Okay, we San Diegans have very little, weather-wise, to complain about... so I'll call this mere observation.
Check this out... yesterday morning I woke up to a low of 26.2 on my outside thermometer. Come midday, we were at 71.5 - a whole 45-degree difference between low and high!
(Then this morning there was ice on the grass at Nolan's school and a sidewalk at Kennedy Park in El Cajon was a sheet of ice from the early morning lawn watering that spilled over onto the street. Brrrr...)