Climatological Report (Monthly)
Issued by NWS Missoula, MT

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894
CXUS55 KMSO 022142
CLMBTM

CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
342 PM MDT THU OCT 02 2025

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

...THE BUTTE MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1895 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             96   09/03/2022
 LOW               3   09/24/1926
HIGHEST           88   09/03         MM      MM       89
LOWEST            29   09/23         MM      MM       26
AVG. MAXIMUM    74.2               69.1     5.1     74.6
AVG. MINIMUM    39.2               36.5     2.7     39.4
MEAN            56.7               52.8     3.9     57.0
DAYS MAX >= 90     0                0.3    -0.3        0
DAYS MAX <= 32     0                0.1    -0.1        0
DAYS MIN <= 32     2                8.7    -6.7        3
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.54   1947
 MINIMUM        0.00   1904
TOTALS          0.59               1.07   -0.48     0.80
DAILY AVG.      0.02               0.04   -0.02     0.03
DAYS >= .01        8                6.9     1.1        6
DAYS >= .10        3                3.1    -0.1        3
DAYS >= .50        0                0.6    -0.6        0
DAYS >= 1.00       0                0.0     0.0        0
GREATEST
 24 HR. TOTAL   0.14   09/09 TO 09/10               0.35


DEGREE DAYS
HEATING TOTAL    242                368    -126
 SINCE 7/1       393                583    -190
COOLING TOTAL      3                  2       1
 SINCE 1/1        60                 83     -23
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              4.5
HIGHEST WIND SPEED/DIRECTION    29/250    DATE  09/14
HIGHEST GUST SPEED/DIRECTION    45/250    DATE  09/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.18
NUMBER OF DAYS FAIR           25
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     54

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       4
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      1
HAZE                      2

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

$$