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Boise, ID

Weather Forecast Office

NWS Forecast Office Boise, ID

Weather.gov > Boise, ID
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Last Map Update: Thu, Oct 8, 2026 at 10:02:09 pm MDT

Pattern Change this Weekend
Average First Frost and Freeze Dates
A low pressure system will usher in much cooler conditions and rain showers this weekend. Rain is most likely across higher terrain and south central Idaho. Before that, warm, dry, and breezy conditions will lead to elevated fire weather in portions of eastern Oregon and southern Idaho.
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This graphic shows the average first Frost and Freeze dates across a few lower elevation sites. Most sites reach frost and/or freeze in the month of October.
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