879
CXUS55 KMSO 022143
CLMBTM
CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
343 PM MDT TUE JUN 02 2026
...............................
..THE BUTTE MT CLIMATE SUMMARY FOR THE MONTH OF MAY 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 90 05/28/1919
LOW 9 05/01/1975
05/08/1965
HIGHEST 84 05/28 MM MM 87
LOWEST 19 05/19 MM MM 25
AVG. MAXIMUM 64.6 61.0 3.6 64.2
AVG. MINIMUM 33.7 34.3 -0.6 35.4
MEAN 49.2 47.6 1.6 49.8
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 14 12.0 2.0 9
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 5.84 1927
MINIMUM 0.09 1934
TOTALS 1.64 2.02 -0.38 2.84
DAILY AVG. 0.05 0.07 -0.01 0.09
DAYS >= .01 7 13.0 -6.0 13
DAYS >= .10 3 6.1 -3.1 8
DAYS >= .50 1 0.8 0.2 1
DAYS >= 1.00 1 0.1 0.9 0
GREATEST
24 HR. TOTAL 1.23 05/30 TO 05/31 0.78
DEGREE DAYS
HEATING TOTAL 482 538 -56
SINCE 7/1 7034 8837 -1803
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
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WIND (MPH)
AVERAGE WIND SPEED 6.9
HIGHEST WIND SPEED/DIRECTION 41/190 DATE 05/13
HIGHEST GUST SPEED/DIRECTION 67/190 DATE 05/13
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.37
NUMBER OF DAYS FAIR 18
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 53
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 3
LIGHT RAIN 7 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 2 SLEET 0
FOG 5 FOG W/VIS <= 1/4 MILE 1
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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