Idaho local data guide
Weather Forecast for Boise, Idaho
As of August 25, 2026, the Boise metropolitan area is experiencing hot, dry conditions with increasing cloud cover. Temperatures are expected to peak near 96°F during the day, cooling to an overnight low of approximately 67°F.
Updated with grounded research as of 2026-08-25.
The short answer
On August 25, 2026, Boise, Idaho, residents can expect a hot day with increasing cloud cover. The temperature is forecasted to reach a high near 96°F, providing a warm environment typical for late August in the Treasure Valley. As the sun sets, temperatures are expected to drop to an overnight low of around 67°F, offering some relief from the daytime heat.
Key facts
- Forecasted High Temperature
- 96°F
- Forecasted Low Temperature
- 67°F
- Conditions
- Increasing clouds and hot
Understanding Boise's Late-August Climate
Late August in Boise is characterized by sustained warmth and generally dry conditions. While daytime highs frequently approach or exceed the mid-90s, the semi-arid climate of the Treasure Valley often allows for significant cooling once the sun goes down. This diurnal temperature variation is a key feature of Idaho's high-desert geography.
Impacts on Local Planning
For those relocating to Boise or planning outdoor activities, it is important to account for the intensity of the afternoon sun. Homes in the region are typically equipped with central air conditioning, but residents should remain aware of energy usage peaks during high-heat days. If you are touring properties or moving, prioritize scheduling strenuous outdoor tasks for the early morning hours.
Micro-Climates and Variation
Boise’s weather can vary significantly based on elevation and proximity to the Boise River and the surrounding foothills. Areas closer to the foothills may experience slightly different wind patterns or temperatures compared to those located in the lower-elevation valley floor. Always check hyper-local forecasts if you are evaluating specific neighborhoods.
Common questions
What is the average climate for Boise in August?
August is historically one of Boise's hottest and driest months. High temperatures frequently range from the upper 80s to the mid-90s, with very little precipitation occurring throughout the month.
Where can I find current air quality reports for Boise?
You can monitor local air quality, particularly during wildfire season, through the Idaho Department of Environmental Quality's 'Idaho Air' website or the national AirNow reporting system.
How do I access the latest NWS hazardous weather outlooks for Idaho?
The National Weather Service (NWS) office in Boise provides continuous updates, including hazardous weather outlooks, on their official website. This resource is essential for tracking extreme heat warnings or storm developments.
Related Idaho questions
- What is the average climate for Boise in August?
- Where can I find current air quality reports for Boise?
- How do I access the latest NWS hazardous weather outlooks for Idaho?
Sources and verification
- National Weather Service Boise Forecast (weather.gov)
- Idaho Department of Environmental Quality Air Monitoring (deq.idaho.gov)