288
CXUS55 KBYZ 012115
CLMMLS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
314 PM MDT WED OCT 01 2025
...............................
...THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1937 TO 2025
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
............................................
TEMPERATURE (F)
HIGHEST 94 09/01
LOWEST 37 09/06
AVG. MAXIMUM 81.7 75.6 6.1
AVG. MINIMUM 50.2 46.9 3.3
MEAN 65.9 61.2 4.7
DAYS MAX >= 90 3
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
TOTALS 0.72 1.07 -0.35
DAYS >= .01 5
DAYS >= .10 1
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.62 09/17 TO 09/17
DEGREE DAYS
HEATING TOTAL 52 176 -124
SINCE 7/1 65 211 -146
COOLING TOTAL 90 64 26
SINCE 1/1 799 727 72
............................................
WIND (MPH)
AVERAGE WIND SPEED 7.7
HIGHEST WIND SPEED/DIRECTION 33/330 DATE 09/04
HIGHEST GUST SPEED/DIRECTION 45/320 DATE 09/04
AVERAGE RH (PERCENT) 52
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 1
LIGHT RAIN 8 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 3 FOG W/VIS <= 1/4 MILE 2
HAZE 4
- 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 2025 MONTH IN REVIEW FOR MILES CITY
BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR SEPTEMBER 2025. 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 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 0.72 1.07 -0.35 TIED FOR THE 41ST DRIEST OUT OF 89 YEARS
(RECORD DRIEST WAS T IN 1960)
(DRIEST SINCE 0.31 IN 2024)
...MILES CITY SEPTEMBER 2025 BROKEN OR TIED DAILY PRECIPITATION RECORDS...
NONE
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 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 66.0 61.2 +4.8 TIED FOR THE 11TH WARMEST OUT OF 89 YEARS
(RECORD WARMEST WAS 69.4 IN 1998)
(WARMEST SINCE 67.1 IN 2024)
..MILES CITY AVERAGE HIGH TEMPERATURES
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 81.7 75.6 +6.1 8TH WARMEST OUT OF 89 YEARS
(RECORD WARMEST WAS 84.3 IN 1998)
(WARMEST SINCE 83.5 IN 2024)
...MILES CITY SEPTEMBER 2025 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...
NONE
...MILES CITY SEPTEMBER 2025 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...
NONE
..MILES CITY AVERAGE LOW TEMPERATURES
MONTH 2025 VALUES NORMALS DEPARTURE RANKING
SEPTEMBER 50.2 46.9 +3.3 19TH WARMEST OUT OF 89 YEARS
(RECORD WARMEST WAS 54.5 IN 1998)
(WARMEST SINCE 50.7 IN 2024)
...MILES CITY SEPTEMBER 2025 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...
60 ON SEPTEMBER 30 (OLD RECORD 57 IN 2005)
...MILES CITY SEPTEMBER 2025 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...
NONE
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