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CDUS45 KTFX 212240
CLILWT
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
440 PM MDT THU MAY 21 2026
...............................
..THE LEWISTOWN MT CLIMATE SUMMARY FOR MAY 21 2026
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1896 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM MM MM 89 1928 64 MM 58
MINIMUM MM MM 24 1931 39 MM 33
AVERAGE MM 52 MM 46
PRECIPITATION (IN)
TODAY 0.00 1.74 1962 0.11 -0.11 0.00
MONTH TO DATE 0.99 1.72 -0.73 2.54
SINCE OCT 1 8.55 7.82 0.73 6.71
SINCE JAN 1 5.96 5.37 0.59 5.34
DEGREE DAYS
HEATING
TODAY MM 13 MM 19
MONTH TO DATE 320 349 -29 301
SINCE MAR 1 1868 2069 -201 1866
SINCE JUL 1 6555 7835 -1280 7428
COOLING
TODAY MM 0 MM 0
MONTH TO DATE 0 0 0 2
SINCE MAR 1 0 0 0 2
SINCE JAN 1 0 0 0 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 TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST MM
LOWEST MM
AVERAGE MM
......................................................
THE LEWISTOWN MT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 93 1928
MINIMUM TEMPERATURE (F) 40 24 1930
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 535 AM MDT SUNSET 854 PM MDT
MAY 22 2026...........SUNRISE 534 AM MDT SUNSET 855 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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