How Many Days Has Houston Been Above 100 Degrees

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Oh, man. So, I remember this one summer—must've been 2011, the year of all years for Houston heat—and I was trying to move a sofa into my third-floor apartment. No elevator, naturally. I swear, by the time I got to the top landing, I thought I was hallucinating. The sweat, folks, it was not just 'sweat.' It was like I had jumped in a pool and then put on my clothes. My buddy was like, "Dude, you look like a melted popsicle," and I just sputtered, "This ain't a summer, it's a heat dome!" And that, my friends, is when you start to wonder: exactly how many days does Houston get that darn hot? It feels like forever, but let's dive into the actual numbers. Trust me, it's a wild ride through the temperature charts, and you'll wanna know this info so you can properly complain to your friends about the weather.


Step 1: Getting the Lowdown on Houston's Heat Wave History

First things first, you gotta know where they get the official numbers. It's not just some random dude's backyard thermometer (though that'd be funny). The main, official spot for measuring Houston's weather is the Bush Intercontinental Airport (IAH). We're talking Fahrenheit here, not that fancy Celsius stuff. When we talk about days, we mean the high temperature for the day clocked in at triple digits.

How Many Days Has Houston Been Above 100 Degrees
How Many Days Has Houston Been Above 100 Degrees

1.1 Why is a Big Deal

In Houston, hitting that mark is like the city's alarm clock going off for real summer. It's not just heat, it's the humidity—that sticky, muggy air—that makes it feel like you're swimming through soup. But for the record books, we focus on the straight-up air temp. Believe it or not, because of that Gulf Coast breeze and all that moisture in the air, Houston doesn't actually hit as often as some other Texas towns, like Dallas or Austin. We get the humidity tax instead. But when she decides to crank up, she really cranks up. We're talking historical heat that makes you consider living in a giant ice cube.

1.2 The All-Time Championship Year

If you're looking for the undisputed, heavyweight champion of Houston heat, you gotta look at 2011. That year was a total beast. It's the benchmark for "OMG it's hot." Before the latest summer scorchers, 2011 set a ridiculously high bar for misery.

  • The biggest record you need to know: 2011 had 46 days where the temperature hit or higher at IAH. That's over a month and a half! That year also had the all-time longest consecutive streak of triple-digit temps: 24 days in a row! That's almost a whole dang month without a break. Talk about a brutal summer.


Step 2: Breaking Down the Baddest Heat Streaks

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It's one thing to have a few hot days scattered around, but those back-to-back streaks are what make life in Houston feel like a test of survival. You wake up, it's at 6 AM, and you just know you're in for another sweat-fest.

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2.1 The OG Scorcher: 1980

Before 2011 came along and stole the thunder, the summer of 1980 was the one that everybody talked about. It was the yardstick for heat. Folks still tell stories about it.

YearTotal Days (IAH)Longest Consecutive StreakNotes on the Heat
201146 Days24 Days (The Record)Total meltdown year. A legendary heat wave.
198032 Days14 DaysThe classic 'worst-ever' summer for a long time.
2023Approx. 23 Days23 Days (2nd Longest)An absolute sizzler, came super close to 2011's streak!

2.2 The Newcomer: The 2023 Heatwave

Hold onto your hats, because 2023 came in hot, literally. It was a serious contender, and it showed that the older records are definitely in danger of being broken.

  • In 2023, the city had a 23-day consecutive streak of or higher temperatures at Bush Intercontinental Airport. That is wild. They almost tied the all-time record set in 2011! A little tropical system came through and gave just enough cloud cover to keep the temp at on the 24th day, breaking the streak. Talk about a close call! It was a photo finish that no one wanted to win. The total number of days for that year was also way up there, hovering around the 23-day mark, making it one of the top three hottest summers ever recorded. That's a lot of A/C bills, y'all.


