NOVEMBER 29-30TH,
TOTALLING A 2-DAY TOTAL OF 11.4" OF SYNOPTIC (SYSTEM) SNOWFALL.
BETWEEN THESE TWO SYSTEMS, THE TOTAL SNOWFALL THIS MONTH WAS 27.1"!
THIS RANKS AS THE 3RD SNOWIEST NOVEMBER ON RECORD, ONLY BEHIND 2022
(30.2") AND 1977 (30.3"). SNOWFALL THIS MONTH WAS 22.0" ABOVE NORMAL!
THERE WERE TWO NEW DAILY SNOWFALL RECORDS SET DURING THE MONTH OF
NOVEMBER. 8.2" OF SNOW FELL ON NOVEMBER 9TH, SURPASSING THE PREVIOUS
RECORD OF 8.0" SET IN 1913. 9.0" OF SNOW FELL ON NOVEMBER 29TH,
WHICH BROKE THE PREVIOUS RECORD OF 5.9" SET IN 1942.
JOHNSON/ROLLER/BROWN
$$