416
CXUS55 KRIW 012020
CLMBYG
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
212 PM MDT WED OCT 01 2025
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR BUFFALO FOR THE MONTH OF
SEPTEMBER 2025...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF SEPTEMBER 2025 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
..BUFFALO WAS DRIER AND WARMER THAN NORMAL IN SEPTEMBER
THE AVERAGE TEMPERATURE FOR BUFFALO IN SEPTEMBER WAS 63.2 DEGREES
WHICH IS 3.4 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE MONTH
WAS 87 DEGREES ON THE 10TH. THE COLDEST TEMPERATURE WAS 39 DEGREES
ON THE 6TH AND BROKE THE 2010 RECORD OF 40 DEGREES.
PRECIPITATION FOR THE MONTH WAS 0.67 INCHES...WHICH IS 57 PERCENT OF
NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 15TH WITH 0.38 INCHES.
NO PRECIPITATION RECORDS WERE BROKEN THIS MONTH. THE HIGHEST WIND
GUST WAS 57 MPH OCCURRING ON THE 4TH FROM THE NORTHWEST.
..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.
LOOKING AHEAD TO OCTOBER 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 64 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 41 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 52
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 30. THE AVERAGE MONTHLY
PRECIPITATION IS 1.01 INCHES.
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