827
CXUS55 KMSO 052159
CLMBTM

CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
259 PM MST MON JAN 05 2026

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

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

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             66   12/27/1917
 LOW             -52   12/23/1983
HIGHEST           59   12/14         MM      MM       54
LOWEST                 12/28         MM      MM        4
AVG. MAXIMUM    41.3               30.7    10.6     39.5
AVG. MINIMUM    21.8                7.2    14.6     17.4
MEAN            31.6               19.0    12.6     28.5
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     4               16.8   -12.8        5
DAYS MIN <= 32    27               30.5    -3.5       31
DAYS MIN <= 0      1                9.6    -8.6        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        1.99   1996
 MINIMUM        0.02   1918
TOTALS          0.82               0.48    0.34     0.24
DAILY AVG.      0.03               0.02    0.01     0.01
DAYS >= .01       10                7.2     2.8        6
DAYS >= .10        2                1.3     0.7        0
DAYS >= .50        0                0.1    -0.1        0
DAYS >= 1.00       0                0.0     0.0        0
GREATEST
 24 HR. TOTAL   0.39   12/17 TO 12/17               0.10


DEGREE DAYS
HEATING TOTAL   1028               1427    -399
 SINCE 7/1      2899               3882    -983
COOLING TOTAL      0                  0       0
 SINCE 1/1        60                 83     -23
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.3
HIGHEST WIND SPEED/DIRECTION    43/290    DATE  12/17
HIGHEST GUST SPEED/DIRECTION    74/280    DATE  12/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.53
NUMBER OF DAYS FAIR            9
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW               11     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      3
HAZE                      6

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

$$