National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS55 KRIW 021631
CLMBPI

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1021 AM MDT MON OCT 02 2023

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR BIG PINEY FOR THE MONTH
OF SEPTEMBER 2023...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF SEPTEMBER 2023 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

...BIG PINEY WAS WARMER AND WETTER THAN NORMAL IN SEPTEMBER...

THE AVERAGE TEMPERATURE FOR BIG PINEY IN SEPTEMBER WAS 52.4 DEGREES
WHICH WAS 1.6 DEGREES ABOVE NORMAL THE WARMEST READING FOR THE MONTH
WAS 79 DEGREES ON THE 1ST AND 9TH. THE COLDEST TEMPERATURE WAS 24
DEGREES ON THE 24TH. NO TEMPERATURE RECORDS WERE BROKEN.

PRECIPITATION FOR THE MONTH WAS 1.31 INCHES...WHICH IS 205 PERCENT
OF NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 3RD-4TH WITH 0.75
INCHES. THE 3RD HAD 0.51 INCHES AND BROKE THE 1987 RECORD OF 0.37.
THE HIGHEST WIND GUST WAS 46 MPH FROM THE SOUTHEAST ON THE 31ST.

...THE BIG PINEY WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER
2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1976 TO 2023

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           79   09/01
                       09/09
LOWEST            24   09/24
AVG. MAXIMUM    70.4               69.7     0.7
AVG. MINIMUM    34.4               31.8     2.6
MEAN            52.4               50.8     1.6
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32    12
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.17   1982
 MINIMUM           T   2018
TOTALS          1.31               0.64    0.67     1.60
DAILY AVG.      0.04               0.02    0.02
DAYS >= .01        9
DAYS >= .10        4
DAYS >= .50        1
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.75   09/03 TO 09/04
 STORM TOTAL    0.51

DEGREE DAYS
HEATING TOTAL    372                428     -56
 SINCE 7/1       544                705    -161
COOLING TOTAL      0                  0       0
 SINCE 1/1        47                 30      17
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.9
RESULTANT WIND SPEED/DIRECTION   1/310
HIGHEST WIND SPEED/DIRECTION    33/270    DATE  09/21
HIGHEST GUST SPEED/DIRECTION    46/160    DATE  09/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.27
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       5
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

LOOKING AHEAD TO OCTOBER 2023...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 63 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 27 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 48
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 16 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.62 INCHES.

$$