Climatological Report (Monthly) Issued by NWS
000
CXUS55 KRIW 021621
CLMGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1021 AM MDT MON OCT 02 2023
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...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 103 09/04/2022
LOW 27 09/18/2003
09/29/1999
HIGHEST 94 09/01
LOWEST 40 09/25
09/29
09/30
AVG. MAXIMUM 79.8 76.7 3.1
AVG. MINIMUM 48.2 45.1 3.1
MEAN 64.0 60.9 3.1
DAYS MAX >= 90 3
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 3.21 2019
MINIMUM 0.01 2021
TOTALS 1.58 0.83 0.75 1.16
DAILY AVG. 0.05 0.03 0.02
DAYS >= .01 7
DAYS >= .10 3
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.86 09/04 TO 09/04
STORM TOTAL 0.86
DEGREE DAYS
HEATING TOTAL 69 169 -100
SINCE 7/1 74 189 -115
COOLING TOTAL 50 46 4
SINCE 1/1 702 742 -40
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WIND (MPH)
AVERAGE WIND SPEED 5.6
RESULTANT WIND SPEED/DIRECTION 1/320
HIGHEST WIND SPEED/DIRECTION 36/300 DATE 09/18
HIGHEST GUST SPEED/DIRECTION 50/300 DATE 09/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.16
NUMBER OF DAYS FAIR 27
NUMBER OF DAYS PC 2
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 53
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 4
LIGHT RAIN 12 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 7 FOG W/VIS <= 1/4 MILE 1
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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