Climatological Report (Monthly)
Issued by NWS Missoula, MT

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CXUS55 KMSO 021819
CLMMSO

CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1119 AM MST TUE JAN 02 2024

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

...THE MISSOULA MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1893 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             67   12/01/2021
 LOW             -30   12/23/1983
                       12/17/1964
HIGHEST           51   12/06         MM      MM       47
LOWEST             8   12/25         MM      MM      -19
AVG. MAXIMUM    36.4               30.9     5.5     30.0
AVG. MINIMUM    22.6               17.8     4.8     15.0
MEAN            29.5               24.4     5.1     22.5
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     8               15.6    -7.6       15
DAYS MIN <= 32    29               29.7    -0.7       30
DAYS MIN <= 0      0                1.8    -1.8        5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        7.09   1917
 MINIMUM        0.11   1909
TOTALS          0.50               1.08   -0.58     1.50
DAILY AVG.      0.02               0.03   -0.01     0.05
DAYS >= .01        6               12.6    -6.6       16
DAYS >= .10        1                3.7    -2.7        7
DAYS >= .50        0                0.1    -0.1        0
DAYS >= 1.00       0                0.0     0.0        0
GREATEST
 24 HR. TOTAL   0.26   12/10 TO 12/10               0.23

SNOWFALL (INCHES)
TOTALS           5.5               11.6    -6.1     17.6
SINCE 7/1        8.6               18.0    -9.4       MM
DAYS >= TRACE     14                9.5     4.5       22
DAYS >= 1.0        2                3.3    -1.3        8
GREATEST
 SNOW DEPTH        3   12/11                          10
 24 HR TOTAL      MM                                  MM

DEGREE DAYS
HEATING TOTAL   1096               1260    -164
 SINCE 7/1      2711               3219    -508
COOLING TOTAL      0                  0       0
 SINCE 1/1       536                307     229
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              2.1
HIGHEST WIND SPEED/DIRECTION    24/150    DATE  12/02
                                24/270          12/07
HIGHEST GUST SPEED/DIRECTION    34/150    DATE  12/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.69
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         18

AVERAGE RH (PERCENT)     81

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       3
LIGHT SNOW               11     SLEET                      1
FOG                      22     FOG W/VIS <= 1/4 MILE     10
HAZE                      5

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

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