Jena Doak, [email protected]
SWEETWATER COUNTY, SEPTEMBER 20, 2021 — Autumn in Wyoming is beautiful. However, tonight will be an exception.
Some parts of the Cowboy State are expected to dip into the low 20’s, but Rock Springs and Green River will not be so bad. Our area may drop a couple of degrees below freezing.
From the National Weather Service, Riverton, Facebook page: Sub-freezing temperatures across a wide area of central and southwest Wyoming tonight. Cold spots around Yellowstone NP and the Bondurant Valley fall to the upper teens and lower 20s. While the Riverton, Lander, and Rock Springs airports may not drop below 32, there is a good chance temperatures in town will.
According to Warning Coordination Meteorologist at the NWS office in Riverton, Chris Jones, temperatures will start to drop once skies clear up tonight.
“When that happens, we get good radiational cooling, and with the cool air in place we are going to get one of the coldest nights of the year,” Jones said.
It is a good idea to protect the gardens that you worked so hard on this summer. They should be fine if they are simply covered with a sheet or blanket. For one overnight freeze, that should be enough.
Another thing you can do to make your Tuesday morning a little bit easier is to protect your above-ground pipes.
“Your best option is to drain your lines if you have above-ground water lines,” said Clint Zambia, superintendent of Rock Springs Water Department. “As far as irrigation, if it’s buried two inches into the dirt, it’s not going to freeze in one night,” Zambia said.
But don’t worry, it will warm back up after tonight’s unusual chill.
“As the week goes on, we’ll see temperatures back up into the upper 70s, maybe even lower 80s east of the Continental Divide,” Jones said. While local daytime temperatures will be warmer, overnight low temperatures will remain in the upper 30s through at least Friday.