Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS55 KRIW 021635 CLMCPR CLIMATE REPORT NATIONAL WEATHER SERVICE RIVERTON WY 1021 AM MDT MON OCT 02 2023 ...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER FOR THE MONTH OF SEPTEMBER 2023... ...OFFICIAL CLIMATE DATA FOR THE MONTH OF SEPTEMBER 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 ...SEPTEMBER WAS DRIER AND WARMER THAN NORMAL FOR CASPER... THE AVERAGE TEMPERATURE FOR CASPER IN SEPTEMBER WAS 61.2 DEGREES WHICH WAS 2.3 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE MONTH WAS 91 DEGREES ON THE 1ST. THE COLDEST TEMPERATURE WAS 33 DEGREES ON THE 26TH. NO TEMPERATURE RECORDS WERE BROKEN. PRECIPITATION FOR THE MONTH WAS 0.59 INCHES...WHICH IS 62 PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 14TH WHEN 0.23 INCHES FELL. NO PRECIPITATION RECORDS WERE BROKEN. THE HIGHEST WIND GUST WAS 56 MPH FROM THE SOUTHWEST ON THE 4TH. ...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1939 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 100 09/04/2022 LOW 15 09/28/1945 HIGHEST 91 09/01 LOWEST 33 09/26 AVG. MAXIMUM 78.9 75.6 3.3 AVG. MINIMUM 43.5 42.2 1.3 MEAN 61.2 58.9 2.3 DAYS MAX >= 90 1 DAYS MAX <= 32 0 DAYS MIN <= 32 0 DAYS MIN <= 0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 3.40 1982 MINIMUM 0.07 1956 TOTALS 0.59 0.95 -0.36 0.81 DAILY AVG. 0.02 0.03 -0.01 DAYS >= .01 7 DAYS >= .10 2 DAYS >= .50 0 DAYS >= 1.00 0 GREATEST 24 HR. TOTAL 0.23 09/14 TO 09/14 STORM TOTAL 0.23 SNOWFALL (INCHES) TOTALS 0.0 1.5 -1.5 SINCE 7/1 0.0 1.5 -1.5 SNOWDEPTH AVG. 0 DAYS >= 1.0 0 DEGREE DAYS HEATING TOTAL 127 214 -87 SINCE 7/1 180 258 -78 COOLING TOTAL 20 30 -10 SINCE 1/1 342 442 -100 .............................................................. WIND (MPH) AVERAGE WIND SPEED 9.4 RESULTANT WIND SPEED/DIRECTION 4/240 HIGHEST WIND SPEED/DIRECTION 40/230 DATE 09/04 HIGHEST GUST SPEED/DIRECTION 56/230 DATE 09/04 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.18 NUMBER OF DAYS FAIR 24 NUMBER OF DAYS PC 6 NUMBER OF DAYS CLOUDY 0 AVERAGE RH (PERCENT) 52 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 6 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 3 LIGHT RAIN 10 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 6 FOG W/VIS <= 1/4 MILE 1 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 2023...THE AVERAGE HIGH TEMPERATURE ON THE FIRST OF THE MONTH IS 67 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 36 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 53 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 26. THE AVERAGE MONTHLY PRECIPITATION IS 1.19 INCHES. THE AVERAGE MONTHLY SNOWFALL IS 7 INCHES. $$