853
CXUS55 KRIW 011705
CLMBPI

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

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

...THE BIG PINEY  WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1976 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             91   09/05/2020
 LOW               9   09/27/1996
                       09/21/1983
HIGHEST           82   09/13
LOWEST            25   09/15
AVG. MAXIMUM    71.5               69.7     1.8
AVG. MINIMUM    36.8               31.8     5.0
MEAN            54.2               50.8     3.4
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32     5
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.17   1982
 MINIMUM           T   2018
TOTALS          1.23               0.64    0.59     0.51
DAILY AVG.      0.04               0.02    0.02
DAYS >= .01        7
DAYS >= .10        5
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.40   09/18 TO 09/18
 STORM TOTAL    0.40

DEGREE DAYS
HEATING TOTAL    318                428    -110
 SINCE 7/1       435                705    -270
COOLING TOTAL      0                  0       0
 SINCE 1/1       163                 30     133
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
RESULTANT WIND SPEED/DIRECTION   2/300
HIGHEST WIND SPEED/DIRECTION    36/260    DATE  09/13
HIGHEST GUST SPEED/DIRECTION    51/260    DATE  09/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.21
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       4
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     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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