779
CXUS55 KRIW 031843
CLMGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1229 PM MDT MON AUG 03 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR GREYBULL FOR THE MONTH OF
JULY 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JULY 2026 WILL BE
AVAILABLE IN APPROXIMATELY 60 DAYS FROM THE NATIONAL CENTERS FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-
WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE
INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW
..GREYBULL IN JULY WAS WETTER AND WARMER THAN NORMAL.
THE AVERAGE TEMPERATURE FOR GREYBULL IN JULY WAS 79.7 DEGREES WHICH
IS 4.8 DEGREES ABOVE NORMAL. IT WAS THE SECOND WARMEST JULY ON
RECORD. THE ESTIMATED WARMEST TEMPERATURE FOR THE MONTH IS 105
DEGREES ON THE 11TH. THIS BROKE THE 2024 RECORD OF 103. THE 25TH
HIGH OF 104 BROKE THE 2021 RECORD OF 102. THE COLDEST TEMPERATURE
WAS 50 DEGREES ON THE 1ST AND TIED 2017 AND 2020. DATA FOR THE 12TH
IS MISSING DUE TO EQUIPMENT ISSUES...HOWEVER IT MAY HAVE BEEN HOTTER
THAN 105.
PRECIPITATION FOR THE MONTH WAS 0.33 INCHES...WHICH IS 206 PERCENT
OF NORMAL. THE WETTEST 24-HOUR PERIOD HAD 0.13 INCHES ON THE 7TH AND
BROKE A TRACE FROM 2012, 2021 AND 2022. THE HIGHEST WIND GUST WAS 63
MPH. IT OCCURRED ON THE 19TH FROM THE NORTHWEST.
..THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF JULY 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 108 07/14/2002
LOW 44 07/07/2010
07/12/2008
HIGHEST 105 07/11
LOWEST 50 07/01
AVG. MAXIMUM 96.5 91.4 5.1
AVG. MINIMUM 62.9 58.3 4.6
MEAN 79.7 74.9 4.8
DAYS MAX >= 90 28
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 1.09 2024
MINIMUM 0.00 2011
TOTALS 0.33 0.16 0.17 0.86
DAILY AVG. 0.01 0.01 0.00
DAYS >= .01 6
DAYS >= .10 1
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.13 07/07 TO 07/07
STORM TOTAL 0.13
DEGREE DAYS
HEATING TOTAL 0 4 -4
SINCE 7/1 0 0 0
COOLING TOTAL 430 309 121
SINCE 1/1 546 455 91
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 6.7
RESULTANT WIND SPEED/DIRECTION 2/320
HIGHEST WIND SPEED/DIRECTION 47/310 DATE 07/19
HIGHEST GUST SPEED/DIRECTION 63/290 DATE 07/19
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.04
NUMBER OF DAYS FAIR 18
NUMBER OF DAYS PC 0
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 41
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 0
LIGHT RAIN 15 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 0 FOG W/VIS <= 1/4 MILE 0
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO AUGUST 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 92 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 59 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 84
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 51 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.23 INCHES.
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