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000
CXUS55 KBYZ 011037
CLMMLS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
434 AM MDT SUN OCT 01 2023

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

...THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1937 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART
                VALUE   DATE(S)   VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST           96   09/02
                       09/03
LOWEST            45   09/15
AVG. MAXIMUM    78.5               75.6     2.9
AVG. MINIMUM    52.7               46.9     5.8
MEAN            65.6               61.2     4.4
DAYS MAX >= 90     3
DAYS MAX <= 32     0
DAYS MIN <= 32     0
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
TOTALS          2.40               1.07    1.33
DAYS >= .01        6
DAYS >= .10        5
DAYS >= .50        1
DAYS >= 1.00       1
GREATEST
 24 HR. TOTAL   1.74   09/21 TO 09/22

DEGREE DAYS
HEATING TOTAL     48                176    -128
 SINCE 7/1        63                211    -148
COOLING TOTAL     76                 64      12
 SINCE 1/1       830                727     103
................................................

WIND (MPH)
AVERAGE WIND SPEED              9.1
HIGHEST WIND SPEED/DIRECTION    33/260    DATE  09/03
HIGHEST GUST SPEED/DIRECTION    44/260    DATE  09/03

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       9
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     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.

&&

THIS IS AN AUTOMATED...UNATTENDED WEATHER STATION AND MAY
UNDERESTIMATE WINTER PRECIPITATION.

...SEPTEMBER 2023 MONTH IN REVIEW FOR MILES CITY...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR SEPTEMBER 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 AND TEMPERATURES USE A PERIOD OF RECORD
THAT STARTED IN FEBRUARY 1937 AT THE MILES CITY AIRPORT.

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

...MILES CITY MONTHLY PRECIPITATION...

 MONTH   2023 VALUES  NORMALS    DEPARTURE  RANKING

SEPTEMBER    2.40     1.07       +1.33      10TH WETTEST OUT OF 87 YEARS
                                            (RECORD WETTEST WAS 4.67 IN 1941)
                                            (WETTEST SINCE 2.85 IN 2019)

...MILES CITY SEPTEMBER 2023 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

1.60 ON SEPTEMBER 22 (OLD RECORD 0.93 IN 2006)

NOTE: SINCE THE LATE 1990S...MILES CITY BECAME AN AUTOMATED AND UNATTENDED
WEATHER STATION. PRECIPITATION AMOUNTS IN THE WINTER MAY BE UNDERESTIMATED.

...MILES CITY AVERAGE TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    65.6      61.2      +4.4      TIED FOR THE 13TH WARMEST OUT OF 87 YEARS
                                           (RECORD WARMEST WAS 69.4 IN 1998)
                                           (WARMEST SINCE 66.7 IN 2022)

...MILES CITY AVERAGE HIGH TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    78.5      75.6      +2.9      TIED FOR THE 21ST WARMEST OUT OF 87 YEARS
                                           (RECORD WARMEST WAS 84.3 IN 1998)
                                           (WARMEST SINCE 82.0 IN 2022)

...MILES CITY SEPTEMBER 2023 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY SEPTEMBER 2023 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...MILES CITY AVERAGE LOW TEMPERATURES...

 MONTH   2023 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    52.7      46.9      +5.8      TIED FOR THE 5TH WARMEST OUT OF 87 YEARS
                                           (RECORD WARMEST WAS 54.5 IN 1998)
                                           (WARMEST SINCE 52.8 IN 2013)

...MILES CITY SEPTEMBER 2023 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

54 ON SEPTEMBER 23 (TIED RECORD IN 1953)

...MILES CITY SEPTEMBER 2023 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

$$