All destinations USA September Your holiday weather, at a glance USA in September: where is it warmest? In September, Phoenix is the warmest place with 37 °C by day, Seward, Alaska the coolest with 10 °C. 120 of 150 destinations have good holiday weather.
All destinations in September, warmest first Long-term averages for the month: daytime high, sea, sunshine and rainy days.
Place Score Air Sea Sun Rain days Phoenix 50 37° – 9 h 3 Scottsdale, Arizona 50 37° – 9 h 3 Palm Springs, California 50 36° – 10 h 2 Tucson 54 34° – 9 h 4 Las Vegas 60 33° – 10 h 1 Austin 55 32° – 7 h 7 San Antonio 55 32° – 7 h 7 Sacramento 74 31° – 10 h 1 El Paso 73 31° – 9 h 4 Fort Worth 66 31° – 8 h 5 Dallas 65 31° – 8 h 6 Houston 51 31° – 6 h 12 South Padre Island, Texas 76 30° 29° 7 h 16 Sarasota, Florida 72 30° 29° 7 h 18 Key Largo, Florida Keys 72 30° 30° 7 h 20 Naples, Florida 71 30° 30° 6 h 19 Fort Myers Beach, Florida 71 30° 30° 6 h 20 Marco Island, Florida 71 30° 30° 6 h 21 West Palm Beach, Florida 71 30° 29° 6 h 24 Boca Raton 70 30° 29° 6 h 23 Mobile 60 30° 29° 6 h 11 Baton Rouge 57 30° – 7 h 11 Corpus Christi 53 30° 29° 7 h 13 Fort Lauderdale 44 30° 29° 6 h 22 Orlando 41 30° – 6 h 19 Tampa 40 30° 29° 6 h 18 Lahaina, Maui 99 29° 27° 9 h 1 Kihei, Maui 96 29° 27° 8 h 2 Los Angeles 90 29° 20° 10 h 1 Mariposa (Yosemite) 83 29° – 10 h 1 Moab, Utah 83 29° – 9 h 4 Sedona, Arizona 82 29° – 8 h 5 Destin, Florida 80 29° 29° 6 h 12 Panama City Beach, Florida 80 29° 29° 6 h 12 Galveston, Texas 78 29° 29° 6 h 13 Tulsa 77 29° – 8 h 7 Oklahoma City 76 29° – 8 h 6 Key West 75 29° 30° 7 h 17 Memphis 75 29° – 7 h 7 Marathon, Florida Keys 75 29° 30° 7 h 17 Clearwater Beach, Florida 74 29° 29° 6 h 16 Miami Beach 71 29° 29° 6 h 21 St. Pete Beach, Florida 71 29° 29° 6 h 17 Daytona Beach, Florida 69 29° 28° 6 h 19 Savannah 61 29° – 6 h 14 New Orleans 60 29° – 6 h 13 Jacksonville 51 29° – 6 h 16 Miami 46 29° 29° 6 h 21 Honolulu, Hawaii 96 28° 27° 9 h 6 Long Beach 96 28° 21° 10 h 1 Napa Valley 96 28° – 10 h 1 Page (Lake Powell) 90 28° – 9 h 3 Albuquerque 88 28° – 8 h 4 Santa Monica 86 28° 20° 10 h 1 Lihue, Kauai 83 28° 27° 8 h 14 Nashville 79 28° – 7 h 8 Hilton Head Island 78 28° 28° 6 h 13 Charleston 77 28° 27° 6 h 13 St. Augustine 71 28° 28° 6 h 18 San Jose, California 100 27° – 9 h 1 Reno 100 27° – 9 h 2 St. Louis 86 27° – 7 h 7 Malibu 86 27° 20° 10 h 1 Louisville 84 27° – 7 h 8 Kapaa, Kauai 83 27° 27° 8 h 14 Greenville 81 27° – 6 h 8 Knoxville 81 27° – 6 h 8 Santa Barbara 81 27° 19° 10 h 1 Gatlinburg (Smoky Mountains) 80 27° – 6 h 9 Atlanta 79 27° – 6 h 8 Myrtle Beach, South Carolina 78 27° 27° 6 h 13 Charlotte 77 27° – 6 h 9 Raleigh 76 27° – 6 h 10 Boise 100 26° – 9 h 2 Salt Lake City 99 26° – 9 h 5 Laguna Beach, California 88 26° 21° 9 h 1 Kansas City 87 26° – 7 h 8 