The sunniest places in the USA in September
The sunniest place in the USA in September is San Luis Obispo — Sunshine Score 99/100, around 25°C days and 6 mm of rain across the month, ahead of Mammoth Lakes (99) and Bishop (99). 586 destinations compared from long-term climate normals.
Chasing pure heat instead? Lake Havasu City is the USA's warmest in September at 39°C / 102°F average daytime highs.
The USA by month: January · February · March · April · May · June · July · August · September · October · November · December · overview
| # | Destination | Score | Day high | Rain | Sea |
|---|---|---|---|---|---|
| 1 | San Luis Obispo | 99 | 25° / 77°F | 6 mm | 16° |
| 2 | Mammoth Lakes | 99 | 23° / 73°F | 7 mm | — |
| 3 | Bishop | 99 | 31° / 88°F | 5 mm | — |
| 4 | Santa Barbara | 99 | 28° / 82°F | 3 mm | 21° |
| 5 | Reno | 99 | 27° / 81°F | 8 mm | — |
| 6 | Stockton | 99 | 32° / 90°F | 3 mm | — |
| 7 | Truckee | 98 | 24° / 75°F | 8 mm | — |
| 8 | Monterey | 98 | 20° / 68°F | 5 mm | 15° |
| 9 | Santa Rosa | 98 | 24° / 75°F | 5 mm | 16° |
| 10 | Page | 96 | 30° / 86°F | 22 mm | — |
| 11 | Santa Maria | 96 | 24° / 75°F | 6 mm | 16° |
| 12 | Los Angeles | 96 | 31° / 88°F | 3 mm | 21° |
| 13 | Hawthorne | 96 | 32° / 90°F | 3 mm | 22° |
| 14 | Grand Canyon - Tusayan | 95 | 26° / 79°F | 29 mm | — |
| 15 | Cedar City | 95 | 26° / 79°F | 25 mm | — |
| 16 | Moab | 95 | 29° / 84°F | 28 mm | — |
| 17 | San Diego | 95 | 22° / 72°F | 5 mm | 22° |
| 18 | Prescott | 94 | 29° / 84°F | 31 mm | — |
| 19 | Show Low | 94 | 26° / 79°F | 32 mm | — |
| 20 | Gallup | 94 | 26° / 79°F | 34 mm | — |
| 21 | Albuquerque | 94 | 29° / 84°F | 34 mm | — |
| 22 | Elko | 94 | 26° / 79°F | 22 mm | — |
| 23 | Boise | 94 | 27° / 81°F | 14 mm | — |
| 24 | Silver City | 93 | 28° / 82°F | 39 mm | — |
| 25 | Las Cruces | 93 | 30° / 86°F | 36 mm | — |
| 26 | Flagstaff | 93 | 25° / 77°F | 37 mm | — |
| 27 | Alamosa | 93 | 24° / 75°F | 37 mm | — |
| 28 | Pueblo | 93 | 29° / 84°F | 29 mm | — |
| 29 | Rock Springs | 93 | 23° / 73°F | 25 mm | — |
| 30 | Hailey | 93 | 23° / 73°F | 23 mm | — |
| 31 | Twin Falls | 93 | 26° / 79°F | 19 mm | — |
| 32 | Pasco | 93 | 27° / 81°F | 10 mm | — |
| 33 | El Paso | 92 | 31° / 88°F | 41 mm | — |
| 34 | Santa Fe | 92 | 26° / 79°F | 41 mm | — |
| 35 | Colorado Springs | 92 | 26° / 79°F | 35 mm | — |
| 36 | Vernal | 92 | 26° / 79°F | 34 mm | — |
| 37 | Denver | 92 | 26° / 79°F | 34 mm | — |
| 38 | Riverton | 92 | 24° / 75°F | 31 mm | — |
| 39 | Cortez | 91 | 26° / 79°F | 46 mm | — |
| 40 | Taos | 91 | 24° / 75°F | 46 mm | — |
Top 40 of 586 shown — every destination is on the the USA country page.
Worldwide instead? See where it's sunny in September. For the hottest rather than the sunniest, the the USA heat guide covers every month.