159
CDUS45 KTFX 122240
CLIHLN
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
440 PM MDT FRI SEP 12 2025
...............................
..THE HELENA MT CLIMATE SUMMARY FOR SEPTEMBER 12 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1866 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 78 146 PM 91 1953 75 3 62
1990
2015
MINIMUM 49 617 AM 22 1949 46 3 52
AVERAGE 64 60 4 57
PRECIPITATION (IN)
TODAY 0.00 0.75 1914 0.03 -0.03 0.13
MONTH TO DATE 0.00 0.41 -0.41 0.98
SINCE OCT 1 11.38 10.85 0.53 10.32
SINCE JAN 1 10.62 9.02 1.60 8.80
DEGREE DAYS
HEATING
TODAY 1 6 -5 8
MONTH TO DATE 11 56 -45 10
SINCE SEP 1 11 56 -45 10
SINCE JUL 1 37 119 -82 22
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 34 20 14 61
SINCE SEP 1 34 20 14 61
SINCE JAN 1 465 425 40 579
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 2.2
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 800 AM
LOWEST 28 300 PM
AVERAGE 56
......................................................
THE HELENA MT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 92 1959
MINIMUM TEMPERATURE (F) 46 27 1949
1970
1974
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 702 AM MDT SUNSET 745 PM MDT
SEPTEMBER 13 2025.....SUNRISE 704 AM MDT SUNSET 743 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page