National Weather Service United States Department of Commerce

October 2018 Climate Summary for Eastern Utah and Western Colorado

*Please note that all data mentioned is collected from our automated observing stations from 10 different airports across eastern Utah and western Colorado. Some of our cooperative observers in more remote areas may have measured warmer or colder temperatures, or more or less precipitation than what was mentioned in this summary.* 

October 2018 finally saw the return of cooler and wetter conditions across eastern Utah and western Colorado as numerous Pacific disturbances dropped into the region from the northwest. The first few days of the month, however, saw the remnants of Hurricane Rosa move into the Four Corners which produced numerous showers and thunderstorms. Another disturbance was hot on Rosa’s heels and dropped between 0.50 and 1.00 inches of rain in 24 hours for several areas, as well as the first snowfall of the season on the Grand Mesa. A few other cold disturbances dropped into the region which saw an average of 3 to 6 inches for several of the higher elevations with each system. A drastically cooler airmass accompanied one such system which resulted in a widespread season ending freeze on October 15th as low temperatures dropped into the upper teens to upper 20s for the lower elevations. The unsettled weather continued throughout the month resulting in valley rain and high elevation snow.

 

Given the numerous systems moving into the region, October ended up being wetter than normal. 9 out of the 10 automated stations across eastern Utah and western Colorado ended the month with above normal precipitation. The most recorded precipitation occurred at the Meeker Airport where 3.13 inches fell, which was 1.27 inches above normal. The greatest deficit was reported at the Vernal Airport where 1.35 inches fell, only 0.04 inches below normal for October. Extended periods of clouds and showers meant October was mostly cooler than normal across the area as mean temperatures ranged from 0 to -2 degrees below normal, though a few areas were up to 1 degree above normal for the month. The warmest temperature for the month of 80 degrees was recorded at the Vernal Airport on October 1st, while the coldest temperature of 13 degrees was reported at the Aspen, Craig and Meeker Airports at various times throughout the month.

 

Grand Junction had an average monthly temperature of 51.3 degrees which was 1.7 degrees below normal. The highest temperature was 79 degrees on October 3rd and the lowest was 27 on the 15th. 2.76 inches of precipitation fell throughout the month which was 1.70 inches above normal. A trace of snow, in the form of hail, fell which was 0.4 inches below normal.


Taking a quick look ahead to November, the official forecast from the Climate Prediction Center (http://www.cpc.ncep.noaa.gov/products/predictions/30day/) shows odds favoring warmer temperatures continuing across E UT/W CO with wetter than normal conditions across portions of SW CO.

For more climate information from other sites, please visit our climate page on our website at http://w2.weather.gov/climate/index.php?wfo=gjt (select the NOWDATA tab for even more sites). You can also follow us on Facebook (@NWSGrandJunction) or Twitter (@NWSGJT).