Rusting of steel also is greater at humidity levels above 50%. If the basement is cooler than outside temperature, and that is virtually certain in the Summer, the relative humidity in the basement will be higher than outside.usting of steel also is greater at humidity levels above 50%. If the basement is cooler than outside temperature, and that is virtually certain in the Summer, the relative humidity in the basement will be higher than outside.
Los Angeles: Annual Weather Averages. July is the hottest month in Los Angeles with an average temperature of 22Â°C (72Â°F) and the coldest is January at 13Â°C (55Â°F) with the most daily sunshine hours at 13 in August. The wettest month is January with an average of 79mm of rain.
Average monthly weather in Los Angeles, United States of America. 1  Los Angelas has a Mediterranean climate with nearly no rain in summer. In August, the average high temperatures are 29 degrees Celsius (84 Â°Fahrenheit) and lows of 18 degrees Celsius (65.6 Â°F). Winters are mild, with average high temperatures of 20Â° C (68 Â°F) and lows of 9Â°C (48 Â°F) with some occasional rain.