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: Patchy fog after 2am. Mostly cloudy, with a low around 46. North wind around 5 mph.
Day: Areas of fog before 10am. Mostly sunny, with a high near 73. Northwest wind around 5 mph.
Night: Mostly clear, with a low around 52. West wind 0 to 5 mph.
Day: Mostly sunny, with a high near 68. North wind around 5 mph.
Night: Mostly clear, with a low around 46. East wind 0 to 5 mph.
Day: Sunny, with a high near 75.
Night: Mostly clear, with a low around 51.
Day: Sunny, with a high near 77.
Night: Mostly clear, with a low around 50.
Day: Sunny, with a high near 74.
Night: Partly cloudy, with a low around 51.
Day: Mostly sunny, with a high near 70.
Night: Partly cloudy, with a low around 51.
Day: Partly sunny, with a high near 68.
Wed's High Temperature
110 at 4 Miles South Of Tolleson, AZ
Wed's Low Temperature
19 at 14 Miles West-southwest Of Mackay, ID