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 ................................................................... 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 .......................................................... 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. $$