Todays weather in Boise Idaho - Wednesday - 13 May 2026

(00:00:00) Todays weather in Boise Idaho - Wednesday - 13 May 2026 (00:00:40) Current Conditions and Temperature (00:01:22) UV Risk and Humidity (00:01:44) Sharp Cooling Trend Tomorrow (00:02:25) Dry Window Through Thursday (00:02:51) Rain System Arrives Late Month (00:03:24) What to Watch Next Boise is under a wind advisory today, and those peak gusts of 55 mph are the number that defines everything about this forecast. West winds are running 25–35 mph through most of the day, making commutes tricky on elevated stretches and open valley roads. Despite clear skies and a comfortable high of 77°F (25°C), the wind will undercut that warmth all day — a light layer in the morning is still a smart call.Don't let the sunshine fool you on UV exposure either. The UV index hits 7.8 today — firmly in the high range — and low humidity at 25% means your skin dries faster than you'd expect. Sunscreen is practical, not optional.The bigger story unfolds tomorrow, May 14, when the high drops to just 13°C — a 12-degree single-day plunge. Skies stay sunny, so the shift won't look dramatic, but it will feel it. That cooling continues through the week, with temperatures reaching around 8°C by May 17–18. This is a sustained pattern shift, not a brief dip.The dry window through roughly May 20 is worth using deliberately — ideal for outdoor projects, yard work, or anything needing dry ground. After that, a moderate-to-heavy rain system is forecast to arrive May 21–22. Timing and peak intensity still carry some uncertainty, but the dry pattern breaks meaningfully.For today: secure anything loose outside, drive cautiously, wear sunscreen, and keep a layer handy. Boise spring is showing its volatility.This episode includes AI-generated content.