Boise, Idaho – A slight cooldown hits southwest Idaho Friday as temperatures in Boise fall to 74°F with a 20% chance of afternoon showers. Winds will pick up by midday, and brief rain may disrupt errands or early outdoor plans in Ada County.
According to the National Weather Service, light northwest winds will strengthen to 11–16 mph by late morning. While most areas will remain dry, clouds will increase as a weak disturbance moves across southern Idaho. Drivers along I-84 between Boise and Nampa may notice reduced visibility and gusty crosswinds, especially westbound.
Friday night remains breezy with continued shower chances, particularly after 6 p.m. A second wave of scattered showers could arrive by Saturday afternoon. While the weekend begins on a cooler note — with highs near 66°F Saturday — sunshine and warmth return Sunday as Boise climbs back to 71°F.
Looking ahead to Monday, sunshine dominates with a projected high of 79°F, signaling a gradual warm-up through early next week. Tuesday and Wednesday push back into the upper 80s and low 90s, ending the brief cool pattern.
Residents should dress for cooler mornings and prep for weekend breezes. Outdoor events Friday and Saturday should include tents or canopies to block wind or light showers.
🌤️ Boise 5-Day Weather Forecast: June 20–24
- Friday: High 74°F. Slight chance of PM showers. Breezy northwest winds.
- Saturday: High 66°F. Continued shower risk (20%).
- Sunday: Mostly sunny. High near 71°F.
- Monday: Sunny and warmer. High around 79°F.
- Tuesday: Mostly sunny. High climbs to 87°F.
