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Arctic Air Mass Lingers for Areas of the East; Critical Fire Weather for the Plains; Active Weather Pattern for Hawaii

Arctic air lingers for the east, however, winds will slowly subside and a slow moderating trend starts during the week. Moisture continues to provide rainfall and higher elevation snow for the Pacific Northwest, northern California and northern Rockies through Monday. For the State of Hawaii, dangerous surf conditions with strong winds and heavy rainfall will impact the islands through Monday. Read More >

Southwest Idaho and Southeast Oregon Freeze Data

Southwest Idaho and Southeast Oregon Freeze Data

Table lists the average freeze date from 1991 through 2020 (30-year climate period). For the spring, the average last freeze date is given. For the fall, the average first freeze date is given.

A frost can occur when temperatures reach or fall below 36°F.
A hard freeze is when temperatures reach or fall below 28°F.
A freeze is when temperatures reach or fall below 32°F.

City Spring (Average Last Freeze Date) Fall (Average First Freeze Date)
36°F 32°F 28°F 24°F 36°F 32°F 28°F 24°F
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