Climatological Report (Daily)
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118
CDUS45 KTFX 180733
CLILWT

CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
133 AM MDT TUE AUG 18 2026

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

...THE LEWISTOWN MT CLIMATE SUMMARY FOR AUGUST 17 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  98    1906  81     MM       82
  MINIMUM         MM        MM  31    1910  50     MM       52
  AVERAGE         MM                        65     MM       67

PRECIPITATION (IN)
  YESTERDAY       MM             0.88 1990   0.06  MM        0.44
  MONTH TO DATE    T                         0.93  -0.93     1.73
  SINCE OCT 1     16.10                     15.02   1.08    14.24
  SINCE JAN 1     13.51                     12.57   0.94    12.87

SNOWFALL (IN)
  YESTERDAY       MM
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  YESTERDAY       MM                         2     MM        0
  MONTH TO DATE   24                        26     -2       18
  SINCE JUN 1    326                       317      9      263
  SINCE JUL 1     39                        91    -52       69

 COOLING
  YESTERDAY       MM                         3     MM        2
  MONTH TO DATE   42                        63    -21       41
  SINCE JUN 1    252                       181     71      120
  SINCE JAN 1    265                       182     83      123
...................................................................


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)   81        97      1964
 MINIMUM TEMPERATURE (F)   49        33      1902


SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE   619 AM MDT   SUNSET   823 PM MDT
AUGUST 19 2026........SUNRISE   620 AM MDT   SUNSET   822 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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