029
CXUS55 KRIW 021628
CLMRIW

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1013 AM MDT FRI MAY 02 2025

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON FOR THE MONTH OF
APRIL 2025...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2025 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

...RIVERTON WAS SLIGHTLY COOLER AND DRIER THAN NORMAL IN APRIL...

THE AVERAGE TEMPERATURE FOR RIVERTON IN APRIL WAS 43 DEGREES WHICH
WAS 0.5 DEGREES BELOW NORMAL. THE WARMEST READING FOR THE MONTH WAS
78 DEGREES ON THE 11TH. THE HIGH ON THE 12TH OF 75 BROKE THE 2024
RECORD OF 73. THE COLDEST READING WAS 16 DEGREES ON THE 19TH.

PRECIPITATION FOR THE MONTH WAS 1.16  INCHES...WHICH IS 97 PERCENT
OF NORMAL. THE WETTEST 24-HOURS WAS THE 17TH-18TH WHEN 0.26 INCHES
FELL. THE 17TH HAD 0.25 INCHES AND BROKE THE 2018 RECORD OF 0.16.

SNOWFALL FOR THE MONTH WAS 4 INCHES. THE SNOWIEST DAY WAS THE 17TH-
18TH WITH 2.3 INCHES. NO SNOWFALL RECORDS WERE BROKEN THIS MONTH.
THE HIGHEST WIND GUST WAS 48 MPH FROM THE NORTHWEST AND OCCURRED ON
THE 9TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             85   04/24/2012
 LOW               2   04/03/2020
HIGHEST           78   04/11
LOWEST            16   04/19
AVG. MAXIMUM    56.7               56.8    -0.1
AVG. MINIMUM    29.3               30.1    -0.8
MEAN            43.0               43.5    -0.5
DAYS MAX >= 90     0
DAYS MAX <= 32     1
DAYS MIN <= 32    18
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.31   2016
 MINIMUM        0.10   2007
TOTALS          1.16               1.20   -0.04     0.44
DAILY AVG.      0.04               0.04    0.00
DAYS >= .01       10
DAYS >= .10        5
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.26   04/17 TO 04/18
 STORM TOTAL    0.25

SNOWFALL (INCHES)
TOTALS           4.0                 MM      MM
SINCE 7/1       29.8                 MM      MM
SNOWDEPTH AVG.     0
DAYS >= 1.0        1

DEGREE DAYS
HEATING TOTAL    650                647       3
 SINCE 7/1      6837               7435    -598
COOLING TOTAL      0                  0       0
 SINCE 1/1         0                  0       0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.8
RESULTANT WIND SPEED/DIRECTION   3/330
HIGHEST WIND SPEED/DIRECTION    36/300    DATE  04/09
HIGHEST GUST SPEED/DIRECTION    48/300    DATE  04/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                5     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      4
HAZE                      1

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

LOOKING AHEAD TO MAY 2025. THE AVERAGE HIGH TEMPERATURE ON THE FIRST
OF THE MONTH IS 61 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 34
DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 73 DEGREES AND
THE AVERAGE LOW TEMPERATURE IS 44. THE AVERAGE MONTHLY PRECIPITATION
IS 1.92 INCHES.

$$