Most of our beds do not currently need regular weed removal because either they contain fall plants that are large enough to block light from new weeds or plants that have died due to the cold weather.
However, the carrots were still small in late November. We had planted the carrots earlier in the fall. The bed containing the carrots had become overgrown. Here are the before and after photos from when we weeded the bed.
It is possible that there were so many weeds still growing due to the warm fall days we had, with highs that were 50-80 degrees Fahrenheit. The average high in Philadelphia for November is only 50-60 degrees Fahrenheit. Weeds that would have died from average fall weather stayed alive due to the above average temperatures. Weeds that grow annually would have died from multiple frosts if not for the warm temperatures.