We all know it's Valentine's Day, so let's not waste one on that.

1. Date Night for Science-Lovers: Lexington High's annual Science Fair is open to the public from 7:30 to 8:30 p.m. tonight in the field house at Lexington High School.

2. Last-Minute Flowers at Minuteman: In the market for a floral arrangement? Swing by the Flower Shop at Minuteman High School, open from 10:30 a.m. to 1:30 p.m. today.

3. Dealing with Debt: Your Rights and the Law: At 9:30 a.m. this morning at the Senior Center, the Council on Aging will present "Dealing with Debt: Your Rights and the Law," a free presentation in which Phil Taylor, a Stoneham lawyer with extensive experience in debt collection and in providing advice to individuals will speak.

4. Goals, Budgets and Reports before School Committee: The Lexington School Committee meets at 7:30 p.m. tonight at the Town Office Building and its  agenda includes the interim report from the Estabrook Task Force, a vote to approve fiscal 2013 system goals, a discussion of the FY13 budget and vote to approve FY13 operating and capital budgets.

5. Might Rain Tonight: Should be mostly cloudy today, with a high near 46 and a "chance of drizzle" after 5 p.m., according to the National Weather Service, which predicts a chance of rain after 9 p.m. with a low of 30 and possible flurries around 5 a.m.