Mild, moister start to fall

Update #672: Fall starts on Monday as temperatures and rain chances rise in the Hudson Valley this week.

Sep 21, 2025

Goodbye summer, hello fall! Comfortable temperatures will usher the new season on Monday.

Despite changing seasons, the week ahead will bring pretty consistent temperatures to the Hudson Valley. Like weeks past, highs will generally range from the lower 70s to the lower 80s.

However, there will soon be a change in the rain department. But it’s uncertain how much will fall.

A slow-moving area of low pressure — part of a weather feature called an omega block — will form over the Midwest, with a muggy and moist southerly flow developing in the East. This disturbance will bring opportunities for beneficial rainfall in the Hudson Valley — as abnormally dry conditions expand nationally.

However, a blocking area of high pressure over southern Canada could suppress some of the stormy weather to the south, making the forecast from Thursday onward more uncertain than normal.

If you have plans later this week, be sure to keep an eye on the forecast as it will change!

Also, an intensifying jet stream over the Pacific Ocean will cause warmer-than-average temperatures to blow across the country from late September into October. For the Hudson Valley, this should mean more nice weather.

Fall is getting warmer. What will this year bring?

Ben Noll

Aug 30

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There’s one tropical storm in the Atlantic as of early Sunday: Gabrielle. Gabrielle is forecast to pass just east of Bermuda on Monday. Other than that, the tropics are pretty quiet. If you’re interested in learning about why, you can read one of my recent Washington Post articles, which explores the counterintuitive concept of how warmer seas can contribute to fewer storms in the tropics.