983
CXUS55 KRIW 011705
CLMBYG

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1105 AM MDT THU OCT 01 2026

...................................

...THE BUFFALO WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026

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           93   09/04
LOWEST            41   09/15
AVG. MAXIMUM    76.1               72.3     3.8
AVG. MINIMUM    50.4               47.3     3.1
MEAN            63.3               59.8     3.5
DAYS MAX >= 90     1
DAYS MAX <= 32     0
DAYS MIN <= 32     0
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.80   2023
 MINIMUM        0.09   2021
TOTALS          1.11               1.17   -0.06     0.67
DAILY AVG.      0.04               0.04    0.00
DAYS >= .01        5
DAYS >= .10        3
DAYS >= .50        1
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.66   09/18 TO 09/19
 STORM TOTAL    0.54

DEGREE DAYS
HEATING TOTAL     98                213    -115
 SINCE 7/1       116                271    -155
COOLING TOTAL     54                 57      -3
 SINCE 1/1       676                525     151
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
RESULTANT WIND SPEED/DIRECTION   2/240
HIGHEST WIND SPEED/DIRECTION    44/180    DATE  09/18
HIGHEST GUST SPEED/DIRECTION    58/180    DATE  09/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.17
NUMBER OF DAYS FAIR           27
NUMBER OF DAYS PC              2
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     49

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       4     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$