Not knowing any better then, I have exposed various color films in extreme conditions - extreme temperatures and humidity over very long periods of time, and have seen any issues as a result. B&W film will probably be even more tolerant. Of course now I know that the publications for these films state, "High temperatures or high humidity may produce unwanted quality changes. Store unexposed film at 24°C (75°F) or lower in the original sealed package. Always store film (exposed or unexposed) in a cool, dry place. For best results, process film as soon as possible after exposure."
See
Storage and Care of KODAK Photographic Materials Before and After Processing