Climatological Report (Daily)
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721
CDUS45 KRIW 180726
CLIRKS

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

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

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 17 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         75   3:14 PM  83    2010  70      5       66
  MINIMUM         54   5:56 AM  10    1965  44     10       40
  AVERAGE         65                        57      8

PRECIPITATION (IN)
  YESTERDAY        0.02          1.29 1965   0.02   0.00     0.00
  MONTH TO DATE    0.08                      0.40  -0.32     0.13
  SINCE SEP 1      0.08                      0.40  -0.32     0.13
  SINCE JAN 1      3.13                      5.64  -2.51     3.07

DEGREE DAYS
 HEATING
  YESTERDAY        0                         8     -8       12
  MONTH TO DATE   24                        96    -72       65
  SINCE SEP 1     24                        96    -72       65
  SINCE JUL 1     38                       155   -117       83

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   21                         8     13       19
  SINCE SEP 1     21                         8     13       19
  SINCE JAN 1    558                       317    241      441
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    47   HIGHEST WIND DIRECTION     S (160)
  HIGHEST GUST SPEED    62   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED    12.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83           6:00 AM
 LOWEST     38           4:00 PM
 AVERAGE    61

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


THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   70        84      2014
 MINIMUM TEMPERATURE (F)   43         5      1965


SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE   7:00 AM MDT   SUNSET   7:20 PM MDT
SEPTEMBER 19 2026.....SUNRISE   7:01 AM MDT   SUNSET   7:18 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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