Climatological Report (Daily)
Issued by NWS Riverton, WY

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718
CDUS45 KRIW 180726
CLIRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
126 AM MDT FRI SEP 18 2026

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

...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 17 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         76   2:53 PM  85    2004  74      2       69
                                      2018
  MINIMUM         54   7:26 AM  34    1996  44     10       45
  AVERAGE         65                        59      6       57

PRECIPITATION (IN)
  YESTERDAY        0.01          0.44        0.02  -0.01     0.00
  MONTH TO DATE    0.01                      0.34  -0.33     0.08
  SINCE SEP 1      0.01                      0.34  -0.33     0.08
  SINCE JAN 1      2.98                      6.70  -3.72     6.33

SNOWFALL (IN)
  YESTERDAY        0.0           1.5  2003                   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                         7     -7        8
  MONTH TO DATE   21                        77    -56       45
  SINCE SEP 1     21                        77    -56       45
  SINCE JUL 1     23                       113    -90       48

 COOLING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE   43                        27     16       36
  SINCE SEP 1     43                        27     16       36
  SINCE JAN 1    756                       495    261      610
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED     7.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    67          10:00 PM
 LOWEST     34           2:00 PM
 AVERAGE    51

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


THE RIVERTON WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   73        90      2014
 MINIMUM TEMPERATURE (F)   44        28      2003


SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE   6:57 AM MDT   SUNSET   7:18 PM MDT
SEPTEMBER 19 2026.....SUNRISE   6:58 AM MDT   SUNSET   7:16 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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