Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 012158
CLMBPI

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
358 PM MDT MON OCT 1 2018

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE MILEY MEMORIAL FIELD
NEAR BIG PINEY FOR THE MONTH OF SEPTEMBER 2018...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF SEPTEMBER 2018 WILL BE
AVAILABLE APPROXIMATELY IN 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

...SEPTEMBER WAS WARMER AND MUCH DRIER THAN AVERAGE FOR BIG PINEY...

THE AVERAGE TEMPERATURE FOR BIG PINEY IN SEPTEMBER WAS 53.1 DEGREES,
WHICH WAS 3.3 DEGREES ABOVE NORMAL. THIS MADE IT THE 7TH WARMEST
SEPTEMBER ON RECORD. THE WARMEST READING FOR THE MONTH WAS 82
DEGREES ON THE 6TH, 10TH, 11TH, AND 15TH. THE COLDEST DAY WAS THE
25TH AT JUST 17 DEGREES. A RECORD HIGH OF 82 DEGREES ON THE 10TH
BREAKS THE 2009 RECORD OF 81. THE 11TH HAD A HIGH OF 81 DEGREES
WHICH TIED THE RECORD PREVIOUSLY SET IN 2017.

BIG PINEY HAD A PRECIPITATION TOTAL OF A TRACE. THIS IS 0 PERCENT OF
THE NORMAL OF 0.78 INCHES. THIS MADE IT THE DRIEST SEPTEMBER ON
RECORD SINCE OFFICIAL RECORDS BEGAN IN 1998. THE WETTEST DAYS, THE
ONLY DAYS THAT RECEIVED A TRACE OF RAIN DURING THE MONTH, WERE ON
THE 7TH, 8TH, 18TH, AND 30TH.
THE HIGHEST WIND GUST WAS 43 MPH ON THE 23RD.

...THE BIG PINEY  WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER
2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1976 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              89   09/03/2017
 LOW                9   09/27/1996
                        09/21/1983
HIGHEST            82   09/15
                        09/11
                        09/10
LOWEST             17   09/25
AVG. MAXIMUM     76.0              68.1     7.9
AVG. MINIMUM     30.2              31.4    -1.2
MEAN             53.1              49.8     3.3
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32     22
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.17   1982
 MINIMUM         0.04   2010
                        2009
TOTALS              TR             0.78   -0.78
DAILY AVG.          T
DAYS >= .01         0
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL       T   09/30 TO 09/30
                        08/31 TO 09/01
                        09/01 TO 09/01

DEGREE_DAYS
HEATING TOTAL     350               458    -108
 SINCE 7/1        551               751    -200
COOLING TOTAL       0                 0       0
 SINCE 1/1         57                35      22
.................................................

WIND (MPH)
AVERAGE WIND SPEED              8.2
HIGHEST WIND SPEED/DIRECTION    35/280    DATE  09/23
HIGHEST GUST SPEED/DIRECTION    43/280    DATE  09/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           30
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     34

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

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

LOOKING AHEAD TO OCTOBER 2018...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 62 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 26 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 48
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 16. THE AVERAGE MONTHLY
PRECIPITATION IS 0.53 INCHES.

$$


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