National Weather Service United States Department of Commerce
The March 2021 climate summaries for Big Piney, Buffalo, Casper, Greybull, Lake Yellowstone, Lander, Riverton, Rock Springs, and Worland are now available online.

Big Piney




Lake Yellowstone



Rock Springs


Monthly Summaries

The month of March had a couple of intense weather events. The 13th and 14th saw a blizzard that dropped lots of snow in many places across the state. Casper received 21.2 inches on the 14th. There were also some strong winds that day, with Rock Springs getting gusts to 60 mph. There was a major wind storm on the 29th which was a post-frontal event. Wind gusts that day ranged from 39 mph at Lake Yellowstone to 74 mph in Worland and 90 mph reported at the airport in Casper. Most of the other sites had gusts in the mid to upper 60 mph range. As far as temperatures, there was a mix of below and above normal averages. The rankings did fall mainly in the warmer category, but nothing earth shattering. Precipitation was on the wet side for most, although a smattering of locations did see slightly below average liquid values for the month. Casper had their wettest and snowiest March on record. The liquid value is estimated due to some equipment issues at the airport, but the total snowfall was 50.9 inches for the month.

Check  the CLMs for more specifics on daily records set at the various locations. See the links above for details for individual sites or click here for Water Year Precipitation summaries for more locations.

If you would like additional, or more in-depth climate information, please refer to our Climate Page. From the Riverton Home Page, hover over the "Climate and Past Weather" tab, and select the "Local" option. You can then find the Daily Climate Report (CLI), the Preliminary Monthly Climate Data (CF6), the Monthly Weather Summary (CLM), and the Regional Summary (RTP). The Daily Climate Report will have the weather data for the day (from midnight to 1159 pm). The Monthly Climate Data (CF6) will have this data for each day of the month, compiling all the daily data into one form. The Regional Summary will have temperature and precipitation data for various locations across the state, updated 3 times a day.