Climatological Report (Monthly) Issued by NWS Riverton, WY
000
CXUS55 KRIW 020003
CLMRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
533 PM MDT MON MAY 01 2023
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON FOR THE MONTH OF
APRIL 2023...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 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
...RIVERTON WAS MUCH COLDER AND WETTER THAN NORMAL IN APRIL...
THE AVERAGE TEMPERATURE FOR RIVERTON IN APRIL WAS 38 DEGREES WHICH
WAS 5.5 DEGREES BELOW NORMAL. IT WAS THE COLDEST APRIL SINCE RECORDS
STARTED IN 1996. THE WARMEST READING FOR THE MONTH WAS 73 DEGREES ON
THE 30TH. THE COLDEST TEMPERATURE WAS 5 DEGREES ON THE 7TH WHICH
BROKE THE 1997 RECORD OF 17 DEGREES BELOW ZERO. THE 5TH HIT 8
DEGREES WHICH BROKE THE 1999 RECORD OF 16. THE 6TH LOW OF 8 BROKE
THE 1997 RECORD OF 16.
PRECIPITATION FOR THE MONTH WAS 1.7 INCHES...WHICH IS 142 PERCENT OF
NORMAL. THE WETTEST 24-HOUR PERIOD OCCURRED ON THE 3RD-4TH WITH 0.8
INCHES. THE 3RD HAD 0.45 INCHES WHICH BROKE 0.03 FROM 1996 AND THE
4TH HAD 0.53 INCHES WHICH BROKE 0.35 FROM 2017.
SNOWFALL FOR THE MONTH WAS 15.7 INCHES. THE SNOWIEST DAY WAS ON THE
4TH WITH 6 INCHES. THIS BROKE THE 1996 RECORD OF 2.3 INCHES. THE 3RD
HAD 3.5 INCHES WHICH BROKE THE 2017 RECORD OF 0.6 INCHES. THE
HIGHEST WIND GUST OCCURRED ON THE 27TH WITH 62 MPH FROM THE
NORTHEAST.
...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2023
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 73 04/30
LOWEST 5 04/07
AVG. MAXIMUM 51.0 56.8 -5.8
AVG. MINIMUM 25.0 30.1 -5.1
MEAN 38.0 43.5 -5.5
DAYS MAX >= 90 0
DAYS MAX <= 32 4
DAYS MIN <= 32 23
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 3.31 2016
MINIMUM 0.10 2007
TOTALS 1.70 1.20 0.50 1.27
DAILY AVG. 0.06 0.04 0.02
DAYS >= .01 9
DAYS >= .10 5
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.80 04/03 TO 04/04
STORM TOTAL 0.53
SNOWFALL (INCHES)
TOTALS 15.7 MM MM
SINCE 7/1 87.1 MM MM
SNOWDEPTH AVG. 5
DAYS >= 1.0 5
DEGREE DAYS
HEATING TOTAL 805 647 158
SINCE 7/1 8827 7435 1392
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 9.2
RESULTANT WIND SPEED/DIRECTION 2/300
HIGHEST WIND SPEED/DIRECTION 45/010 DATE 04/27
HIGHEST GUST SPEED/DIRECTION 62/010 DATE 04/27
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.25
NUMBER OF DAYS FAIR 23
NUMBER OF DAYS PC 3
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 59
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 3 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 2 SNOW 5
LIGHT SNOW 9 SLEET 0
FOG 10 FOG W/VIS <= 1/4 MILE 5
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO MAY 2023...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.
$$