"Five Things you Need to Know Today" is a Patch column that provides readers with essential, daily information at a glance.

1. Today’s forecast calls for chillier temperatures with a high of 38, but maintains sunny skies. The overnight low will be 25.

2. A Big Band Concert will be conducted by the Concord Conservatory Faculty tonight at $8. General admission tickets are $15 at the door and $13 online.

3. OARS, the watershed organization for the Assabet, Sudbury and Concord Rivers, is holding a volunteer training open house tonight at 7 p.m. The event will be held at 680 Hudson Rd. in Sudbury.

4. The Municipal Light Board meets this morning at 8 a.m. at 1175 Elm St., while the West Concord Advisory Board meets at 7 p.m. at the Town House.

5. National Basketball Association player Spud Webb, standing at 5’7”, won the league’s Slam Dunk Contest. Webb’s opponent, Dominique Wilkins, stands 6’8”.