1982 - A snowstorm over Wyoming produced 16.9 inches at Lander to esablish a 24 hour record for September for that location.
More on this and other weather history
Night: Mostly clear. Low around 42, with temperatures rising to around 44 overnight. Northwest wind around 9 mph, with gusts as high as 18 mph.
Day: Sunny, with a high near 53. Northeast wind 2 to 7 mph.
Night: Mostly clear. Low around 44, with temperatures rising to around 46 overnight. East wind 1 to 5 mph.
Day: Sunny, with a high near 56. East wind 1 to 9 mph.
Night: Clear, with a low around 49. North wind 2 to 6 mph.
Day: Sunny, with a high near 61.
Night: Mostly clear, with a low around 47.
Day: Sunny, with a high near 58.
Night: Mostly clear, with a low around 48.
Day: Sunny, with a high near 59.
Night: Mostly clear, with a low around 49.
Day: Mostly sunny, with a high near 60.
Night: A slight chance of rain showers after 11pm. Partly cloudy, with a low around 49.
Day: A slight chance of rain showers. Mostly sunny, with a high near 55.
Sun's High Temperature
108 at Death Valley, CA
Sun's Low Temperature
18 at 27 Miles South Of Bonanza, UT