168
CDUS45 KTFX 182240
CLIHLN
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
440 PM MDT MON MAY 18 2026
...............................
..THE HELENA MT CLIMATE SUMMARY FOR MAY 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 54 250 PM 91 2006 67 -13 54
MINIMUM 33 352 AM 26 1903 42 -9 46
AVERAGE 44 55 -11 50
PRECIPITATION (IN)
TODAY 0.00 1.10 1944 0.06 -0.06 0.42
MONTH TO DATE 0.10 0.91 -0.81 3.37
SINCE OCT 1 6.19 5.09 1.10 7.04
SINCE JAN 1 3.52 3.26 0.26 6.28
DEGREE DAYS
HEATING
TODAY 21 10 11 15
MONTH TO DATE 202 236 -34 179
SINCE MAR 1 1502 1748 -246 1413
SINCE JUL 1 5794 7242 -1448 6485
COOLING
TODAY 0 0 0 0
MONTH TO DATE 1 0 1 4
SINCE MAR 1 1 0 1 4
SINCE JAN 1 1 0 1 4
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 6.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 1200 AM
LOWEST 30 200 PM
AVERAGE 58
......................................................
THE HELENA MT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 90 1954
MINIMUM TEMPERATURE (F) 43 24 1997
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 550 AM MDT SUNSET 859 PM MDT
MAY 19 2026...........SUNRISE 549 AM MDT SUNSET 900 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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