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.

$$