December 2013 Monthly Climate Summaries for Western and Central Wyoming

The December 2013 climate summaries for Big Piney, Buffalo, Casper, Greybull, Lake Yellowstone, Lander, Riverton, Rock Springs, and Worland are now available online.

December was marked by a very cold beginning, with several locations setting new temperature records through the first week of the month. Overall, December was colder and drier than normal. Most locations had below normal temperatures and below normal precipitation. Casper emerged as the wettest location, tying 1978 as the 3rd wettest December on record. All of the  locations had record temperatures from the 3rd through the 9th,due to an outbreak of arctic air that engulfed much of the state.   See the links below for details!

If you would like additional/more in-depth climate information, please refer to our Climate Page. Under the Observed Weather tab, you can find the Daily Climate Report (CLI), the Preliminary Monthly Climate Data (CF6), the Monthly Weather Summary (CLM), the Regional and State Summary (RTP/STP). The Daily Climate Report will have the weather data for the day (from midnight to 1159 pm). The Monthly Climate Data will have this data for each day of the month, compilying all the daily data into one form. The Regional and State Summaries will have temperature and precipitation data for various locations across the state, updated 4 times a day.


Big Piney




Lake Yellowstone



Rock Springs


A sun dog captured at sunset on December 4th near Afton. Picture courtesy of Dave Hunt. 

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