The average annual temperature in Phoenix increased by 4.4 degrees from 1970 to 2023, according to a new analysis by Climate Central. Why it matters: A 4-degree temperature difference can be a ...

A high pressure system over the Southwest has pushed temperatures unseasonably high, more than 15 degrees above normal for March. On average, Phoenix reaches 100 degrees for the first time in ...

Those donning winter sweaters last week were in sleeveless shirts on Tuesday in places like San Francisco, Los Angeles and Phoenix, where temperatures were 10 to 20 degrees above average for this ...

Break out the shades and sunscreen. This week is going to be a warm one. Meteorologists with the National Weather Service in Phoenix said the weather will be warming up earlier than expected ...