Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 011923
CLMCPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1215 PM MST THU FEB 1 2018

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR THE NATRONA COUNTY
INTERNATIONAL AIRPORT NEAR CASPER FOR THE MONTH OF JANUARY 2018...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 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

...JANUARY WAS WARMER AND WETTER THAN NORMAL FOR CASPER...

THE AVERAGE TEMPERATURE FOR CASPER IN JANUARY WAS 27.6 DEGREES.
THIS WAS 2.9 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH
WAS 51 DEGREES ON THE 18TH...AND THE COLDEST READING WAS -19 DEGREES
ON THE 1ST.

TOTAL PRECIPITATION FOR THE MONTH WAS 0.68 INCHES...WHICH WAS 133
PERCENT OF NORMAL. THE WETTEST 24 HOUR PERIOD OF THE MONTH WAS ON
THE 20TH...WHEN 0.53 INCHES OF PRECIPITATION FELL...WHICH ALSO BROKE
THE PREVIOUS RECORD OF 0.23 INCHES SET BACK IN 1962. SNOWFALL FOR
JANUARY WAS 12.3 INCHES...WHICH IS 3.2 INCHES ABOVE NORMAL...OR 137
PERCENT OF NORMAL. THE MOST SNOW FELL ON THE 20TH WHEN 8.1 INCHES
FELL...WHICH ALSO BROKE THE RECORD FOR THE DATE...THE OLD BEING 4.2
INCHES IN 1962. THE HIGHEST WIND GUST WAS 54 MPH ON THE 25TH.

...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              60   01/31/1971
                        01/30/1971
 LOW              -40   01/14/1972
                        01/13/1972
                        01/24/1949
HIGHEST            51   01/18
LOWEST            -19   01/01
AVG. MAXIMUM     37.5              35.2     2.3
AVG. MINIMUM     17.8              14.3     3.5
MEAN             27.6              24.7     2.9
DAYS MAX >= 90      0
DAYS MAX <= 32      7
DAYS MIN <= 32     28
DAYS MIN <= 0       4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         1.42   1987
 MINIMUM         0.03   2004
TOTALS           0.68              0.51    0.17
DAILY AVG.       0.02              0.02    0.00
DAYS >= .01         5
DAYS >= .10         2
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.53   01/20 TO 01/20

SNOWFALL (INCHES)
TOTALS           12.3               9.1     3.2
SINCE 7/1        40.9              39.6     1.3
DAYS >= 1.0         2

DEGREE_DAYS
HEATING TOTAL    1150              1248     -98
 SINCE 7/1       4204              4377    -173
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
.................................................

WIND (MPH)
AVERAGE WIND SPEED              15.6
RESULTANT WIND SPEED/DIRECTION  12/229
HIGHEST WIND SPEED/DIRECTION    44/220    DATE  01/25
HIGHEST GUST SPEED/DIRECTION    54/220    DATE  01/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                9     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      1
HAZE                      4

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

LOOKING AHEAD TO FEBRUARY 2018...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 35 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 14 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 42
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 18. THE AVERAGE MONTHLY
PRECIPITATION IS 0.57 INCHES. THE AVERAGE SNOWFALL IS 9.8 INCHES.


$$


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