428
CXUS55 KMSO 012228
CLMBTM

CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
428 PM MDT THU OCT 01 2026

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

...THE BUTTE MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1895 TO 2026

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           80   09/25         MM      MM       88
LOWEST            27   09/15         MM      MM       29
                       09/27
AVG. MAXIMUM    69.1               69.1    -0.0     74.2
AVG. MINIMUM    38.9               36.5     2.4     39.2
MEAN            54.0               52.8     1.2     56.7
DAYS MAX >= 90     0                0.3    -0.3        0
DAYS MAX <= 32     0                0.1    -0.1        0
DAYS MIN <= 32     5                8.7    -3.7        2
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.54   1947
 MINIMUM        0.00   1904
TOTALS          0.94               1.07   -0.13     0.59
DAILY AVG.      0.03               0.04   -0.01     0.02
DAYS >= .01        7                6.9     0.1        8
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   0.43   09/18 TO 09/19               0.14


DEGREE DAYS
HEATING TOTAL    324                368     -44
 SINCE 7/1       422                583    -161
COOLING TOTAL      0                  2      -2
 SINCE 1/1       146                 83      63
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    37/240    DATE  09/02
HIGHEST GUST SPEED/DIRECTION    73/230    DATE  09/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.28
NUMBER OF DAYS FAIR           19
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     59

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               13     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      0
HAZE                      0

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

$$