Adult boll weevils,Anthonomus grandisBoheman were held in two ambient air temperatures (31.1 and 28.9°C) at four different relative humidities (RHs) (35, 45, 55, and 65%) during the oviposition period to determine the influence of these environmental parameters on egg production and hatch in mass rearing size groups and cages. At 31. 1°C the egg production decreased with each increase in RH, but at 28.9°C egg production decreased only above the 45% RH level. Egg hatch decreased above the 45% RH level at 31.1°C and above the 55% level at 28.9°C. Egg production or hatch were not different at 31.1°C and 45% RH and at 28.9°C and 45% RH. Hatched egg production decreased only above 45% RH at both 31.1°C and 28.9°C.