005
CXUS55 KRIW 012029
CLMWRL
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
212 PM MDT WED OCT 01 2025
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR WORLAND MUNICIPAL AIRPORT
FOR THE MONTH OF SEPTEMBER 2025...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF SEPTEMBER 2025 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
..WORLAND WAS WARMER AND DRIER THAN NORMAL IN SEPTEMBER
AVERAGE TEMPERATURE FOR WORLAND IN SEPTEMBER WAS 62.9 DEGREES WHICH
IS 3.6 DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH WAS 91
DEGREES ON THE 2ND. THE COLDEST READING FOR THE MONTH WAS 37 DEGREES
ON THE 6TH AND BROKE THE 1969 RECORD OF 39.
TOTAL PRECIPITATION FOR THE MONTH WAS 0.45 INCHES...WHICH IS 48
PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS
ON THE 22ND WITH 0.24 INCHES. NO PRECIPITATION RECORDS WERE SET THIS
MONTH. THE HIGHEST WIND GUST WAS 45 MPH FROM THE NORTHWEST ON THE
15TH.
..THE WORLAND WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1947 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 102 09/04/2022
LOW 15 09/25/1984
HIGHEST 91 09/02
LOWEST 37 09/06
AVG. MAXIMUM 80.6 76.2 4.4
AVG. MINIMUM 45.2 42.4 2.8
MEAN 62.9 59.3 3.6
DAYS MAX >= 90 2
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.63 2013
MINIMUM T 2012
TOTALS 0.45 0.93 -0.48 0.23
DAILY AVG. 0.02 0.03 -0.01
DAYS >= .01 4
DAYS >= .10 2
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.24 09/22 TO 09/22
STORM TOTAL 0.24
DEGREE DAYS
HEATING TOTAL 85 202 -117
SINCE 7/1 91 240 -149
COOLING TOTAL 27 31 -4
SINCE 1/1 561 528 33
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 5.3
RESULTANT WIND SPEED/DIRECTION 0/180
HIGHEST WIND SPEED/DIRECTION 29/330 DATE 09/04
HIGHEST GUST SPEED/DIRECTION 45/340 DATE 09/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.11
NUMBER OF DAYS FAIR 26
NUMBER OF DAYS PC 4
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 49
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 1
LIGHT RAIN 6 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 1 FOG W/VIS <= 1/4 MILE 0
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 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 68 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 37 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 53
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 23 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.77 INCHES.
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