Bone-chilling air, rain and even some snow will impact the Great Lakes and Northeast this Halloween, while warmth prevails in the Southwest.
Chilly, Damp and Snowy for the Northeast and Mid-Atlantic
Highs over the Northeast will be 5-10 degrees below average with AccuWeather.com RealFeel® temperatures in the middle 40s to low 50s along the East Coast and mid-Atlantic and the 30s over the Interior Northeast as trick-or-treaters venture out Friday evening.
A strong area of high pressure moving down from Canada will bring a sharp drop in temperatures by the end of next week, but a developing storm may threaten to bring rain and even snow to parts of the region just in time for trick-or-treating.
According to AccuWeather.com Meteorologist Andy Mussoline, "Rain showers could be seen along the I-95 corridor while the interior Northeast could see some wet snowflakes mixing in."
Anyone traveling Friday night should take caution as some roads may be slippery. Trick-or-treaters should consider bringing a sweatshirt or jacket.
While it is certain that chilly air will be in place, there is uncertainty of the timing of a storm system developing off of the mid-Atlantic coast. Be sure to stay tuned to AccuWeather.com for further updates on this storm.
Drier and Cooler for the Southeast
Temperatures will fall to more seasonable values over most of the Southeast while a few rain showers may impact trick-or treaters over central and South Florida.
Warm air during the middle of the week will come to an end as a cold front pushes through the Southeastern states for the end of next week. The front is forecast to move through Florida during the day with a few rain showers.
With the uncertainty of the timing of a storm system off the mid-Atlantic coast, a few showers may impact portions of Tennessee and North Carolina. The remainder of the Southeast is expected to be dry.
Cold, Areas of Snow Over the Midwest
Bitterly cold air is expected across the Great Lakes and Ohio Valley with AccuWeather.com RealFeel® temperatures in the middle 20s to lower 30s with the potential for snow showers.
A strong area of high pressure will come down from Canada and bring very cold air to portions of the Midwest for the end of next week.
Highs over the Great Lakes and Ohio Valley area will run 10-15 degrees below average for the end of October. Elsewhere, temperatures will be seasonable for this time of year.
With the uncertainty of the timing of a storm system off the mid-Atlantic coast, a few rain and snow showers may be seen Friday evening over portions of the Great Lakes and Ohio Valley. There may be some slick spots for anyone traveling.
Warmth to Prevail in the Southwest
The Southwest will benefit from some of the nicest weather across the entire country for Halloween. High pressure will be in control over the Southwestern states bringing in warm air and dry conditions. Highs on Friday will run between 5-15 degrees above average for the end of October.
Rain Lingers Over Portions of the West
A storm system will move towards the West Coast where rain showers are expected to impact portions of Idaho, Washington, Oregon and California.
High pressure will bring pleasant conditions for trick-or-treaters over the Rockies with high temperatures near average for this time of year.
This story was authored by AccuWeather.com Meteorologist Brett Rathbun.