NPS photo Summer: Daytime highs in the mid to upper 90's F (38 C) and night time lows near 70 F (16 C). Late summer afternoons often bring sudden thunderstorms, so an umbrella or rain gear could be helpful. 
NPS image Winter: Daytime highs around 40 F (4 C), and night time lows in the teens (- 10 C). Occasional snow. |
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Last updated: March 31, 2012