Long Beach Custom Search   Around Long Beach you don’t get a lot of precipitation. The month with most of the rain is September, and February meanwhile is the driest month. The warmest time of the year brings highs in the 50's to Long Beach with nighttime lows in the 40's. Through the wintertime the highs are commonly in the 20's, and nighttime lows through the wintertime for Long Beach tend to be in the 10's.            Map Detailed Map Weather Local weather forecast These outdoors activities are available near Long Beach.