580
CDUS45 KTFX 200731
CLIGTF
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
131 AM MDT WED MAY 20 2026
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..THE GREAT FALLS MT CLIMATE SUMMARY FOR MAY 19 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 64 206 PM 94 1919 66 -2 63
MINIMUM 33 403 AM 30 1918 40 -7 34
1931
1997
AVERAGE 49 53 -4 49
PRECIPITATION (IN)
YESTERDAY T 0.61 1970 0.08 -0.08 0.00
MONTH TO DATE 0.72 1.24 -0.52 2.28
SINCE OCT 1 6.44 7.07 -0.63 7.04
SINCE JAN 1 4.60 4.79 -0.19 5.96
SNOWFALL (IN)
YESTERDAY 0.0 5.5 1903 0.1 -0.1 0.0
MONTH TO DATE 0.1 1.6 -1.5 0.0
SINCE MAR 1 25.1 21.1 4.0 5.2
SINCE JUL 1 41.7 65.5 -23.8 47.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 16 12 4 16
MONTH TO DATE 242 292 -50 228
SINCE MAR 1 1678 1928 -250 1628
SINCE JUL 1 5921 7398 -1477 6927
COOLING
YESTERDAY 0 0 0 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 28 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 13.9
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 73 1100 PM
LOWEST 31 200 PM
AVERAGE 52
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THE GREAT FALLS MT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 94 1897
MINIMUM TEMPERATURE (F) 40 26 2021
SUNRISE AND SUNSET
MAY 20 2026...........SUNRISE 543 AM MDT SUNSET 902 PM MDT
MAY 21 2026...........SUNRISE 541 AM MDT SUNSET 903 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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