Dec 22, 2012 9:15 PM by John Patrick
TUCSON - Warm temperatures greet southern Arizona for the start of the holiday weekend but changes are on the way.
Tucson topped out 70s for the second straight day as high pressure held strong to start the weekend. According to Meteorologist John Patrick, a cool down starts tomorrow as out ridge breaks down and moves east. Highs for Sunday will drop back into the mid 60s under generally sunny skies with a SSE wind at 5-10mph.
A cold front moves in on Christmas Eve further dropping the temperatures and increasing the cloud cover. There is a slight chance to see a few light showers on Monday as the cold front passes through the region, however, the bulk of the precipitation will stay in northern Arizona with this system. Daytime highs on Christmas day will be stuck in the upper 50s and low 60s for the Old Pueblo, about 5 below average for Christmas.