Climatological Report (Daily)
Issued by NWS
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734
CDUS45 KTFX 182240
CLIHLN
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
440 PM MDT FRI SEP 18 2026
...................................
...THE HELENA MT CLIMATE SUMMARY FOR SEPTEMBER 18 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1866 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 77 220 PM 91 1966 73 4 78
MINIMUM 50 318 AM 19 1965 44 6 45
AVERAGE 64 58 6 62
PRECIPITATION (IN)
TODAY 0.00 2.10 1882 0.03 -0.03 0.00
MONTH TO DATE 0.73 0.60 0.13 0.57
SINCE OCT 1 13.21 11.04 2.17 11.95
SINCE JAN 1 10.54 9.21 1.33 11.19
DEGREE DAYS
HEATING
TODAY 1 7 -6 3
MONTH TO DATE 79 95 -16 34
SINCE SEP 1 79 95 -16 34
SINCE JUL 1 103 158 -55 60
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 8 26 -18 34
SINCE SEP 1 8 26 -18 34
SINCE JAN 1 493 431 62 465
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 3.3
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 500 AM
LOWEST 36 300 PM
AVERAGE 61
..........................................................
THE HELENA MT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 94 2009
MINIMUM TEMPERATURE (F) 44 25 1965
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 710 AM MDT SUNSET 733 PM MDT
SEPTEMBER 19 2026.....SUNRISE 711 AM MDT SUNSET 731 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$