The Midwest and Northeast regions of the United States are bracing for a period of fluctuating temperatures throughout the first half of May. Residents can expect a mix of warm and chilly conditions, with the possibility of frost.

Temperature Swings Expected

The initial weeks of May will be characterized by cooler-than-average temperatures, interspersed with brief periods of warmth. This will require residents to be prepared for a wide range of weather conditions and to have appropriate clothing available.

Early May Chill & Potential Frost

This week will begin with a temporary warming trend, but will quickly be followed by a return to colder temperatures. The potential for frost and even freezes is expected, particularly in the early part of the month. Snowfall was recently observed near the Great Lakes.

Brief Warmup Followed by Cold Air

A warming trend will begin in the Midwest on Sunday, spreading to the Northeast and mid-Atlantic by Monday and Tuesday. Temperatures could reach the 70s and even 80s in some locations during this period.

Return of Canadian Air

However, this warmth will be short-lived. A new wave of cold air from Canada is forecast to arrive later this week, causing temperatures to drop and increasing the risk of late-season frosts.

Regional Impacts

The cooling trend will first affect the Plains and Midwest, then spread to the Ohio Valley, eastern Great Lakes, upstate New York, and northern New England. Cities like Chicago will experience a significant drop, from the 70s to the 50s.

I-95 Corridor & Freeze Risk

Along the I-95 corridor, temperatures may struggle to reach the 50s, with some inland areas remaining below 40 degrees. The threat of a freeze is primarily limited to areas that have already experienced them, such as the northern Great Lakes and interior New England.

Looking Ahead

AccuWeather’s long-range forecasts suggest this pattern of warmups and cooldowns may continue around May 10th. However, there are indications that warmer weather may become more consistent in the latter half of May.

Gardening & Water Safety

Gardeners are advised to protect sensitive plants from the impending cold snap. Caution is also advised for anyone considering swimming, as water temperatures remain dangerously low.