Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KTFX 212240
CLILWT
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
440 PM MDT FRI AUG 21 2026
...................................
...THE LEWISTOWN MT CLIMATE SUMMARY FOR AUGUST 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 97 1969 80 MM 77
MINIMUM MM MM 29 1904 49 MM 53
AVERAGE MM 64 MM 65
PRECIPITATION (IN)
TODAY 0.00 1.80 1918 0.06 -0.06 0.00
MONTH TO DATE 0.28 1.15 -0.87 1.73
SINCE OCT 1 16.38 15.24 1.14 14.24
SINCE JAN 1 13.79 12.79 1.00 12.87
DEGREE DAYS
HEATING
TODAY MM 3 MM 0
MONTH TO DATE 35 38 -3 18
SINCE JUN 1 337 329 8 263
SINCE JUL 1 50 103 -53 69
COOLING
TODAY MM 2 MM 0
MONTH TO DATE 42 73 -31 61
SINCE JUN 1 252 191 61 140
SINCE JAN 1 265 192 73 143
...................................................................
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) 80 98 1976
MINIMUM TEMPERATURE (F) 48 34 1992
SUNRISE AND SUNSET
AUGUST 21 2026........SUNRISE 623 AM MDT SUNSET 818 PM MDT
AUGUST 22 2026........SUNRISE 624 AM MDT SUNSET 816 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$