1926 - The temperature at Yellowstone Park dipped to nine degrees below zero. It was the coldest reading of record in the U.S. during September. Severe freezes were widespread over the northwestern U.S. causing great crop destruction. In Washington State, Spokane County experienced their earliest snow of record. Harney Branch Experiment Station in Oregon reported a temperature of 2 degrees above zero to establish a state record for the month of September.
More on this and other weather history
Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms between 10pm and midnight, then areas of fog and a slight chance of rain showers. Mostly cloudy. Low around 55, with temperatures rising to around 57 overnight. North wind around 3 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Day: Areas of fog and a slight chance of rain showers before 2pm. Partly sunny, with a high near 71. North northwest wind 2 to 7 mph. Chance of precipitation is 20%.
Night: Partly cloudy. Low around 49, with temperatures rising to around 51 overnight. West northwest wind 2 to 7 mph.
Day: Sunny, with a high near 76. West wind 2 to 7 mph.
Night: Partly cloudy, with a low around 51. Southwest wind 1 to 6 mph.
Day: Sunny, with a high near 78.
Night: Mostly clear, with a low around 52.
Day: Sunny, with a high near 81.
Night: Mostly clear, with a low around 52.
Day: Sunny, with a high near 79.
Night: Mostly clear, with a low around 50.
Day: Mostly sunny, with a high near 76.
Night: Partly cloudy, with a low around 49.
Day: Mostly sunny, with a high near 73.
Tue's High Temperature
108 at 16 Miles Southwest Of Tecopa, CA and Death Valley, CA
Wed's Low Temperature
19 at 14 Miles West-southwest Of Mackay, ID