Climatological Report (Monthly)
Issued by NWS Missoula, MT

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CXUS55 KMSO 012108
CLMBTM

CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
308 PM MDT THU OCT 01 2020

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

...THE BUTTE MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2020

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             93   09/15/2000
                       09/05/1998
                       09/04/1998
 LOW               3   09/24/1926
HIGHEST           93R  09/05         MM      MM       88
LOWEST            25   09/08         MM      MM       22
AVG. MAXIMUM    74.0               68.3     5.7     65.9
AVG. MINIMUM    35.5               35.6    -0.1     40.4
MEAN            54.8               51.9     2.8     53.2
DAYS MAX >= 90     2                0.2     1.8        0
DAYS MAX <= 32     0                0.0     0.0        1
DAYS MIN <= 32     9                8.6     0.4        3
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.54   1947
 MINIMUM        0.00   1904
TOTALS          0.49               1.00   -0.51     1.95
DAILY AVG.      0.02               0.03   -0.01     0.07
DAYS >= .01        3                7.2    -4.2       12
DAYS >= .10        2                3.0    -1.0        5
DAYS >= .50        0                0.4    -0.4        1
DAYS >= 1.00       0                0.0     0.0        0
GREATEST
 24 HR. TOTAL   0.31   09/19 TO 09/19               0.60


DEGREE DAYS
HEATING TOTAL    302                393     -91
 SINCE 7/1       477                621    -144
COOLING TOTAL      2                  2       0
 SINCE 1/1        87                 81       6
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    32/020    DATE  09/07
HIGHEST GUST SPEED/DIRECTION    44/030    DATE  09/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.18
NUMBER OF DAYS FAIR           24
NUMBER OF DAYS PC              3
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     49

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                       3     FOG W/VIS <= 1/4 MILE      0
HAZE                      8

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

$$



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