September 2013 Monthly Climate Summaries for Western and Central Wyoming

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

Overall, September was warmer and much wetter than normal. All locations had above normal temperatures and well above normal precipitation. Some locations, such as, Riverton, Worland, Buffalo, Greybull, and Lake Yellowstone had the wettest Septembers on record. Many locations set a few high temperature records throughout the month, and many new precipitation records were also set this month. An early season snow storm also brought record snowfall to Riverton and Casper. 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


Early season snow storm brings trees down in Riverton, Friday September 27th, 2013. Photo courtesy County 10

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