Climatological Report (Daily)
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687
CDUS45 KRIW 310730
CLICPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SUN MAY 31 2026

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

...THE CASPER WY CLIMATE SUMMARY FOR MAY 30 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         73   2:58 PM  92    1984  73      0       77
  MINIMUM         51  11:58 PM  29    2004  42      9       49
                                      2006
                                      2010
  AVERAGE         62                        57      5

PRECIPITATION (IN)
  YESTERDAY        T             1.15 1971   0.06  -0.06     0.00
  MONTH TO DATE    1.67                      2.14  -0.47     1.28
  SINCE MAR 1      3.11                      4.39  -1.28     4.20
  SINCE JAN 1      3.65                      5.44  -1.79     4.92

SNOWFALL (IN)
  YESTERDAY        0.0           T    1989   0.0    0.0      0.0
  MONTH TO DATE    2.5                       2.6   -0.1      0.3
  SINCE MAR 1     13.9                      23.4   -9.5     16.0
  SINCE JUL 1     29.6                      71.7  -42.1     26.5
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        3                         8     -5        2
  MONTH TO DATE  359                       402    -43      365
  SINCE MAR 1   1565                      1991   -426     1914
  SINCE JUL 1   5742                      7353  -1611     6929

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    1                         0      1        0
  SINCE MAR 1      1                         0      1        0
  SINCE JAN 1      1                         0      1        0
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED    16.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    77           3:00 AM
 LOWEST     23           2:00 PM
 AVERAGE    50

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


THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   73        91      2020
 MINIMUM TEMPERATURE (F)   42        27      1979


SUNRISE AND SUNSET
MAY 31 2026...........SUNRISE   5:30 AM MDT   SUNSET   8:37 PM MDT
JUNE  1 2026..........SUNRISE   5:30 AM MDT   SUNSET   8:38 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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