Climatological Report (Daily)
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291
CDUS45 KTFX 210739
CLILWT

CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
139 AM MDT FRI AUG 21 2026

...................................

...THE LEWISTOWN MT CLIMATE SUMMARY FOR AUGUST 20 2026...

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)
 YESTERDAY
  MAXIMUM         MM        MM  97    1931  80     MM       86
  MINIMUM         MM        MM  32    1916  49     MM       56
  AVERAGE         MM                        65     MM       71

PRECIPITATION (IN)
  YESTERDAY        0.00          2.67 1964   0.05  -0.05      T
  MONTH TO DATE    0.28                      1.09  -0.81     1.73
  SINCE OCT 1     16.38                     15.18   1.20    14.24
  SINCE JAN 1     13.79                     12.73   1.06    12.87

SNOWFALL (IN)
  YESTERDAY       MM
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  YESTERDAY       MM                         3     MM        0
  MONTH TO DATE   35                        35      0       18
  SINCE JUN 1    337                       326     11      263
  SINCE JUL 1     50                       100    -50       69

 COOLING
  YESTERDAY       MM                         2     MM        6
  MONTH TO DATE   42                        71    -29       61
  SINCE JUN 1    252                       189     63      140
  SINCE JAN 1    265                       190     75      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 YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    MM
 LOWEST     MM
 AVERAGE    MM

..........................................................


THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   80        97      1969
 MINIMUM TEMPERATURE (F)   49        29      1904


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.




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