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False Fall and Second Summer, What’s Going on With U.S. Weather?

False Fall and Second Summer, What's Going on With US Weather?

The concept of “False Fall” and “Second Summer” could never be more evident than what’s happening in 2024. The year is turning out to be a meteorologist’s nightmare, with the U.S. experiencing peculiar weather patterns in the last few months, and it’s not about to end. What with California getting dined and dusted with snow, the preview of an early fall is no reason to celebrate because, according to AccuWeather, parts of the Northeast will see thunderstorms clashing with temperatures in the 90s. What exactly is going on with U.S. weather, and what’s the reason for the extremes.

The Emergence of False Fall

Capitol Building during Autumn
Capitol Building during Autumn. Image by Qingwa via Depositphotos

As the summer season begins to wane, many parts of the United States are experiencing a peculiar weather pattern: a brief dip in temperatures followed by a resurgence of summer-like heat.

According to reports in AccuWeather, the Midwest and Northeast have experienced cooler-than-average temperatures, prompting expectations of an early fall. With temperatures 20 degrees less than average, it does feel like Fall rather than late summer. In places like State College, Pennsylvania, the temperature dropped to 49 degrees Fahrenheit on Tuesday—the lowest August temperature recorded since 2000. The expectations of an early fall have prompted the term “False Fall” to trend on social media.

False Fall: A Nationwide Phenomenon

Fall map, Farmer's Almanac 2024
Fall map, Farmer’s Almanac 2024. Image created via Canva Pro. Fall Map: Source Farmer’s Almanac

False Fall isn’t just confined to the northern states; it’s a nationwide occurrence. This brief remarkable period is often followed by a return to warmer weather, leaving people wondering if Fall is here or if summer is making a comeback.  Even Starbucks got in on the fall fever, bringing its famed Pumpkin Spice Latte back to United States menus two days earlier than in 2023.

The Science Behind False Fall

Church in Stowe town at autumn
Church in Stowe town during autumn in Vermont, USA. Image by haveseen via Depositphotos

According to Jesse Ferrell, an AccuWeather meteorologist, there’s no strict definition for False Fall. It typically occurs when a hot period is interrupted by a temporary excellent spell, followed by a return to warmer temperatures. This back-and-forth can happen several times between August and November, especially in regions that experience distinct seasonal changes. While the overall trend is a gradual cooling as we transition into Fall, these fluctuations can make the season’s arrival feel erratic.

The Return of Second Summer

Fall Map AccuWeather
AccuWeather Fall Map 2024. Source: Facebook, Upload: AccuWeather

It seems Mother Nature is trick or treating the U.S. After California got dusted with snow and cooler weather, the summer heat is set to make a return, prompting the emergence of the term “Second Summer.” This weather phenomenon brings a resurgence of unseasonably warm temperatures, often making it feel like summer is making an unexpected return. For example, in the D.C., Maryland, and Virginia region, after a week of comfortable temperatures in the 80s, a heat spike pushed temperatures back into the 90s, with heat index values climbing even higher. This hot and humid weather can persist for several days, giving people a false sense of summer’s return.

Northeast Set to Experience Renewed Summer Heat

Philadelphia Skyline
Philadelphia Skyline. Image by Sborisov via Depositphotos

In the Northeast and Midwest, the recent cool snap will soon give way to a warming trend, with some areas expected to experience a summer heat surge. Philadelphia, for instance, experienced near-record highs in early September last year, followed by a remarkable period that coincided with the official start of Fall. However, Second Summer quickly reversed the trend, bringing back warmer temperatures and disappointing those who had already embraced the fall season.

According to the latest reports on AccuWeather, “The hottest areas through midweek will extend from the western slopes of the Appalachians to the lower part of the mid-Atlantic coast, including Pittsburgh, Philadelphia and Washington, D.C., where it will feel like the middle of summer with highs reaching the mid-90s.”

The Impact on Daily Life

A rainy day in Times Square
A rainy day in Times Square. Image by Tupungato via Depositphotos

The unpredictable nature of False Fall and Second Summer can have a significant impact on daily life. People may find themselves constantly switching between jackets and t-shirts, while farmers and gardeners must contend with the effects of these fluctuating temperatures on crops. The return of summer-like heat can also bring increased risks of severe weather, such as thunderstorms with damaging winds, heavy rainfall, and hail.

The West Coast Joins the Action

Sundial Bridge, Redding, California
Sundial Bridge, Redding, California

False Fall isn’t limited to the eastern half of the country. On the West Coast, cities like Redding, California, that have been dealing with extreme heat since early June are now experiencing a break in the heat, with temperatures dropping into the 70s. However, this respite may be short-lived as the cycle of warm and cool periods continues.

East River, Colorado
East river in autumn Colorado. Image by Kwiktor,

The increasing prevalence of False Fall and Second Summer may be linked to broader changes in global weather patterns due to climate change. Yes!! As much as we don’t wish to use the word “climate change,” due to conflicting debate, it invariably is and possibly the closest reason to what’s going on with the weather.

 As the planet warms, the predictability of seasonal transitions decreases, leading to more extreme and variable weather. While these events have always occurred to some extent, their frequency and intensity may be on the rise.

Navigating the Seasonal Rollercoaster

Lightning with dramatic clouds on United States Capitol Building in Washington DC USA
Dramatic clouds on United States Capitol Building. IMage by Photovs via Depositphotos

As we continue to experience these unusual weather patterns, it’s essential to stay informed and prepared. Whether you’re enjoying the last few days of warmth or eagerly awaiting the cooler days of Fall, understanding the dynamics of False Fall and Second Summer can help you navigate the unpredictable nature of U.S. weather. Regardless of how false an early fall or how hot a second summer, autumn will come, and sooner or later winter, and a severe one at that, is what the Farmer’s almanac is predicting, but that’s another story. What do you think? What could be the reason for the unusual weather, or is it the new normal?
Check out what the Farmer’s Almanac has forecasted for Fall 2024.

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