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. $$