April–May or September–October. Spring and early fall offer mild temperatures (50–70°F in spring; mid-60s°F in fall), fewer crowds than summer, lower hotel rates, and still-active festival and cultural programming. U.S. News Travel cites these shoulder seasons as optimal for balancing weather, cost, and crowd levels. Summer (June–August) is peak season with the most events but also peak prices, heat, humidity, and crowds
| Month | High (°F) | Low (°F) | Notes |
|---|---|---|---|
| Jan | 32 | 20 | cold & changeable |
| Feb | 33 | 20 | crisp & changeable |
| Mar | 43 | 30 | crisp & changeable |
| Apr | 54 | 40 | cool & changeable |
| May | 66 | 52 | mild & changeable |
| Jun | 77 | 63 | warm & changeable |
| Jul | 81 | 68 | warm & changeable |
| Aug | 79 | 68 | warm & changeable |
| Sep | 74 | 62 | warm & changeable |
| Oct | 61 | 50 | mild & changeable |
| Nov | 48 | 37 | cool & mostly dry |
| Dec | 37 | 27 | crisp & changeable |