Remember the last time temperatures were in the 40s this late in the season?

Why did we drop to the 40s this far into Spring? (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

HOUSTONRECAP OF THE WEEKEND

If you woke up Sunday morning, stepped outside with your cup of joe, and were met with a downright chilly north wind, you weren’t the only one.

That’s because Saturday evening was packed full of crazy weather.

Houston and several surrounding counties were under a Tornado Watch during the afternoon, with a line of storms that dumped heavy rain, and hail, and produced some gusty conditions. We also dropped from 82° to 60° in a matter of minutes as rain-cooled air poured in.

But behind all of that messy wet weather, was a strong cold front.

That cold front filtered in even more cold air overnight Sunday, as we barely stayed at 51° for a low.

A high-pressure system is working its way in behind that cold front.

The solid black lines represent isoheights: lines of constant height in the upper atmosphere that showcase where ridges (high pressure) and troughs (low pressure) are (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

This high will keep us in northerly winds for at least 24 hours as it continues sliding to the southeast across Texas.

EXPLAINER

High pressure compresses air down to the surface, limiting cloud growth since a parcel of air needs to rise to form a cloud.

As we headed to bed Sunday night, cloud cover began to decrease further throughout the night.

If the winds can drop below 10 mph this evening, the clearing skies will lead to additional radiational cooling.

This means that heat from Earth’s surface will escape back into space, effectively cooling us down even more.

Clear, calm nights result in cooler temperatures (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

So, with that being said, Monday morning when you woke up, you may have noticed that it was even cooler than Sunday morning!

Here’s what we saw for Monday morning’s low:

Chilly temperatures plagued SE Texas Monday morning (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

It felt more like WINTER than Spring! Now THAT is chilly compared to Sunday morning.

You may not want to put those jackets away just yet; we’ll do it again on Tuesday morning as well.

Below average low temperatures until Thursday (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

QUESTION

When is the last time or latest day that Houston has seen 40° temperatures this late in the season?

Well, after searching through a lot of data, I’ve come up with an answer...

It’s not uncommon to see these chilly temperatures this far into the Spring season.

Since the weather pattern is usually still active throughout the season, we can still see 40° temperatures even into the first days of May.

It's not uncommon to see 40° temperatures this far into the Spring season (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

Typically, we don’t see temperatures dip below 50° once we get halfway through May, so we only have just over a month before we can say goodbye to such cool lows.

I also want to point out that in my search, I even saw temperatures in Houston reach BELOW 40° during April in previous years. Thankfully we won’t be as cold - sorry winter lovers.