Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >
| The June 2021 climate summaries for Big Piney, Buffalo, Casper, Greybull, Lake Yellowstone, Lander, Riverton, Rock Springs, and Worland are now available online. |
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The month of June started off fairly normal. There was a hot streak around the 7th for some record breaking days. A cold front passed on the 10th-11th for the coldest day of the month, and the highest wind gusts. The big story is the heat wave from the 13th -18th with temperatures climbing into the triple digits. Bighorn Basin was the hottest area, although the Wind River Basin also had several record breaking temperatures. Greybull had the highest temperature at 108 degrees on the 15th. Worland came in at 106 that day. Luckily a cold front moved through on the 20th and brought temps back down to the 70s, much more normal. It also brought some much needed rain to a few areas across the state. A second heat wave hit on the 22nd-23rd with more daily high temperature records being broken. The month ended with several sites seeing the warmest June on record. Rock Springs beat the 1988 record for hottest June, with records since 1948. Riverton Town and Lander both had their second warmest June since 1988, however with records since 1907 and 1946, this is pretty impressive. Precipitation was on the low side in June, with only Casper seeing above normal rainfall amounts. The wettest day fell after the second heat wave, around the 24th and 25th of the month with a nice front and lots of showers and thunderstorms. Casper had 1.09 inches of rain that day. Greybull and Lake Yellowstone both had a record dry June, since records started in 1998. Worland and Buffalo had their second driest June. Worland has records since 1960, and came in just shy of the 2012 driest record June. 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. |
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