Climatological Report (Monthly)
Issued by NWS
Issued by NWS
356
CXUS53 KIWX 011010
CLMSBN
CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
510 AM EST WED JAN 01 2025
...................................
...THE SOUTH BEND CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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 70 12/05/2001
12/02/1982
LOW -18 12/28/1924
HIGHEST 55 12/08 MM MM 59 12/09
12/25
LOWEST 8 12/12 MM MM 20 12/13
AVG. MAXIMUM 38.7 36.3 2.4 44.7
AVG. MINIMUM 27.0 23.0 4.0 33.9
MEAN 32.9 29.6 3.3
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 9 10.2 -1.2 1
DAYS MIN <= 32 21 25.2 -4.2 13
DAYS MIN <= 0 0 0.9 -0.9 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 5.50 1965
MINIMUM 0.60 1943
TOTALS 2.81 2.40 0.41 2.77
DAILY AVG. 0.09 0.08 0.01 0.09
DAYS >= .01 16 14.8 1.2 17
DAYS >= .10 8 6.0 2.0 9
DAYS >= .50 1 1.2 -0.2 1
DAYS >= 1.00 1 0.3 0.7 0
GREATEST
24 HR. TOTAL 1.48 12/29 TO 12/29
SNOWFALL (INCHES)
RECORDS
TOTAL 44.6 2000
TOTALS 8.0 13.7 -5.7 1.4
SINCE 7/1 10.9 19.0 -8.1 4.9
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 2 4.5 -2.5 1
GREATEST
SNOW DEPTH 4 12/07
24 HR TOTAL 6.1 12/05 TO 12/05
DEGREE DAYS
HEATING TOTAL 986 1096 -110 789
SINCE 7/1 1867 2404 -537 1886
COOLING TOTAL 0 0 0 0
SINCE 1/1 958 723 235 820
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WIND (MPH)
AVERAGE WIND SPEED 10.2
HIGHEST WIND SPEED/DIRECTION 41/260 DATE 12/04
HIGHEST GUST SPEED/DIRECTION 58/250 DATE 12/04
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.76
NUMBER OF DAYS FAIR 2
NUMBER OF DAYS PC 10
NUMBER OF DAYS CLOUDY 19
AVERAGE RH (PERCENT) 75
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 2
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 2 HAIL 0
HEAVY SNOW 1 SNOW 2
LIGHT SNOW 11 SLEET 0
FOG 19 FOG W/VIS <= 1/4 MILE 0
HAZE 14
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...COLDEST START TO DECEMBER IN 14 YEARS GIVES WAY TO MILD MONTH
OVERALL...
WINTER ARRIVED QUICKLY IN THE FORM OF COLDER-THAN-NORMAL
TEMPERATURES TO START THE MONTH. THROUGH DECEMBER 7, THE AVERAGE
TEMPERATURE FOR THE MONTH WAS 6.8 DEGREES BELOW NORMAL (26.2 DEGREES
OBSERVED), GOOD FOR THE COLDEST START TO METEOROLOGICAL WINTER SINCE
25.4 DEGREES IN 2010. THE LAKE MICHIGAN WATER TEMPERATURE WAS RIGHT
NEAR 40F AND SO LAKE EFFECT SNOW CAME BLASTING IN AS WELL WITH 6.1
INCHES OF SNOW MEASURED ON THE 5TH. THIS BEAT THE PREVIOUS DECEMBER
5TH RECORD OF 5.7 INCHES IN 1985. BY MONTH`S END, 8 INCHES OF SNOW
WAS RECORDED WHICH IS 5.7 INCHES BELOW NORMAL AND RANKS AS THE 38TH
LEAST AMOUNT ON RECORD.
THE AFORMENTIONED COLD WAS NEARLY ERASED IN THE DAYS THAT FOLLOWED
AS HIGH TEMPERATURES SOARED INTO THE MID-40S AND EVEN MID-50S. ON
THE 9TH, THE DAILY AVERAGE TEMPERATURE OF 48 DEGREES WAS A WHOPPING
17 DEGREES ABOVE NORMAL. FIVE DAYS THIS MONTH REACHED A HIGH OF 50
DEGREES OR WARMER WHICH IS TWO LESS THAN DECEMBER 2023. ONE MORE
BRIEF COLD SNAP OCCURRED FROM THE 11TH THROUGH 13TH BEFORE A RETURN
TO VERY MILD TEMPERATURES. THE AVERAGE TEMPERATURE FOR THE MONTH WAS
32.9 DEGREES WHICH IS 3.3 DEGREES ABOVE NORMAL AND TIES AS THE 26TH
WARMEST ON RECORD (1974 AND 1940).
PRECIPITATION WAS FREQUENT THANKS TO A PROGRESSIVE JET STREAM AND
MILD LAKE MICHIGAN WATER TEMPERATURES. THE US DROUGHT MONITOR WAS
GENERALLY UNCHANGED IN OUR AREA THROUGH DECEMBER WITH ABOUT 34
PERCENT OF THE AREA EXPERIENCING "SEVERE DROUGHT" (LEVEL 2 OF 4),
WHILE ALL OF THE AREA WAS DEEMED AT LEAST UNDER A "MODERATE DROUGHT"
(LEVEL 1 OF 4). THE MONTH RECORDED 2.81 INCHES OF PRECIPITATION
WHICH IS 0.41 INCHES ABOVE NORMAL AND IS 51ST WETTEST ON RECORD.
BROWN
$$