749
CXUS55 KBYZ 011317
CLMMLS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
715 AM MDT MON JUN 01 2026
...............................
..THE MILES CITY MT CLIMATE SUMMARY FOR THE MONTH OF MAY 2026
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1937 TO 2026
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
............................................
TEMPERATURE (F)
HIGHEST 96 05/26
LOWEST 21 05/06
AVG. MAXIMUM 72.7 68.1 4.6
AVG. MINIMUM 43.8 42.9 0.9
MEAN 58.3 55.5 2.8
DAYS MAX >= 90 6
DAYS MAX <= 32 0
DAYS MIN <= 32 5
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
TOTALS 2.10 2.73 -0.63
DAYS >= .01 3
DAYS >= .10 3
DAYS >= .50 2
DAYS >= 1.00 1
GREATEST
24 HR. TOTAL 1.61 05/30 TO 05/31
DEGREE DAYS
HEATING TOTAL 276 310 -34
SINCE 7/1 6227 7485 -1258
COOLING TOTAL 75 15 60
SINCE 1/1 77 16 61
............................................
WIND (MPH)
AVERAGE WIND SPEED 10.9
HIGHEST WIND SPEED/DIRECTION 41/330 DATE 05/13
HIGHEST GUST SPEED/DIRECTION 58/330 DATE 05/13
AVERAGE RH (PERCENT) 51
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 3
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 4 FOG W/VIS <= 1/4 MILE 1
HAZE 6
- 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.
..MAY 2026 MONTH IN REVIEW FOR MILES CITY
BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR MILES CITY FOR MAY 2026. 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 2026 VALUES NORMALS DEPARTURE RANKING
MAY 2.10 2.73 -0.63 39TH WETTEST OUT OF 90 YEARS
(RECORD WETTEST WAS 9.35 IN 2011)
(WETTEST SINCE 4.16 IN 2024)
..MILES CITY MAY 2026 BROKEN OR TIED DAILY PRECIPITATION RECORDS
1.05 ON MAY 31 (OLD RECORD 0.99 IN 2014)
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 2026 VALUES NORMALS DEPARTURE RANKING
MAY 58.3 55.5 +2.8 25TH WARMEST OUT OF 90 YEARS
(RECORD WARMEST WAS 64.8 IN 1958)
(WARMEST SINCE 59.1 IN 2025)
..MILES CITY AVERAGE HIGH TEMPERATURES
MONTH 2026 VALUES NORMALS DEPARTURE RANKING
MAY 72.7 68.1 +4.6 18TH WARMEST OUT OF 90 YEARS
(RECORD WARMEST WAS 80.3 IN 1958)
(WARMEST SINCE 74.3 IN 2023)
...MILES CITY MAY 2026 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...
92 ON MAY 25 (OLD RECORD 90 IN 1969)
...MILES CITY MAY 2026 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...
NONE
..MILES CITY AVERAGE LOW TEMPERATURES
MONTH 2026 VALUES NORMALS DEPARTURE RANKING
MAY 43.8 42.9 +0.9 41ST COLDEST OUT OF 90 YEARS
(RECORD COLDEST WAS 38.7 IN 1950)
(COLDEST SINCE 41.0 IN 2024)
...MILES CITY MAY 2026 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...
65 ON MAY 26 (OLD RECORD 61 IN 2003)
67 ON MAY 27 (OLD RECORD 62 IN 2018)
68 ON MAY 28 (OLD RECORD 62 IN 1949)
...MILES CITY MAY 2026 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...
27 ON MAY 5 (TIED RECORD IN 1967)
21 ON MAY 6 (OLD RECORD 28 IN 1946)
25 ON MAY 19 (OLD RECORD 28 IN 1968)
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