


Climatological Report (Monthly)
Issued by NWS
Issued by NWS
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 .............................................................. 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 .............................................................. 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. $$