Things to Do in United States in September
September weather, activities, events & insider tips
September Weather in United States
Temperature, rainfall and humidity at a glance
Is September Right for You?
Weigh the advantages and considerations before booking
- + Labor Day weekend slams the brakes on summer crowds. Beaches from Maine to California empty by half. National park trails that were shoulder-to-shoulder in August now feel like private paths. You can walk for miles and meet only wind.
- + September nails the sweet spot. Days hit 80°F/27°C; nights cool to 64°F/18°C. Outdoor dining finally makes sense. Eat lobster rolls al fresco in Maine without August sweat. Sip patio margaritas in Austin after the brutal heat breaks.
- + Fall foliage fires up by late September. Vermont's Route 100 becomes a 200-km (124-mile) tunnel of gold and crimson. Hotel rooms in Stowe open up. No need to book six months ahead.
- + Football season roars to life. Nothing feels more American than tailgating in a college lot at 8 AM. Charcoal and bratwurst scent the air. Marching bands tune up. Team colors turn every Saturday into a holiday.
- − Hurricane season peaks along Atlantic and Gulf coasts. September sees the highest storm count. Florida can order sudden evacuations. Outer Banks trips face last-minute cancellations.
- − The Southwest still broils. Phoenix punches 100°F (38°C) well into September. Desert hikes stay dangerous until the month ends. Wait for October.
- − Wildfire season smears Western skies gray. California's Central Valley and the Pacific Northwest choke on smoke. Mountain views vanish. Outdoor plans turn unpleasant.
Year-Round Climate
How September compares to the rest of the year
| Month | High | Low | Rainfall |
|---|---|---|---|
| Jan | 7°C | -1°C | 2.9 inches (74 mm) |
| Feb | 9°C | 0°C | 2.6 inches (66 mm) |
| Mar | 13°C | 3°C | 3.5 inches (89 mm) |
| Apr | 20°C | 9°C | 3.2 inches (81 mm) |
| May | 24°C | 14°C | 3.9 inches (99 mm) |
| Jun | 29°C | 19°C | 4.2 inches (107 mm) |
| Jul | 32°C | 22°C | 4.3 inches (109 mm) |
| Aug | 31°C | 21°C | 3.3 inches (84 mm) |
| Sep | 27°C | 17°C | 3.9 inches (99 mm) |
| Oct | 20°C | 11°C | 3.7 inches (94 mm) |
| Nov | 14°C | 5°C | 2.9 inches (74 mm) |
| Dec | 9°C | 1°C | 3.4 inches (86 mm) |
Best Activities in September
Top things to do during your visit
September brings a sharp, clear light to the United States. Summer's humidity is gone. Daytime temperatures often hit 80 degrees Fahrenheit, while nights cool to a brisk 64. This is a month for sweaters and campfires. The national mood shifts toward local festivals and harvests. You will see the first golden leaves in northern forests. In Monterey, the scent of charcoal-grilled artichokes mixes with Pacific fog. The world's longest-running jazz festival fills the fairgrounds with saxophones. Meanwhile, in Telluride, Colorado, the thin, pine-scented air carries blues riffs. The San Juan Mountains echo with the clink of craft beer glasses. The evening chill reminds you of the high altitude. Travelers can see vast landscapes under a gentler sun. Visit the painted deserts of the Southwest or the granite peaks of the Rockies. Do it before the deeper cold arrives.
Vegas: Grand Canyon, Hoover Dam, Lunch/Skywalk Options, WiFi
adventureTrade Las Vegas for the Grand Canyon's South Rim. This full-day adventure replaces slot machines with profound silence. You will grasp the immense scale from multiple overlooks. See the Colorado River's work. Hear the hum of the Hoover Dam's generators deep inside its concrete arches. You can step onto the glass Skywalk. A transparent panel is all that separates you from the canyon floor. A guided tour with lunch simplifies the long desert drive. It lets you absorb the raw, sun-bleached beauty without logistical worry.
Alcatraz Island & 48-Hour Hop-On Hop-Off Tour
transportThis pairing combines Alcatraz Island with a hop-on, hop-off bus tour across San Francisco. The island's echoing cellblocks feel solemn. You will hear recorded voices of former inmates. Feel the cold bay wind whip through the exercise yard. See the rusting bars that held infamous criminals. The views of the city skyline are impressive. Your subsequent bus ticket lets you chase those views. Go from the clanging cable cars on Powell Street to the salt spray at the base of the Golden Gate Bridge.
Elvis-Themed Graceland Chapel Wedding or Vow Renewal
otherThis experience is set in a chapel next to the Graceland mansion in Memphis. It wraps you in the glitz of Elvis Presley's era. You will hear the King's ballads as you exchange vows. See the well-known stained glass and plush red interiors. Feel the playful, over-the-top spirit of the city's musical heart. The celebration is both sincere and spectacularly themed.
Full-Day Guided Yellowstone Day Tour
day_tripA guided tour through Yellowstone National Park is a full day affair. You will hear the otherworldly sounds of bubbling mud pots. See emerald hot springs steaming against evergreen forests. The sulfurous smell of the geothermal basins is memorable. In September, you might see elk bugling in the Lamar Valley. Bison herds move through grasslands touched with early frost. This all happens under a vast, clear Wyoming sky. A knowledgeable guide navigates the large road system. They maximize encounters with unique geology and wildlife.
Bryce and Zion National Parks Tour with Lunch
guided_experienceThis tour connects Utah's sculpted landscapes. See the towering sandstone cliffs of Zion Canyon and the silent, crimson hoodoo forests of Bryce Canyon. You will feel the cool shade of the Zion Narrows. Hear the rustle of cottonwood leaves along the Virgin River. Witness the impossible pink and orange glow of Bryce's amphitheaters at sunset. A provided lunch fuels a day of short hikes and panoramic stops. These highlight the stark contrast between the two parks.
Vegas: Grand Canyon, Hoover Dam, Skywalk Option, & Two Meals
adventureAnother complete option from Las Vegas includes the Grand Canyon Skywalk and the Hoover Dam. You will feel the visceral thrill of the Skywalk. Hear the deep, resonant hum of the dam's inner corridors. Taste a hearty, included meal. Feel the dry desert air on your skin at canyon overlooks. See the stark contrast between the muted Mojave colors and the canyon's explosive reds and purples. Two meals and direct transport let you focus on the spectacle.
Where to Stay in United States in September
Hand-picked hotels across price tiers for September travellers.
Trump International Hotel & Tower® New York
September Events & Festivals
What's happening during your visit
The world's longest-running jazz festival (since 1958) seizes Monterey County Fairgrounds for three days. Outdoor stages and tiny clubs pulse nonstop. Grilled artichoke smoke drifts past saxophone solos. Night fog rolls in from Monterey Bay, draping late-night sets in mystery.
At 2667 m (8,750 ft), this Colorado town throws a festival where the air is thin and the beer is cold. The San Juan Mountains form a natural amphitheater. September nights can drop enough to need a jacket when the headliner starts at 10 PM.
Packing Checklist
Bookmark this page — your progress is saved between visits
Climate-specific gear, brand recommendations, and what to leave at home.
View United States Packing List →Essential Tips
Insider knowledge and common pitfalls to avoid
Didn't see anything interesting yet?
Browse Viator's full catalog of tours, day trips, food experiences, and private guides in United States.
See All United States Tours on Viator