Key Highlights:
- Comfortable Fall Weather: September marks the beginning of fall in Las Vegas, with daytime temperatures gradually cooling from 99°F (37°C) at the start of the month to around 89°F (32°C) by the end.
- Still Great for Pools: Resort pools and dayclubs remain open throughout September, making it one of the best months to enjoy poolside fun without the extreme summer heat.
- Pleasant Evenings: Nighttime temperatures range from 65°F to 76°F (18°C to 24°C), creating ideal conditions for walking the Strip, rooftop dining, and outdoor attractions.
- Daily Temperature Guide: Use the historical day-by-day temperature table below to plan sightseeing, packing, and outdoor activities.
September is one of the best months to visit Las Vegas if you want warm weather without the intense heat of July and August. The city begins its transition from summer to fall, bringing slightly cooler days, comfortable evenings, and plenty of sunshine.
Early September still feels like summer, with afternoon temperatures close to 100°F (38°C). However, temperatures gradually become more pleasant throughout the month. By the final week, daytime highs usually stay in the upper 80s to low 90s, making it much easier to explore outdoor attractions.
Unlike the peak summer months, September allows visitors to comfortably enjoy both daytime activities and nighttime entertainment. Whether you’re relaxing by a resort pool, exploring the Strip, hiking at Red Rock Canyon, or dining outdoors, the weather is generally favorable throughout the month.
Historical Day-by-Day Las Vegas September 2026 Temperatures
| Date | Average High | Average Low |
|---|---|---|
| September 1 | 99°F (37°C) | 76°F (24°C) |
| September 2 | 99°F (37°C) | 76°F (24°C) |
| September 3 | 98°F (37°C) | 75°F (24°C) |
| September 4 | 98°F (37°C) | 75°F (24°C) |
| September 5 | 97°F (36°C) | 74°F (23°C) |
| September 6 | 97°F (36°C) | 74°F (23°C) |
| September 7 | 97°F (36°C) | 74°F (23°C) |
| September 8 | 96°F (36°C) | 73°F (23°C) |
| September 9 | 96°F (36°C) | 73°F (23°C) |
| September 10 | 96°F (36°C) | 73°F (23°C) |
| September 11 | 96°F (36°C) | 73°F (23°C) |
| September 12 | 95°F (35°C) | 72°F (22°C) |
| September 13 | 95°F (35°C) | 72°F (22°C) |
| September 14 | 94°F (34°C) | 71°F (22°C) |
| September 15 | 94°F (34°C) | 71°F (22°C) |
| September 16 | 94°F (34°C) | 71°F (22°C) |
| September 17 | 93°F (34°C) | 70°F (21°C) |
| September 18 | 93°F (34°C) | 70°F (21°C) |
| September 19 | 93°F (34°C) | 69°F (21°C) |
| September 20 | 92°F (33°C) | 69°F (21°C) |
| September 21 | 92°F (33°C) | 68°F (20°C) |
| September 22 | 91°F (33°C) | 68°F (20°C) |
| September 23 | 91°F (33°C) | 67°F (19°C) |
| September 24 | 91°F (33°C) | 67°F (19°C) |
| September 25 | 90°F (32°C) | 66°F (19°C) |
| September 26 | 90°F (32°C) | 66°F (19°C) |
| September 27 | 90°F (32°C) | 66°F (19°C) |
| September 28 | 89°F (32°C) | 65°F (18°C) |
| September 29 | 89°F (32°C) | 65°F (18°C) |
| September 30 | 89°F (32°C) | 65°F (18°C) |
Does It Rain in Las Vegas During September?
Rain is uncommon in September. While early September can occasionally see the last effects of the Southwest monsoon season, storms are usually brief and isolated. Most days are sunny with low humidity and clear skies.
Average rainfall is only around 0.3 inches (7 mm) for the entire month, so weather-related disruptions are rare. Outdoor events, rooftop bars, golf courses, and sightseeing tours typically operate without interruption.
What Should You Pack?
Packing for September is simple because temperatures vary between warm afternoons and cooler evenings.
Bring:
- Lightweight shirts, shorts, and breathable clothing for daytime.
- Comfortable walking shoes.
- Sunglasses, sunscreen, and a hat.
- A light sweater, hoodie, or jacket for evenings and heavily air-conditioned casinos.
- Swimsuits if you plan to visit resort pools or dayclubs.
Local Tips for Staying Comfortable
- Enjoy the pools early or late: September temperatures are ideal for swimming, and pools remain busy throughout the month.
- Carry water: Even though it’s cooler than summer, the desert climate is still very dry.
- Take advantage of cooler evenings: Sunset is the perfect time to explore the Strip, visit outdoor attractions, or dine on patios.
- Visit Red Rock Canyon: September offers much better hiking conditions than July or August, especially during the morning.
Conclusion
September offers an excellent balance between summer warmth and fall comfort. You can still enjoy pools, outdoor attractions, golf, concerts, rooftop lounges, and evening walks without dealing with the extreme temperatures of July and August. With mostly sunny skies, little rainfall, and gradually cooling temperatures throughout the month, September is one of the most enjoyable times to experience Las Vegas.
Travel Tip: If you’re planning to spend long days exploring the Strip, schedule outdoor sightseeing during the morning or evening. During the afternoon, take advantage of the city’s air-conditioned resorts, museums, shopping centers, and casinos before heading back outside when temperatures become more comfortable.
FAQ
Are Las Vegas pools open in September?
Yes. Most major hotel pools and dayclubs remain open throughout September. Many pools are heated, and daytime temperatures are still warm enough for swimming.
Do I need a jacket?
A heavy jacket isn’t necessary, but a light sweater or jacket is recommended for evenings and indoor venues where air conditioning can feel chilly.
Is September a good month to visit Las Vegas?
Yes. September is considered one of the best times to visit because it combines warm weather, lower heat than midsummer, comfortable evenings, and excellent conditions for both outdoor activities and nightlife.
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