272
CXUS55 KRIW 012012
CLMBYG
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
212 PM MDT WED OCT 01 2025
...............................
..THE BUFFALO WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 100 09/04/2022
LOW 19 09/12/2014
HIGHEST 87 09/10
LOWEST 39 09/06
AVG. MAXIMUM 76.3 72.3 4.0
AVG. MINIMUM 50.0 47.3 2.7
MEAN 63.2 59.8 3.4
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 3.80 2023
MINIMUM 0.09 2021
TOTALS 0.67 1.17 -0.50 0.18
DAILY AVG. 0.02 0.04 -0.02
DAYS >= .01 4
DAYS >= .10 2
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.38 09/15 TO 09/15
STORM TOTAL 0.38
DEGREE DAYS
HEATING TOTAL 89 213 -124
SINCE 7/1 130 271 -141
COOLING TOTAL 44 57 -13
SINCE 1/1 489 525 -36
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WIND (MPH)
AVERAGE WIND SPEED 8.0
RESULTANT WIND SPEED/DIRECTION 3/310
HIGHEST WIND SPEED/DIRECTION 43/350 DATE 09/04
HIGHEST GUST SPEED/DIRECTION 57/350 DATE 09/04
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.14
NUMBER OF DAYS FAIR 27
NUMBER OF DAYS PC 3
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 44
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 6 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 2
LIGHT RAIN 7 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 2 FOG W/VIS <= 1/4 MILE 0
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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