Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 022040
CLMLND

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
240 PM MDT MON OCT 2 2018

..PRELIMINARY MONTHLY CLIMATE SUMMARY FOR HUNT FIELD IN LANDER 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 HOTTER AN MUCH DRIER THAN NORMAL FOR LANDER...

THE AVERAGE TEMPERATURE FOR LANDER IN SEPTEMBER WAS 61.8 DEGREES...
WHICH WAS 3.2 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH
WAS 90 DEGREES ON THE 15TH. THE COLDEST READING WAS 32 DEGREES ON
THE 26TH. A RECORD HIGH WAS BROKEN ON THE 10TH WHEN 88 DEGREES BROKE
THE PREVIOUS RECORD OF 87 DEGREES SET IN 2009.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.05 INCHES...WHICH WAS ONLY
5 PERCENT OF NORMAL.  THIS MADE IT THE 6TH DRIEST SEPTEMBER ON RECORD
SINCE 1946. THE WETTEST 24 HOUR PERIOD DURING THE MONTH WAS ON THE
7TH AND 8TH...WHEN 0.02 INCHES FELL EACH DAY. NO PRECIPITATION
RECORDS WERE SET DURING THE MONTH.
THE HIGHEST WIND GUST WAS 54 MPH ON THE 23TH.

...THE LANDER WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              95   09/05/2013
 LOW                7   09/22/1895
HIGHEST            90   09/15
LOWEST             32   09/26
AVG. MAXIMUM     78.2              72.8     5.4
AVG. MINIMUM     45.4              44.4     1.0
MEAN             61.8              58.6     3.2
DAYS MAX >= 90      1
DAYS MAX <= 32      0
DAYS MIN <= 32      1
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.64   1923
 MINIMUM            T   2010
                        1932
                        1914
TOTALS           0.05              1.05   -1.00
DAILY AVG.       0.00              0.04   -0.04
DAYS >= .01         3
DAYS >= .10         0
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.02   09/08 TO 09/08
                        09/07 TO 09/07

SNOWFALL (INCHES)
TOTALS            0.0               2.7    -2.7
SINCE 7/1         0.0               2.7    -2.7
SNOWDEPTH AVG.      0
DAYS >= 1.0         0

DEGREE_DAYS
HEATING TOTAL     125               219     -94
 SINCE 7/1        150               259    -109
COOLING TOTAL      39                27      12
 SINCE 1/1        514               472      42
.................................................

WIND (MPH)
AVERAGE WIND SPEED              6.5
RESULTANT WIND SPEED/DIRECTION   2/261
HIGHEST WIND SPEED/DIRECTION    40/270    DATE  09/23
HIGHEST GUST SPEED/DIRECTION    54/260    DATE  09/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.10
NUMBER OF DAYS FAIR           28
NUMBER OF DAYS PC              2
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     37

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP                0
HEAVY RAIN                0     RAIN                        1
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                      3

-  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 65 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 38 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 52
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 27. THE AVERAGE MONTHLY
PRECIPITATION IS 1.29 INCHES. THE AVERAGE MONTHLY SNOWFALL IS 9.8
INCHES.

$$



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