Mid-May through mid-September; July for warmest weather, September for Klondike Road Relay and reduced crowds. The full visitor season runs May-September when the White Pass & Yukon Route train operates, the Days of '98 Show runs daily, and hiking trails are accessible. July offers peak warmth (avg high 65°F). May and September are shoulder months with lighter cruise crowds while most attractions remain open
| Month | High (°F) | Low (°F) | Notes |
|---|---|---|---|
| Jan | 28 | 21 | cold & wet |
| Feb | 29 | 21 | cold & wet |
| Mar | 32 | 24 | cold & wet |
| Apr | 42 | 35 | crisp & wet |
| May | 52 | 43 | cool & changeable |
| Jun | 62 | 51 | mild & wet |
| Jul | 65 | 56 | mild & wet |
| Aug | 64 | 55 | mild & wet |
| Sep | 56 | 48 | cool & wet |
| Oct | 44 | 37 | crisp & wet |
| Nov | 32 | 26 | crisp & wet |
| Dec | 29 | 21 | cold & wet |