Cincinnati 84 26° – 7 h 8 Washington, D.C. 78 26° 24° 6 h 10 Richmond 77 26° – 6 h 9 Hilo, Hawaii 66 26° 27° 8 h 21 Lanai 100 25° 27° 9 h 0 Denver 92 25° – 8 h 6 San Diego 88 25° 21° 9 h 1 Omaha 88 25° – 8 h 7 Des Moines 88 25° – 7 h 7 Indianapolis 86 25° – 7 h 7 Columbus 82 25° – 7 h 9 Nags Head, Outer Banks 82 25° 25° 6 h 11 Virginia Beach 80 25° 24° 6 h 11 Philadelphia 79 25° 23° 6 h 9 Baltimore 78 25° 24° 6 h 10 Ocean City, Maryland 76 25° 23° 6 h 9 Kailua-Kona, Hawaii 76 25° 27° 8 h 29 Spokane 98 24° – 8 h 4 Leavenworth, Washington 96 24° – 8 h 4 Portland, Oregon 91 24° – 8 h 6 Flagstaff (Grand Canyon) 88 24° – 8 h 8 New York 78 24° 22° 6 h 9 Asheville, North Carolina 77 24° – 6 h 10 Pittsburgh 75 24° – 6 h 10 Atlantic City 71 24° 22° 6 h 9 San Francisco 100 23° 15° 9 h 1 Oakland 100 23° 15° 9 h 1 Bend, Oregon 97 23° – 8 h 4 Santa Fe 95 23° – 8 h 5 Detroit 83 23° – 7 h 8 Minneapolis 82 23° – 7 h 9 Providence 80 23° 20° 6 h 9 Cleveland 78 23° – 7 h 11 Albany 78 23° – 6 h 9 Rochester 77 23° – 6 h 10 Cape May, New Jersey 69 23° 23° 6 h 10 New Haven 64 23° 22° 6 h 9 South Lake Tahoe 100 22° – 9 h 3 Chicago 83 22° – 7 h 9 Boston 82 22° 18° 6 h 8 Buffalo 78 22° – 6 h 10 Monterey, California 57 22° 15° 9 h 1 Sun Valley (Ketchum), Idaho 97 21° – 8 h 4 Park City, Utah 91 21° – 8 h 7 Steamboat Springs, Colorado 90 21° – 8 h 7 Seattle 82 21° 11° 7 h 9 Milwaukee 82 21° – 7 h 9 Montauk, Long Island 48 21° 20° 7 h 9 Salem 40 21° 18° 6 h 8 Provincetown, Cape Cod 39 21° 18° 7 h 9 Kennebunkport, Maine 35 21° 16° 7 h 8 Mammoth Lakes, California 100 20° – 9 h 3 Aspen, Colorado 91 20° – 8 h 7 Vail, Colorado 90 20° – 8 h 7 Jackson Hole, Wyoming 89 20° – 8 h 7 Whitefish (Glacier National Park) 89 20° – 8 h 7 Stowe, Vermont 77 20° – 6 h 10 Edgartown, Martha's Vineyard 41 20° 20° 6 h 9 Hyannis, Cape Cod 40 20° 19° 6 h 9 Portland, Maine 33 20° 16° 7 h 8 Telluride, Colorado 87 19° – 8 h 8 Lake Placid, New York 74 19° – 6 h 11 Carmel-by-the-Sea 40 19° 15° 9 h 1 Nantucket 32 19° 19° 7 h 8 West Yellowstone 90 18° – 8 h 7 Bar Harbor (Acadia) 83 18° 13° 6 h 8 Cannon Beach, Oregon 27 18° 15° 7 h 7 Breckenridge, Colorado 87 17° – 7 h 8 Ketchikan, Alaska 36 14° 13° 4 h 20 Sitka 1 14° 12° 3 h 21 Juneau 0 13° – 3 h 21 Anchorage 33 12° 12° 5 h 15 Seward, Alaska 15 10° 12° 4 h 18
USA in September: quick answers USA in September: where is it warmest? The warmest places in September are Phoenix (37 °C), Scottsdale, Arizona (37 °C) and Palm Springs, California (36 °C).
USA in September: where is the sea warmest? The sea is warmest at Key Largo, Florida Keys (30 °C), Naples, Florida (30 °C) and Fort Myers Beach, Florida (30 °C).
USA in September: where is the weather best? The best holiday weather in September – warm, sunny and dry – is in San Jose, California, Reno and Boise.