Climatological Report (Daily)
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112
CDUS45 KRIW 120728
CLIGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SAT SEP 12 2026

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

...THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 11 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         80  10:51 AM  91    2017  79      1       85
  MINIMUM         52  11:59 PM  34    2014  47      5       57
  AVERAGE         66                        63      3       71

PRECIPITATION (IN)
  YESTERDAY        0.00          T    2000   0.02  -0.02     0.00
                                      2005
                                      2021
  MONTH TO DATE    T                         0.24  -0.24     0.01
  SINCE SEP 1      T                         0.24  -0.24     0.01
  SINCE JAN 1      2.34                      4.06  -1.72     4.21

DEGREE DAYS
 HEATING
  YESTERDAY        0                         4     -4        0
  MONTH TO DATE    6                        31    -25        9
  SINCE SEP 1      6                        31    -25        9
  SINCE JUL 1      8                        50    -42        9

 COOLING
  YESTERDAY        1                         2     -1        6
  MONTH TO DATE   53                        32     21       39
  SINCE SEP 1     53                        32     21       39
  SINCE JAN 1    851                       728    123      780
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    33   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    43   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED    13.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    63          11:00 PM
 LOWEST     19          12:00 AM
 AVERAGE    41

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


THE GREYBULL WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   79        93      2017
 MINIMUM TEMPERATURE (F)   46        30      2014


SUNRISE AND SUNSET
SEPTEMBER 12 2026.....SUNRISE   6:48 AM MDT   SUNSET   7:28 PM MDT
SEPTEMBER 13 2026.....SUNRISE   6:49 AM MDT   SUNSET   7:26 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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