starting seedling without lights

[Ms. Jitomate]

I am in Pasadena, California. If I start tomato seedlings now, do I really need to put them under lights? Right now in January, our highs are in the 60's and our lows are in the 40's and we are averaging rain about once or twice a week, so we have lots of sunny days. This will be my first attempt at tomatoes. I did start sweet and hot peppers indoors last year with great success. My last frost date is Feb. 21.