030
CDUS45 KTFX 180744
CLIGTF
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
144 AM MDT MON MAY 18 2026
...............................
..THE GREAT FALLS MT CLIMATE SUMMARY FOR MAY 17 2026
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1886 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM MM MM 87 2006 65 MM 65
MINIMUM MM MM 26 2003 39 MM 35
AVERAGE MM 52 MM 50
PRECIPITATION (IN)
YESTERDAY MM 1.55 1949 0.08 MM 0.00
MONTH TO DATE 0.50 1.07 -0.57 1.87
SINCE OCT 1 6.22 6.90 -0.68 6.63
SINCE JAN 1 4.38 4.62 -0.24 5.55
SNOWFALL (IN)
YESTERDAY MM 2.1 1977 0.1 MM 0.0
MONTH TO DATE T 1.5 -1.5 0.0
SINCE MAR 1 25.0 21.0 4.0 5.2
SINCE JUL 1 41.6 65.4 -23.8 47.2
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY MM 13 MM 15
MONTH TO DATE 176 267 -91 195
SINCE MAR 1 1612 1903 -291 1595
SINCE JUL 1 5855 7373 -1518 6894
COOLING
YESTERDAY MM 0 MM 0
MONTH TO DATE 2 0 2 2
SINCE MAR 1 3 0 3 2
SINCE JAN 1 3 0 3 2
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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.
RAIN
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST MM
LOWEST MM
AVERAGE MM
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THE GREAT FALLS MT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 90 2006
MINIMUM TEMPERATURE (F) 39 27 1903
1977
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 545 AM MDT SUNSET 900 PM MDT
MAY 19 2026...........SUNRISE 544 AM MDT SUNSET 901 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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