Climatological Report (Daily)
Issued by NWS Riverton, WY

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295
CDUS45 KRIW 180728
CLIRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT TUE AUG 18 2026

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

...THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 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         83   2:54 PM  95    2013  86     -3       86
                                      2020
  MINIMUM         57   5:37 AM  41    2009  54      3       58
  AVERAGE         70                        70      0       72

PRECIPITATION (IN)
  YESTERDAY        T             0.40        0.02  -0.02     0.00
  MONTH TO DATE    0.17                      0.24  -0.07     0.01
  SINCE JUN 1      1.03                      1.72  -0.69     1.22
  SINCE JAN 1      2.46                      6.18  -3.72     5.74

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

DEGREE DAYS
 HEATING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE    2                         4     -2        2
  SINCE JUN 1     72                       129    -57       80
  SINCE JUL 1      2                        14    -12        2

 COOLING
  YESTERDAY        5                         5      0        7
  MONTH TO DATE  145                       116     29      127
  SINCE JUN 1    585                       407    178      512
  SINCE JAN 1    608                       415    193      518
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    40   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    54   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED     8.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    64          10:00 PM
 LOWEST     24           3:00 PM
 AVERAGE    44

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


THE RIVERTON WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   85        96      2010
 MINIMUM TEMPERATURE (F)   53        44      2015


SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE   6:23 AM MDT   SUNSET   8:11 PM MDT
AUGUST 19 2026........SUNRISE   6:24 AM MDT   SUNSET   8:10 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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