August in Boise, ID: shoulder season for golf — playable with smart tee time selection. Best tee times: tee off before 8 AM to beat the heat.
| Average August Weather | |
|---|---|
| Avg daily high | 92°F |
| Avg daily low | 64°F |
| Rainy days | 3 / mo |
| Avg peak wind | 11.3 mph |
August sits at the turning point of Boise's hottest stretch. Coming out of July's peak heat — where highs averaged 96F — August pulls back to 92F, a modest 4-degree drop that doesn't change the fundamental challenge: afternoons are genuinely hot. Early morning rounds are the smart play, with lows of 64F making the first few hours comfortable before temperatures climb. The 28F daily swing is worth noting if you're planning a long day at the course.
Precipitation is almost a non-issue. August averages just 3 rain days, tied with September for second-driest in the year, and only two more than July's near-perfect 1. Wind sits at 11.3 mph peak, calm enough that it rarely dictates club selection on most holes. The shoulder-season badge reflects that heat management, not weather disruption, is the primary variable this month.
Book the earliest available tee time — 6 or 7 AM — to get at least the front nine in before Boise's August highs approach 90F. Afternoon slots from noon onward carry the most heat exposure, and the 28F daily swing means conditions you enjoy on the first tee can feel very different by the 18th hole. See how conditions rate hour by hour on our playability scale.
August drops 4F from July's 96F average high, but that still keeps afternoons firmly in heat-management territory, especially compared to the target 60-80F comfort window. Moving into September, the drop is more meaningful — a 9F decrease to 83F — while lows fall sharply from 64F to 55F, making September mornings noticeably cooler and the overall day more playable. Precipitation holds steady at 3 days in both August and September, so rain risk doesn't factor into which month you'd prefer.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for Boise, ID for the current playability rating, hourly wind, temperature, and the recommended tee time window.
← July in Boise, ID • September in Boise, ID →
Highs average 92F, which is above the comfortable 60-80F range for most golfers, so timing matters more than the month itself. Tee times before 8 AM keep you in manageable temperatures for most of the round. Afternoon rounds after noon are genuinely strenuous and best avoided unless you're heat-acclimated.
August averages 3 precipitation days for the entire month, making it the second-driest month of the year alongside September. The probability of a rain delay on any given day is low, and most moisture that does fall comes as brief afternoon thunderstorms rather than all-day events. You're unlikely to get rained out, but watching the sky in the early afternoon is still worthwhile.