Forecast for First Week of Fall
September 24, 2013; 3:16 AM
Many have been marking their calendars for the first official day of autumn. With the start of a new week, Sept. 22 has arrived bringing a variety of conditions across the country.
Although the season will start with fall-like temperatures in some places, other regions will have warmer temperatures clinging to the first few days of autumn with sunshine.
Below are details for regions across the country for the first official week of fall.
Northeast and Midwest: Cool, Then Warming
In the wake of a cold front that moved through this past weekend, there will be a brief dip in temperatures from the Great Lakes to the Northeast.
Cities like Detroit, Chicago, Buffalo and Washington, D.C. will be at least a few degrees below average. Syracuse and Pittsburgh had highs 5 to 10 degrees under the average for Monday.
After some early fog, the sunshine broke out for the start of the workweek.
As the week progresses, temperatures will be on the rise, making it into the upper 70s and even 80s across the mid-Atlantic and Ohio Valley.
Southeast and Gulf Coast: Summer Returning
The sweeping cold front to end the last few days of summer dumped large amounts of rain on the region.
Areas like Shelby, N.C., New Orleans, La., and Houston, Texas, surpassed the 3-inch mark in only 24 hours.
Much of the South will be starting fall off with sunshine from Virginia through the Tennessee Valley.
For the first full day of fall, the Gulf Coast will be dreary with lingering showers and clouds. A low pressure will slide along the Gulf through the middle of the week, bringing periods of heavy rain to the Southeast.
From New Orleans eastward through northern Florida as well as southern Alabama and Georgia are the most at risk for heavier rain through Thursday. However, sunshine will break out in many areas later in the week.
After a cool start, temperatures will be on the rise for the middle of the week, making it only a brief feeling of fall. Highs on Wednesday will range from the middle 80s to the lower 90s.
Southwest and South Central: Dry and Warm
Sunshine is expected for the majority of this area, as drier air settles in from the west. Temperatures will be slightly below normal across the Southwest for the first full day of autumn, but warm to near normal by midweek.
Temperatures across Oklahoma and Texas will be close to average early in the week, then warm to above normal by Wednesday with some areas reaching 90..
Sunshine will be plentiful from southern California to Texas and Oklahoma through midweek.
Northwest, Rockies and Northern Plains: Rain, Storms and Snow
Cold fronts will sweep through these regions for the start of autumn, bringing the chance for a wet start to the week.
High pressure will keep conditions dry across the Midwest and western Great Lakes Monday.
Showers and thunderstorms will move into the northern Plains to start the week with cooler temperatures as a cold front moves through by Tuesday.
The Rockies will have a very up-and-down week with more rain in the Boulder, Colo. area Monday. However, a few dry days with temperatures in the upper 70s will follow for the middle of the week.
The Northwest will be feeling the autumn-like chill for this first week. Temperatures will remain in the lower 60s in most areas through middle of the week as another cold front brings rain and a cool wind to the region.
As described in more detail here, this will bring cold air to the tops of the mountains, making for some early snowfall in the higher elevations.