You can plant your beet seeds 3 weeks before your last frost date, and again about 2 weeks after the frost date for a second crop. Your seeding and spacing are somewhat dependent on how you plan on using your beets.
Philadelphia: Annual Weather Averages. July is the hottest month in Philadelphia with an average temperature of 26Â°C (79Â°F) and the coldest is January at 2Â°C (36Â°F) with the most daily sunshine hours at 10 in July. The wettest month is July with an average of 114mm of rain.
The average surface water temperature in Philadelphia is rapidly decreasing during October, falling by 8Â°F, from 68Â°F to 59Â°F, over the course of the month. Average Water Temperature in October