Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 111905
CLMLND

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1252 PM MDT SUN JUN 11 2023

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LANDER FOR THE MONTH OF
MAY 2023...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 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

...LANDER WAS WARMER AND MUCH DRIER THAN NORMAL IN MAY....

THE AVERAGE TEMPERATURE FOR LANDER IN MAY WAS 56.9 DEGREES WHICH WAS
4.1 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE MONTH WAS 80
DEGREES ON THE 22ND. THE COLDEST TEMPERATURE WAS 33 DEGREES ON THE
8TH AND 9TH. NO TEMPERATURE READINGS WERE BROKEN THIS MONTH.

PRECIPITATION FOR THE MONTH WAS 0.86 INCHES...WHICH IS 32 PERCENT OF
NORMAL. THE WETTEST 24-HOUR PERIOD WAS THE 13TH-14TH WHEN 0.43
INCHES OF PRECIPITATION FELL. NO PRECIPITATION RECORDS WERE BROKEN.
THE HIGHEST WIND GUST OCCURRED ON THE 4TH WITH 58 MPH FROM THE
SOUTHWEST.

...THE LANDER WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1891 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             93   05/29/2003
 LOW              13   05/02/1903
HIGHEST           80   05/22
LOWEST            33   05/08
                       05/09
AVG. MAXIMUM    69.5               66.1     3.4
AVG. MINIMUM    44.2               39.4     4.8
MEAN            56.9               52.8     4.1
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32     0
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.77   2011
 MINIMUM        0.06   2020
TOTALS          0.86               2.68   -1.82     4.13
DAILY AVG.      0.03               0.09   -0.06
DAYS >= .01       11
DAYS >= .10        2
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.43   05/13 TO 05/14
 STORM TOTAL    0.40

SNOWFALL (INCHES)
TOTALS           0.0                4.5    -4.5
SINCE 7/1      107.0               87.5    19.5
SNOWDEPTH AVG.     0
DAYS >= 1.0        0

DEGREE DAYS
HEATING TOTAL    243                385    -142
 SINCE 7/1      8605               7588    1017
COOLING TOTAL      0                  5      -5
 SINCE 1/1         0                  5      -5
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.7
RESULTANT WIND SPEED/DIRECTION   2/240
HIGHEST WIND SPEED/DIRECTION    43/200    DATE  05/04
HIGHEST GUST SPEED/DIRECTION    58/210    DATE  05/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.32
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     54

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               17     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      0
HAZE                      2

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

LOOKING AHEAD TO JUNE 2023...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 72 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 44 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 84
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 52. THE AVERAGE MONTHLY
PRECIPITATION IS 1.08 INCHES. THE AVERAGE MONTHLY SNOWFALL IS 0.10
INCHES.

$$


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