032
CDUS45 KTFX 180744
CLIHLN
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
144 AM MDT MON MAY 18 2026
...............................
..THE HELENA MT CLIMATE SUMMARY FOR MAY 17 2026
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)
YESTERDAY
MAXIMUM MM MM 90 2006 67 MM 68
MINIMUM MM MM 26 1943 42 MM 40
AVERAGE MM 54 MM 54
PRECIPITATION (IN)
YESTERDAY MM 0.84 2017 0.07 MM 0.09
MONTH TO DATE 0.08 0.85 -0.77 2.95
SINCE OCT 1 6.17 5.03 1.14 6.62
SINCE JAN 1 3.50 3.20 0.30 5.86
SNOWFALL (IN)
YESTERDAY MM 4.0 1903 0.0 MM 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE MAR 1 9.3 7.6 1.7 1.0
SINCE JUL 1 22.3 37.2 -14.9 36.8
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY MM 11 MM 11
MONTH TO DATE 155 226 -71 164
SINCE MAR 1 1455 1738 -283 1398
SINCE JUL 1 5747 7232 -1485 6470
COOLING
YESTERDAY MM 0 MM 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 MM HIGHEST WIND DIRECTION MM
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED MM
SKY COVER
AVERAGE SKY COVER MM
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST MM
LOWEST MM
AVERAGE MM
......................................................
THE HELENA MT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 91 2006
MINIMUM TEMPERATURE (F) 42 26 1903
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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