September in Temecula, CA: shoulder season for golf — playable with smart tee time selection. Best tee times: morning before noon for the most comfortable round.
| Average September Weather | |
|---|---|
| Avg daily high | 89°F |
| Avg daily low | 64°F |
| Rainy days | 3 / mo |
| Avg peak wind | 11.1 mph |
September is when the tee sheet in Temecula starts to shift, and knowing that shift changes how you should book. Summer's grip loosens slightly — the average high drops to 89°F from August's 92°F — but this is still the 3rd-hottest month of the year, so heat management remains the primary decision on any round. The rain is nearly irrelevant: September averages just 3 precipitation days, making it the 3rd-driest month of the year. Winds sit at 11.1 mph peak, just under August's 12 mph.
What actually changes in September is demand. Labor Day weekend compresses early-month tee times, then the back half of the month sees a noticeable drop in weekend pressure as summer travel winds down. Early morning slots — ahead of the 10 AM heat buildup — become easier to land mid-month. That's the window worth targeting.
Book early-month weekend tee times — especially Labor Day weekend — at least two weeks out, as those slots fill at summer-level demand. Mid-to-late September weekday mornings open up considerably and can often be secured 5–7 days in advance, which is the value window this month creates. See how conditions rate hour by hour on our playability scale.
September's average high of 89°F is 3°F cooler than August's 92°F and carries just one more precipitation day, so the playing conditions are only marginally different from deep summer. The real change comes looking ahead to October, which drops another 7°F to an 82°F average high and adds 2 more precipitation days, putting October clearly into more comfortable scoring territory. Wind is essentially flat across all three months, ranging from 10.3 to 12 mph, so gusts won't factor much into which month you choose.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for Temecula, CA for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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It's manageable with the right tee time. The average high reaches 89°F, which is above the comfortable 60–80°F range, but early morning rounds typically start in the mid-60s. Sticking to tee times before 8 AM keeps most of your round in bearable temperatures.
Labor Day weekend drives heavy demand in the first week, with booking patterns still resembling summer. After that holiday, mid-month weekdays see noticeably lighter traffic as summer travel ends, making September's second and third weeks the best time to find flexible tee time availability without booking far in advance.