Text Products for CLM Issued by BIL

Climatological Report (Monthly)
Issued by NWS Billings, MT
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CXUS55 KBYZ 011146
CLMBIL

CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
545 AM MDT THU JUN 01 2023

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

...THE BILLINGS MT CLIMATE SUMMARY FOR THE MONTH OF MAY 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           85   05/22
LOWEST            38   05/01
AVG. MAXIMUM    73.1               66.9     6.2
AVG. MINIMUM    48.0               43.8     4.2
MEAN            60.6               55.3     5.3
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32     0
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
TOTALS          2.87               2.36    0.51
DAYS >= .01       14
DAYS >= .10        6
DAYS >= .50        2
DAYS >= 1.00       1
GREATEST
 24 HR. TOTAL   1.09   05/24 TO 05/25

SNOWFALL (INCHES)
TOTALS             T                0.9    -0.9
SINCE 7/1       56.1               57.4    -1.3
SNOWDEPTH AVG.     0
DAYS >= TRACE      2
DAYS >= 1.0        0
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL    157                314    -157
 SINCE 7/1      6956               6665     291
COOLING TOTAL     28                 14      14
 SINCE 1/1        28                 15      13
................................................

WIND (MPH)
AVERAGE WIND SPEED              8.1
HIGHEST WIND SPEED/DIRECTION    33/260    DATE  05/24
HIGHEST GUST SPEED/DIRECTION    40/240    DATE  05/24

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             12     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       4
LIGHT RAIN               19     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       2
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      3
HAZE                      4

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

&&

...MAY 2023 MONTH IN REVIEW FOR BILLINGS...

BELOW IS A SUMMARY OF THE TEMPERATURE...PRECIPITATION...AND WIND
STATISTICS FOR BILLINGS FOR MAY 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

MAY          2.87     2.36       +0.51      21ST WETTEST OUT OF 89 YEARS
                                            (RECORD WETTEST WAS 9.54 IN 2011)
                                            (WETTEST SINCE 5.22 IN 2018)

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

0.74 ON MAY  5 (OLD RECORD 0.51 IN 1978)

...BILLINGS MONTHLY SNOWFALL...

 MONTH   2023 VALUES  NORMALS    DEPARTURE  RANKING

MAY             T*      0.9       0.9      TIED FOR THE 21ST LEAST SNOWIEST OUT OF 89 YEARS
                                            (RECORD LEAST SNOWIEST WAS 0.0 TIED IN 2018)
                                            (LEAST SNOWIEST SINCE T IN 2022)

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

T ON MAY 27 (TIED RECORD IN 1955)

...BILLINGS AVERAGE TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

MAY          60.6      55.3      +5.3      4TH WARMEST OUT OF 89 YEARS
                                           (RECORD WARMEST WAS 64.7 IN 1936)
                                           (WARMEST SINCE 61.0 IN 1980)

...BILLINGS AVERAGE HIGH TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

MAY          73.1      66.9      +6.2      8TH WARMEST OUT OF 89 YEARS
                                           (RECORD WARMEST WAS 80.9 IN 1936)
                                           (WARMEST SINCE 73.7 IN 1985)

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

NONE

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

NONE

...BILLINGS AVERAGE LOW TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

MAY          48.0      43.8      +4.2      5TH WARMEST OUT OF 89 YEARS
                                           (RECORD WARMEST WAS 49.7 IN 1958)
                                           (WARMEST SINCE 48.6 IN 2018)

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

NONE

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

NONE

...BILLINGS MONTHLY WIND AVERAGES...

 MONTH   2023 VALUES  NORMALS    DEPARTURE  RANKING

MAY           8.1       9.9       -1.8      RECORD LEAST WINDIEST OUT OF 74 YEARS
                                            (OLD RECORD LEAST WINDIEST WAS 8.6 IN 1991)

$$
National Weather Service Weather Forecast Office
