Climatological Report (Daily)
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682
CDUS45 KRIW 310730
CLIP60

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

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

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 30 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         47   3:49 PM  75    2020  55     -8       69
  MINIMUM         40  11:59 PM  24    2007  30     10       32
  AVERAGE         44                        42      2       51

PRECIPITATION (IN)
  YESTERDAY        0.23          0.41 1999   0.09   0.14     0.00
                                      2022
  MONTH TO DATE    0.79                      2.26  -1.47     2.45
  SINCE MAR 1      4.71                      6.44  -1.73     5.53
  SINCE JAN 1      8.06                      9.94  -1.88     9.23

DEGREE DAYS
 HEATING
  YESTERDAY       21                        22     -1       14
  MONTH TO DATE  682                       801   -119      704
  SINCE MAR 1   2754                      3247   -493     1899
  SINCE JUL 1   9724                     11451  -1727     8819

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


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     W (280)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     1.5


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    97          10:00 AM
 LOWEST     74           1:00 AM
 AVERAGE    86

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


THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        75      2025
 MINIMUM TEMPERATURE (F)   30        25      2006


SUNRISE AND SUNSET
MAY 31 2026...........SUNRISE   5:40 AM MDT   SUNSET   8:59 PM MDT
JUNE  1 2026..........SUNRISE   5:40 AM MDT   SUNSET   9:00 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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