314
CXUS53 KGRR 020840
CLMLAN

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MICHIGAN
440 AM EDT THU OCT 02 2025

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

...THE LANSING CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1864 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             99   09/02/1894
 LOW              19   09/21/1863
HIGHEST           86   09/18         88      -2       87  09/21
LOWEST            38   09/08         33       5       42  09/08
AVG. MAXIMUM    77.0               73.6     3.4     77.8
AVG. MINIMUM    52.3               51.5     0.8     54.2
MEAN            64.6               62.5     2.1     66.0
DAYS MAX >= 90     0                0.6    -0.6        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.5    -0.5        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.34   1986
 MINIMUM        0.00   1979
TOTALS          1.73               2.81   -1.08     0.65
DAILY AVG.      0.06               0.09   -0.03     0.02
DAYS >= .01        3               10.1    -7.1        5
DAYS >= .10        3                5.3    -2.3        1
DAYS >= .50        1                1.6    -0.6        0
DAYS >= 1.00       1                0.6     0.4        0
GREATEST
 24 HR. TOTAL   1.05   09/03 TO 09/03

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   1994
 SNOW DEPTH        T   MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE      0                0.0     0.0        0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM

DEGREE DAYS
HEATING TOTAL     56                140     -84       49
 SINCE 7/1        91                170     -79       MM
COOLING TOTAL     53                 66     -13       86
 SINCE 1/1       771                649     122       MM

FREEZE DATES
RECORD
 EARLIEST     08/03/1894
 LATEST       07/15/1863
EARLIEST                        MM
LATEST                          05/09
................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.5
RESULTANT WIND SPEED/DIRECTION   1/220
HIGHEST WIND SPEED/DIRECTION    31/260    DATE  09/05
HIGHEST GUST SPEED/DIRECTION    44/260    DATE  09/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.23
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       3
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      17     FOG W/VIS <= 1/4 MILE      2
HAZE                      1

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

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