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Boise, ID Weather Update: Frost Risk Tuesday Morning, Oct. 13
Boise, ID – Frost could coat lawns and exposed plants across Boise early Tuesday, October 13, as temperatures fall into the 30s. Patchy fog may also reduce visibility during the morning commute, creat
By Evan Cross · 2026-10-11T11:31:55.373Z
Boise, ID – Frost could coat lawns and exposed plants across Boise early Tuesday, October 13, as temperatures fall into the 30s. Patchy fog may also reduce visibility during the morning commute, creating another concern for drivers.
According to the National Weather Service in Boise, temperatures will fall to around 35 degrees Monday night. Areas of frost are forecast before 9 a.m. Tuesday, with patchy fog possible during the same period.
Tuesday Morning Brings Frost and Fog
Residents with sensitive plants should consider protecting them Monday evening before temperatures drop overnight.
Drivers traveling early Tuesday should watch for localized fog, particularly in low lying areas where visibility can change quickly.
No widespread freezing temperatures are explicitly forecast for Boise, although frost can develop when official air temperatures remain above 32 degrees.
Showers Continue Through Monday
Before the colder morning arrives, Boise faces scattered showers Sunday, October 11, with a 40% chance of precipitation, mainly after 3 p.m.
Sunday's high will reach approximately 58 degrees before temperatures fall to 37 overnight.
Columbus Day, Monday, October 12, brings a 20% chance of morning showers before 10 a.m. Cloudy skies and a high near 54 degrees could keep outdoor holiday activities feeling chilly.
Sunshine Returns as Temperatures Climb
Tuesday afternoon should turn sunny after the morning fog clears, with temperatures reaching 63 degrees.
Wednesday, October 14, brings sunshine and a high near 65 degrees.
The warming trend continues Thursday and Friday, with highs near 69 and 73 degrees, respectively.
Saturday could reach 74 degrees under sunny skies.
For Boise residents, Tuesday morning remains the period to watch most closely, particularly for frost sensitive vegetation and early travel.