Climatological Report (Daily)
Issued by NWS Riverton, WY

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041
CDUS45 KRIW 110813
CLIRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
213 AM MDT FRI SEP 11 2026

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

...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 10 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         85   4:10 PM  90    2021  77      8       87
  MINIMUM         52   5:18 AM  31    2007  47      5       49
  AVERAGE         69                        62      7       68

PRECIPITATION (IN)
  YESTERDAY        0.00          0.23        0.03  -0.03     0.00
  MONTH TO DATE    T                         0.18  -0.18      T
  SINCE SEP 1      T                         0.18  -0.18      T
  SINCE JAN 1      2.97                      6.54  -3.57     6.25

SNOWFALL (IN)
  YESTERDAY        0.0           0.0  2020                   0.0
  MONTH TO DATE    0.0                                       0.0
  SINCE SEP 1      0.0                                       0.0
  SINCE JUL 1      0.0                                       0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         5     -5        0
  MONTH TO DATE    3                        36    -33       12
  SINCE SEP 1      3                        36    -33       12
  SINCE JUL 1      5                        72    -67       15

 COOLING
  YESTERDAY        4                         1      3        3
  MONTH TO DATE   37                        20     17       28
  SINCE SEP 1     37                        20     17       28
  SINCE JAN 1    750                       488    262      602
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED    10.3


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    25           3:00 AM
 LOWEST      9           4:00 PM
 AVERAGE    17

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


THE RIVERTON WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        87      2004
                                             2017
                                             2018
 MINIMUM TEMPERATURE (F)   46        30      2014


SUNRISE AND SUNSET
SEPTEMBER 11 2026.....SUNRISE   6:49 AM MDT   SUNSET   7:31 PM MDT
SEPTEMBER 12 2026.....SUNRISE   6:50 AM MDT   SUNSET   7:29 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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