Hormones are chemical messengers released from endocrine glands that travel through the blood system to influence the nervous system to regulate behaviors such as aggression, mating, and parenting of individuals. 1  Aggression. 2  Hormones. 3  Parental behaviors. 4  Sex differences. 5  Sexual behavior. 6  Steroids.
San Francisco International Airport Weather Today (1â3 days) Mostly dry. Very mild (max 17Â°C on Tue morning, min 9Â°C on Tue night). Wind will be generally light. San Francisco International Airport Weather (4â7 days) Mostly dry. Very mild (max 19Â°C on Fri afternoon, min 12Â°C on Thu night). Wind will be generally light. 10 Day San Francisco International Airport Weather (7â10 days) Mostly dry. Very mild (max 20Â°C on Tue afternoon, min 13Â°C on Sun night). Wind will be generally light.
Averages for San Francisco in May. May is one of the best times to visit the city, in terms of the weather, with clear blue skies and little fog expected.When packing, take light, summery clothes that you can wear in layers, with a warmer jacket.here are 11 hours of sunshine expected per day throughout the month. Be sure to pack a waterproof jacket, though, as there is an average of 18 mm of rain anticipated over 4 days throughout the month. If you enjoy going in the sea, the average temperature throughout May will be 12 C.