Climatological Report (Monthly)
Issued by NWS Billings, MT

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000
CXUS55 KBYZ 011157
CLMBIL

CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
456 AM MST MON JAN 01 2024

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

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

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1934 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART
                VALUE   DATE(S)   VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST           61   12/05
                       12/06
LOWEST            13   12/25
AVG. MAXIMUM    45.8               36.1     9.7
AVG. MINIMUM    28.0               19.2     8.8
MEAN            36.9               27.6     9.3
DAYS MAX >= 90     0
DAYS MAX <= 32     3
DAYS MIN <= 32    21
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
TOTALS          0.33               0.57   -0.24
DAYS >= .01        3
DAYS >= .10        1
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.23   12/23 TO 12/23

SNOWFALL (INCHES)
TOTALS           1.8                9.8    -8.0
SINCE 7/1        8.5               21.1   -12.6
SNOWDEPTH AVG.     0
DAYS >= TRACE      3
DAYS >= 1.0        1
GREATEST
 SNOW DEPTH        1   12/24
                       12/25
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL    865               1158    -293
 SINCE 7/1      2224               2761    -537
COOLING TOTAL      0                  0       0
 SINCE 1/1       715                662      53
................................................

WIND (MPH)
AVERAGE WIND SPEED              13.8
HIGHEST WIND SPEED/DIRECTION    36/270    DATE  12/03
HIGHEST GUST SPEED/DIRECTION    48/310    DATE  12/07

AVERAGE RH (PERCENT)     54

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                3     SLEET                      0
FOG                       2     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.

&&

...DECEMBER 2023 MONTH IN REVIEW FOR BILLINGS...

BELOW IS A SUMMARY OF THE TEMPERATURE...PRECIPITATION...AND WIND
STATISTICS FOR BILLINGS FOR DECEMBER 2023. ALL TEMPERATURES ARE IN
DEGREES FAHRENHEIT AND ALL PRECIPITATION AMOUNTS ARE IN INCHES. NORMALS
ARE 30 YEAR AVERAGES CALCULATED FROM 1991 TO 2020. MONTHLY RANKINGS
FOR PRECIPITATION...SNOWFALL...AND TEMPERATURES USE A PERIOD OF RECORD
THAT STARTED IN AUGUST 1934 AT THE BILLINGS AIRPORT. MONTHLY RANKINGS
FOR WIND USE A PERIOD OF RECORD THAT STARTED IN 1984.

NUMBERS DENOTED WITH AN * IS MISSING DATA IN THE CALCULATION.

...BILLINGS MONTHLY PRECIPITATION...

 MONTH   2023 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER     0.33     0.57       -0.24      TIED FOR THE 33RD DRIEST OUT OF 90 YEARS
                                            (RECORD DRIEST WAS 0.05 IN 1957)
                                            (DRIEST SINCE 0.14 IN 2019)

...BILLINGS DECEMBER 2023 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

...BILLINGS MONTHLY SNOWFALL...

 MONTH   2023 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER      1.8       9.8       -8.0      11TH LEAST SNOWIEST OUT OF 90 YEARS
                                            (RECORD LEAST SNOWIEST WAS T TIED IN 1943)
                                            (LEAST SNOWIEST SINCE 1.4 IN 2019)

...BILLINGS DECEMBER 2023 BROKEN OR TIED DAILY SNOWFALL RECORDS...

NONE

...BILLINGS AVERAGE TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     36.9      27.6      +9.3      2ND WARMEST OUT OF 90 YEARS
                                           (RECORD WARMEST WAS 37.3 IN 1957)
                                           (WARMEST SINCE 37.3 IN 1957)

...BILLINGS AVERAGE HIGH TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     45.8      36.1      +9.7      4TH WARMEST OUT OF 90 YEARS
                                           (RECORD WARMEST WAS 48.9 IN 1939)
                                           (WARMEST SINCE 47.3 IN 1979)

...BILLINGS DECEMBER 2023 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...BILLINGS DECEMBER 2023 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...BILLINGS AVERAGE LOW TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     28.0      19.2      +8.8      TIED FOR THE RECORD WARMEST OUT OF 90 YEARS
                                           (OLD RECORD WARMEST WAS 28.0 IN 1957)

...BILLINGS DECEMBER 2023 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

43 ON DECEMBER  5 (OLD RECORD 40 IN 1940)
47 ON DECEMBER  6 (OLD RECORD 40 IN 1939)

...BILLINGS DECEMBER 2023 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

...BILLINGS MONTHLY WIND AVERAGES...

 MONTH   2023 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER     13.8      12.9       +0.9      TIED FOR THE 19TH WINDIEST OUT OF 75 YEARS
                                            (RECORD WINDIEST WAS 15.9 IN 1956)
                                            (WINDIEST SINCE 14.2 IN 2020)

$$



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