Step 3: Why Houston Gets So Dang Hot (A Simple Science Breakdown)

So, what's the deal? Why does Houston turn into a broiler oven sometimes? It ain't just bad luck. It's a mix of a few things that come together to create a heat sandwich, and we're the unfortunate filling.

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3.1 The Heat Dome Situation

You hear about this on the news a lot, and it's a real thing. It's called a "heat dome," which is just a big, fancy-pants term for a large area of high atmospheric pressure.

  • This high pressure acts like a lid on a pot, trapping hot air underneath it. It makes the air sink, and when air sinks, it warms up. It also keeps out any cool fronts or rain that might try to sneak in and cool things down. It's a huge, invisible bully.

3.2 Our Sweet, Soupy Gulf Air

The Gulf of Mexico is right there, and while the breeze is nice sometimes, it also brings a ton of moisture. This leads to the famous (or infamous) Houston humidity.

  • Italicizing this next part because it's crucial: The high humidity means your sweat doesn't evaporate easily. When sweat can't evaporate, your body can't cool itself efficiently. So, a day with high humidity feels like or even more! That "feels like" temperature is called the Heat Index, and for Houston, it’s always cranked up to 11. Don't mess with the Heat Index, it's a real danger.


Step 4: A Simple How-To for Surviving Triple-Digit Days

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You can't change the weather, but you can change how you deal with it. Here’s my no-nonsense, Houston-tested guide to not melting into the sidewalk.

4.1 Hydration: Don't Be a Dummy!

This is the big one. Your body is losing water faster than you think. You need to be constantly sipping.

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  • 1.1 Ditch the Sugary Stuff: Soda and sweet teas are yummy, but they don't hydrate as well as plain water or an electrolyte drink. Seriously, cut back on the pop.

  • 1.2 Set a Water Goal: Keep a big bottle handy. If you don't see it, you forget it. Try to refill it, like, five times a day. Make it a game.

4.2 The A/C Life and the Electric Bill Nightmare

We all love that sweet, sweet air conditioning. It's a lifesaver, but it can also be a wallet-killer.

  • 2.1 Set it and Forget it: Don't crank the A/C down to when you get home. It uses a ton of power and doesn't cool faster. Set it to a sustainable temp, like , and keep it there. Your utility company will thank you (and so will your bank account).

  • 2.2 Block the Sun's Rays: Close those blinds and curtains during the day. Sunlight shining in is basically a free heater. Keep the heat out, y'all!

4.3 When to Go Outside (or Not)

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You gotta run errands or walk the dog, but you need to be smart about it.

  • 3.1 The Early Bird Gets the... Cool Breeze? The coolest part of the day is usually between 6 a.m. and 10 a.m. Do your heavy lifting then.

  • 3.2 Avoid the Peak Cook Time: The absolute hottest part of the day is generally from 3 p.m. to 5 p.m. Don't plan a picnic then. Stay inside, watch some reruns, and chill out.


Frequently Asked Questions

FAQ Questions and Answers

How many days has Houston been above 100 degrees in a single year?

The record for the most days above in Houston (at the official IAH station) for a single year is 46 days, which happened in the brutal summer of 2011.

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What is the longest streak of 100-degree days Houston ever had?

The longest consecutive streak of or higher temperatures recorded in Houston was 24 days, also set during the summer of 2011 (from August 1st to August 24th).

How to check the Heat Index in my area?

You can easily check the current Heat Index (the "feels like" temperature) on any major weather app, a local news website's weather section, or by simply asking a smart speaker, "What is the heat index?"

How to know if I'm getting heat exhaustion?

Look out for heavy sweating, feeling faint or dizzy, nausea, and cold, clammy skin. If this happens, you need to stop your activity, get to a cool place fast, and drink water. Don't ignore the warning signs!

How to keep my car from turning into a furnace?

To keep your car cooler, use a sun shade on the windshield, crack the windows a tiny bit (if safe), and always, always try to park in the shade. That way, you won't feel like you're stepping into a pizza oven when you get back in.

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