BOISE, Idaho – Clear skies and crisp mornings are setting the stage for a nearly perfect fall weekend across southwest Idaho before a round of rain moves in Sunday. After a week of steady sunshine, residents will want to take advantage of Saturday’s bright, dry stretch before cooler air and scattered showers arrive late in the weekend.
According to the National Weather Service in Boise, Thursday and Friday bring calm, mild conditions with highs in the lower 60s and light northwest winds. Outdoor plans, football games, or fall festivals across Ada and Canyon counties should see no weather interruptions. By Saturday, highs rise into the mid-60s under abundant sun, offering ideal conditions for pumpkin patches, leaf viewing, or a drive along I-84.
However, clouds will increase Saturday night as a Pacific front edges toward the Treasure Valley. Showers likely develop Sunday afternoon with up to a 60 percent chance of rain, especially near Boise and Mountain Home. Temperatures dip slightly into the upper 50s Monday, signaling a classic mid-October cooldown.
Drivers should be prepared for wet roads by Sunday evening and allow extra travel time, particularly on the I-84 corridor. Residents planning outdoor events this weekend should enjoy the sunshine Saturday and secure decorations before winds and rain arrive.
Five-Day Forecast for Boise, ID:
Thu: 61/40 – Sunny; calm and mild.
Fri: 64/38 – Sunny; light winds.
Sat: 66/46 – Bright and warm; excellent for outdoor plans.
Sun: 65/38 – Showers likely; cooler late.
Mon: 55/35 – Partly sunny; breezy and cooler.
