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Boise, ID

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Freeze Probability Data

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Southwest Idaho and Southeast Oregon Freeze Probability Data

The tables list the probability of a given temperature or lower will be reached by a date. Probabilities are based on observed temperatures from the 1991–2020 Climate Normals period.
A hard freeze is when temperatures reach or fall below 28°F.
A freeze is when temperatures reach or fall below 32°F.
Data derived from NCEI 1991–2020 U.S. Climate Normals (Source: ACIS historical data).
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