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
Day: Patchy fog before 9am, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 92, with temperatures falling to around 88 in the afternoon. Southwest wind 0 to 5 mph. Chance of precipitation is 40%.
Night: A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Southwest wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Day: Showers and thunderstorms. Partly sunny. High near 84, with temperatures falling to around 80 in the afternoon. Southwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Night: Showers and thunderstorms. Mostly cloudy, with a low around 68. West wind 0 to 5 mph. Chance of precipitation is 80%.
Day: A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Northwest wind 0 to 5 mph. Chance of precipitation is 40%.
Night: A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 64. North wind 0 to 5 mph. Chance of precipitation is 40%.
Day: Sunny, with a high near 86. North wind 0 to 5 mph.
Night: Mostly clear, with a low around 63. North wind 0 to 5 mph.
Day: Sunny, with a high near 88. North wind around 5 mph.
Night: Mostly clear, with a low around 65.
Day: Sunny, with a high near 88.
Night: Mostly clear, with a low around 66.
Day: Sunny, with a high near 89.
Night: Mostly clear, with a low around 65.
Tue's High Temperature
108 at 16 Miles Southwest Of Tecopa, CA and Death Valley, CA
Tue's Low Temperature
15 at 14 Miles West-southwest Of Mackay, ID