947
CXUS53 KFSD 012243
CLMFSD

CLIMATE REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
543 PM CDT WED OCT 01 2025

...................................

...THE SIOUX FALLS CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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            104   09/06/1976
                       09/06/1922
                       09/06/1913
 LOW              13   09/29/1899
HIGHEST           92   09/16         MM      MM       91  09/28
                       09/29
LOWEST            35   09/07         MM      MM       42  09/23
AVG. MAXIMUM    80.0               75.6     4.4     82.2
AVG. MINIMUM    53.8               51.9     1.9     55.3
MEAN            66.9               63.8     3.1     68.7
DAYS MAX >= 90     3                1.3     1.7        2
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.8    -0.8        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.26   1986
 MINIMUM        0.04   2024
TOTALS          0.22               2.73   -2.51     0.04
DAILY AVG.      0.01               0.09   -0.08     0.00
DAYS >= .01        6                8.1    -2.1        3
DAYS >= .10        0                4.6    -4.6        0
DAYS >= .50        0                1.7    -1.7        0
DAYS >= 1.00       0                0.6    -0.6        0
GREATEST
 24 HR. TOTAL   0.08   09/22 TO 09/22

DEGREE DAYS
HEATING TOTAL     54                126     -72       27
 SINCE 7/1        76                143     -67       32
COOLING TOTAL    120                 89      31      147
 SINCE 1/1       878                839      39      823
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.8
HIGHEST WIND SPEED/DIRECTION    37/330    DATE  09/04
HIGHEST GUST SPEED/DIRECTION    50/320    DATE  09/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.48
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$