Climatological Report (Monthly)
Issued by NWS Billings, MT

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203
CXUS55 KBYZ 011204
CLMBIL

CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
502 AM MST WED JAN 01 2025

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

...THE BILLINGS MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1934 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART
                VALUE   DATE(S)   VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST           62   12/03
LOWEST            12   12/02
AVG. MAXIMUM    46.6               36.1    10.5
AVG. MINIMUM    26.8               19.2     7.6
MEAN            36.7               27.6     9.1
DAYS MAX >= 90     0
DAYS MAX <= 32     1
DAYS MIN <= 32    25
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
TOTALS          0.50               0.57   -0.07
DAYS >= .01        5
DAYS >= .10        2
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.25   12/14 TO 12/15

SNOWFALL (INCHES)
TOTALS           2.3                9.8    -7.5
SINCE 7/1        6.2               21.1   -14.9
SNOWDEPTH AVG.     0
DAYS >= TRACE      5
DAYS >= 1.0        1
GREATEST
 SNOW DEPTH        1   12/31
 24 HR TOTAL     1.7   12/30 TO 12/30

DEGREE DAYS
HEATING TOTAL    870               1158    -288
 SINCE 7/1      2142               2761    -619
COOLING TOTAL      0                  0       0
 SINCE 1/1       790                662     128
................................................

WIND (MPH)
AVERAGE WIND SPEED              11.5
HIGHEST WIND SPEED/DIRECTION    44/270    DATE  12/18
HIGHEST GUST SPEED/DIRECTION    62/280    DATE  12/18

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                5     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

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

&&

...DECEMBER 2024 MONTH IN REVIEW FOR BILLINGS...

BELOW IS A SUMMARY OF THE TEMPERATURE...PRECIPITATION...AND WIND
STATISTICS FOR BILLINGS FOR DECEMBER 2024. 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   2024 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER     0.50     0.57       -0.07      44TH DRIEST OUT OF 91 YEARS
                                            (RECORD DRIEST WAS 0.05 IN 1957)
                                            (DRIEST SINCE 0.33 IN 2023)

...BILLINGS DECEMBER 2024 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

...BILLINGS MONTHLY SNOWFALL...

 MONTH   2024 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER      2.3       9.8       -7.5      TIED FOR THE 15TH LEAST SNOWIEST OUT OF 91 YEARS
                                            (RECORD LEAST SNOWIEST WAS T TIED IN 1943)
                                            (LEAST SNOWIEST SINCE 1.8 IN 2023)

...BILLINGS DECEMBER 2024 BROKEN OR TIED DAILY SNOWFALL RECORDS...

NONE

...BILLINGS AVERAGE TEMPERATURES...

 MONTH   2024 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     36.7      27.6      +9.1      3RD WARMEST OUT OF 91 YEARS
                                           (RECORD WARMEST WAS 37.3 IN 1957)
                                           (WARMEST SINCE 36.9 IN 2023)

...BILLINGS AVERAGE HIGH TEMPERATURES...

 MONTH   2024 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     46.6      36.1     +10.5      TIED FOR THE 3RD WARMEST OUT OF 91 YEARS
                                           (RECORD WARMEST WAS 48.9 IN 1939)
                                           (WARMEST SINCE 47.3 IN 1979)

...BILLINGS DECEMBER 2024 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

58 ON DECEMBER 20 (TIED RECORD IN 1941)
58 ON DECEMBER 21 (OLD RECORD 57 IN 1974)

...BILLINGS DECEMBER 2024 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...BILLINGS AVERAGE LOW TEMPERATURES...

 MONTH   2024 VALUES  NORMALS   DEPARTURE  RANKING

DECEMBER     26.8      19.2      +7.6      3RD WARMEST OUT OF 91 YEARS
                                           (RECORD WARMEST WAS 28.0 TIED IN 2023)
                                           (WARMEST SINCE 28.0 IN 2023)

...BILLINGS DECEMBER 2024 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

41 ON DECEMBER  7 (OLD RECORD 40 IN 2008)

...BILLINGS DECEMBER 2024 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

...BILLINGS MONTHLY WIND AVERAGES...

 MONTH   2024 VALUES  NORMALS    DEPARTURE  RANKING

DECEMBER     11.5      12.9       -1.4      12TH LEAST WINDIEST OUT OF 76 YEARS
                                            (RECORD LEAST WINDIEST WAS 10.3 IN 1983)
                                            (LEAST WINDIEST SINCE 10.9 IN 2021)

$$