Climatological Report (Daily)
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461
CDUS45 KRIW 210732
CLIRKS

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT MON SEP 21 2026

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

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 20 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         64   4:43 PM  81    1966  69     -5       72
  MINIMUM         36   6:52 AM  19    1965  42     -6       54
  AVERAGE         50                        56     -6

PRECIPITATION (IN)
  YESTERDAY        0.00          0.19 1989   0.03  -0.03     0.01
  MONTH TO DATE    0.29                      0.49  -0.20     0.14
  SINCE SEP 1      0.29                      0.49  -0.20     0.14
  SINCE JAN 1      3.34                      5.73  -2.39     3.08

DEGREE DAYS
 HEATING
  YESTERDAY       15                        10      5        2
  MONTH TO DATE   57                       124    -67       81
  SINCE SEP 1     57                       124    -67       81
  SINCE JUL 1     71                       183   -112       99

 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    16   HIGHEST WIND DIRECTION    SW (230)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED     8.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           7:00 AM
 LOWEST     31           4:00 PM
 AVERAGE    66

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


THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   68        82      1967
 MINIMUM TEMPERATURE (F)   42        22      1995


SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE   7:03 AM MDT   SUNSET   7:15 PM MDT
SEPTEMBER 22 2026.....SUNRISE   7:04 AM MDT   SUNSET   7:13 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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