Five Things You Need to Know: July 18

 1. Get ready for a “hot one.” The temperature is expected to climb into the 80s, with not much relief at night, with a low of 70 degrees, according to the National Weather Service. A great day to spend on the water or at the beach. Come to think of it, an indoor skating rink might be the ticket to happiness today.

 2. There is a fair in the air: the 167^th Barnstable County Fair runs through July 23. Rides, sheep shearing, bee hives, arcade, fried food and musical acts.

3. If you are a mermaid or know a mermaid, shop at .

4. Learn abou the Native Americans on Cape Cod. Click for more information about the Wampanoag and their survival skills.

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