Pick up the Phone
If you've ever wanted to know whether the snow has melted yet on the trail you're headed to or if the flowers are blooming yet, don't overlook an obvious resource. All of the national parks have phone numbers and email addresses that you can use to contact them and find out the answers to such questions. Rarely can you find out that sort of up-to-date information on a web page, but keep in mind that the answers are only a phone call away.
Here are the contact details for the three national parks near me. I'd advise you to track down this info the places you frequent and keep it handy.
Phone - 360-569-2211
Email - firstname.lastname@example.org
Phone - 360-565-3130
Email - email@example.com
Phone - 360-856-5700
Email - firstname.lastname@example.org