August 20th is also usually a good time to apply crabgrass or weed control if necessary. Be sure daytime temperatures are no higher than the low 80s. 70s are more ideal. Look for a still day with no rain in the forecast for 24 hours. Wait 2 weeks to seed after applying weed or crabgrass control.
The time to reseed your lawn is fast approaching. The ideal time to seed your lawn is usually between August 20th and September 20th. Look for the nighttime temperatures to be in the low to mid 60s.