Climatological Report (Daily)
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810
CDUS45 KTFX 200734
CLILWT

CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
134 AM MDT THU AUG 20 2026

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

...THE LEWISTOWN MT CLIMATE SUMMARY FOR AUGUST 19 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    2008  81     MM       93
  MINIMUM         MM        MM  31    1907  49     MM       58
  AVERAGE         MM                        65     MM       76

PRECIPITATION (IN)
  YESTERDAY       MM             1.47 1964   0.06  MM        0.00
  MONTH TO DATE    0.28                      1.04  -0.76     1.73
  SINCE OCT 1     16.38                     15.13   1.25    14.24
  SINCE JAN 1     13.79                     12.68   1.11    12.87

SNOWFALL (IN)
  YESTERDAY       MM
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  YESTERDAY       MM                         3     MM        0
  MONTH TO DATE   35                        32      3       18
  SINCE JUN 1    337                       323     14      263
  SINCE JUL 1     50                        97    -47       69

 COOLING
  YESTERDAY       MM                         3     MM       11
  MONTH TO DATE   42                        69    -27       55
  SINCE JUN 1    252                       187     65      134
  SINCE JAN 1    265                       188     77      137
...................................................................


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      1931
 MINIMUM TEMPERATURE (F)   49        32      1916


SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE   622 AM MDT   SUNSET   820 PM MDT
AUGUST 21 2026........SUNRISE   623 AM MDT   SUNSET   818 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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