Climatological Report (Daily)
Issued by NWS
Issued by NWS
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008
CDUS45 KTFX 182240
CLILWT
CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
440 PM MDT MON AUG 18 2025
...................................
...THE LEWISTOWN MT CLIMATE SUMMARY FOR AUGUST 18 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1896 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 84 255 PM 97 1964 81 3 93
MINIMUM 50 535 AM 33 1902 49 1 53
AVERAGE 67 65 2 73
PRECIPITATION (IN)
TODAY 0.00 0.90 2016 0.05 -0.05 0.00
MONTH TO DATE 1.73 0.98 0.75 0.47
SINCE OCT 1 14.24 15.07 -0.83 14.26
SINCE JAN 1 12.87 12.62 0.25 11.80
DEGREE DAYS
HEATING
TODAY 0 3 -3 0
MONTH TO DATE 18 29 -11 27
SINCE JUN 1 263 320 -57 318
SINCE JUL 1 69 94 -25 75
COOLING
TODAY 2 3 -1 8
MONTH TO DATE 43 66 -23 68
SINCE JUN 1 122 184 -62 225
SINCE JAN 1 125 185 -60 225
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (120)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92
LOWEST 34
AVERAGE 63
..........................................................
THE LEWISTOWN MT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 97 2008
MINIMUM TEMPERATURE (F) 49 31 1907
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 619 AM MDT SUNSET 823 PM MDT
AUGUST 19 2025........SUNRISE 621 AM MDT SUNSET 821 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$