Climatological Report (Daily)
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181
CDUS45 KRIW 200729
CLICPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT THU AUG 20 2026

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

...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 19 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         88   4:26 PM  97    2019  86      2       96
  MINIMUM         53   5:43 AM  37    2002  51      2       53
  AVERAGE         71                        68      3

PRECIPITATION (IN)
  YESTERDAY        0.00          1.35 1979   0.03  -0.03     0.00
  MONTH TO DATE    1.88                      0.54   1.34     0.23
  SINCE JUN 1      2.56                      3.07  -0.51     1.90
  SINCE JAN 1      6.21                      8.58  -2.37     6.82

SNOWFALL (IN)
  YESTERDAY        0.0           0.0  2020   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE JUN 1      0.0                       0.1   -0.1      0.0
  SINCE JUL 1      0.0                       0.0    0.0      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE    5                         7     -2        4
  SINCE JUN 1     97                       147    -50      100
  SINCE JUL 1      5                        21    -16        9

 COOLING
  YESTERDAY        6                         5      1       10
  MONTH TO DATE  127                       114     13      113
  SINCE JUN 1    504                       365    139      415
  SINCE JAN 1    505                       369    136      415
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     8.6


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    87           1:00 AM
 LOWEST     14           4:00 PM
 AVERAGE    51

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


THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   86        99      2025
 MINIMUM TEMPERATURE (F)   51        38      2016


SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE   6:18 AM MDT   SUNSET   8:00 PM MDT
AUGUST 21 2026........SUNRISE   6:19 AM MDT   SUNSET   7:58 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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