Boise, Idaho – Boise heads into Sunday with summer-like heat and rising wind speeds as Memorial Day weekend peaks across southwestern Idaho.
According to the National Weather Service, Sunday will bring sunny skies and a high near 88°F, with southwest winds around 5 mph in the afternoon. Conditions remain dry, but fire danger could increase by Memorial Day as gusts reach up to 21 mph, particularly along the I-84 corridor and foothills.
The warming trend continues into the new week, with Boise holding steady in the low-to-mid 80s through Tuesday before jumping to 88°F again by Wednesday. Nighttime lows stay mild, hovering in the 50s to low 60s, with mostly clear conditions expected. Winds ease slightly after Monday, but stay breezy enough to elevate fire risk and dry vegetation across Ada, Canyon, and Elmore counties.
Memorial Day itself looks mostly sunny with a high near 78°F — ideal for outdoor events, though residents should secure tents or grills and avoid open flames in grassy areas. No rain is in sight through Thursday, with just a slight 20% chance of showers on Thursday afternoon.
Drivers on U.S. 20 and I-84 should be alert for dusty crosswinds and sudden gusts through Monday night. Stay hydrated, limit midday outdoor activity, and monitor local fire updates if venturing into rural zones.
Extended highs stay above average into Friday, peaking near 91°F. No official alerts are in place, but warm, dry, and windy conditions make this an unofficial fire weather alert period across the Boise area.
