80 dew point I would expect thunderstorms imminently. Low to mid 70s is common in the southeast in the summer. High 70s is possible, but it will usually storm if it gets there.
You can add the temp and dewpoint in the summer to get a quick comparison (of days in your area) of how suck the days are for running. Relative humidity is only an important measure for farmers.
Here are some current dew points
Jacksonville 71
Atlanta 69
Portland, ME 63
New Orleans 74
Houston 72
Phoenix 56
Salt Lake City 41
Seattle & San Fran 52
San Diego 61
Just to give an idea what is typical in the summer. If someone tells me the dew point is 80, I'd just assume they don't know what they are talking about.
The highest substantiated dew point in US is 88 in Iowa, I believe. There have been a few unsubstantiated dew points of 90 including one in Minn. The highest worldwide is 95 in Saudi Arabia in 2003. The heat index was 176 and the temp was 108.
We had a week here in 2023 when the highs were up around 107 and 109 and even being in good shape I could only run about a quarter mile at a time.
Doubtful. Thats a dew point of 80°. I don't know where you live, but that would be rare anywhere in the US.
And you would be wrong.
It’s pretty rare in my experience. But it isn’t like the 76-78 dewpoint and 85+ degrees temps that is pretty common is much better. And even the 72-75 combos you get at 5am aren’t exactly great for sustained efforts
Double down on stupid will ya? Relative humidity isn't the same as Dew Point. It's rare to see a 80° Dew Point in the US.
Thank you, Malmo. I was going to jump in on the same issue and decided not to bother, but then saw your response. :) How many posters do we see like "Sally vv" who have no idea what relative humidity really means and reference the day's high temp and the day's high relative humidity % as if they were happening at the same time? Like 98% of them? Drives me nuts. Then you get this person doubling-down because, umm, she (?) has no idea what's going on.
Double down on stupid will ya? Relative humidity isn't the same as Dew Point. It's rare to see a 80° Dew Point in the US.
Thank you, Malmo. I was going to jump in on the same issue and decided not to bother, but then saw your response. :) How many posters do we see like "Sally vv" who have no idea what relative humidity really means and reference the day's high temp and the day's high relative humidity % as if they were happening at the same time? Like 98% of them? Drives me nuts. Then you get this person doubling-down because, umm, she (?) has no idea what's going on.
You're welcome. Every year we go through this and every year we have a substantial confusion with Relative Humidity, Dew Point and the cornfield effect.
I'll dig up the first post I made about 25 years ago. I might even repost my satire letter I "wrote" to the IAAF about the error of letting Mombasa host the World XC.
Thank you, Malmo. I was going to jump in on the same issue and decided not to bother, but then saw your response. :) How many posters do we see like "Sally vv" who have no idea what relative humidity really means and reference the day's high temp and the day's high relative humidity % as if they were happening at the same time? Like 98% of them? Drives me nuts. Then you get this person doubling-down because, umm, she (?) has no idea what's going on.
You're welcome. Every year we go through this and every year we have a substantial confusion with Relative Humidity, Dew Point and the cornfield effect.
I'll dig up the first post I made about 25 years ago. I might even repost my satire letter I "wrote" to the IAAF about the error of letting Mombasa host the World XC.
I was going to do a 5k tomorrow morning to test my fitness but it will be around 77F, full sun, no wind. Tempted to leave it for another week?
It’s only 23c and 61% humidity so not that bad. You will know you summer fitness you will be able to take a few seconds off per km/mi for you actual race pace
23 C and 61% is around optimal racing conditions IMO, especially for races HM or shorter. I think there are a lot of people here who have never run in actual heat.
actual heat is anything above 95F, near or above body temperature.
humidity may force you to go slow, to avoid generating heat, but won't put your life in much danger if it's well below body temperature, and you aren't stupid.
Above body temperature it is rarely humid. You have to know what you're doing to avoid trouble.There's been people living where it gets above 120 for thousands of years, where 95 is nothing, very doable but they know how.
Yeah - where I live it might be 82 and 95% humidity. That is pretty rough to race in.
Doubtful. Thats a dew point of 80°. I don't know where you live, but that would be rare anywhere in the US.
For some reason people on the Internet like to brag about living somewhere with miserable wheather, so much so that they lie about it to make it sound even worse than it is.
Whenever someone brags about the high temperature and humidity, without a fail they're stating the highest temperature and highest relative humidity of the day, even though obviously they don't occur at the same time.
Doubtful. Thats a dew point of 80°. I don't know where you live, but that would be rare anywhere in the US.
For some reason people on the Internet like to brag about living somewhere with miserable wheather, so much so that they lie about it to make it sound even worse than it is.
Whenever someone brags about the high temperature and humidity, without a fail they're stating the highest temperature and highest relative humidity of the day, even though obviously they don't occur at the same time.
What i listed above - the 82 and 95 - was NOT the high temp and highest humidity. The 82 was the LOW temp for the day.
For some reason people on the Internet like to brag about living somewhere with miserable wheather, so much so that they lie about it to make it sound even worse than it is.
Whenever someone brags about the high temperature and humidity, without a fail they're stating the highest temperature and highest relative humidity of the day, even though obviously they don't occur at the same time.
What i listed above - the 82 and 95 - was NOT the high temp and highest humidity. The 82 was the LOW temp for the day.
Now that you said 82 (temp) was the low of the day....which day?
Not saying you can't have a dew point of 80, but it's so rare, even in Houston, its not worth talking about without a pre-qualifyer something like "I remember one day in 2023 ..."
The OP asked if it was too hot to run on a perfect day (77 61%).
You said "where I live it could be 82 95 %"
After it was explained to why that statement was doubtful you should have "oh, maybe I got my numbers mixed up. Thanks." Then you should have taken the time to research and learn. Thats a good thing. You didn't. You kept coming back with more BS.
If you want I can give you a link to Houston's historical daily weather data for as many years that you want. Then you could point to a day that had a Dew Point of 80..
But thats far, far away from the original question. 77/61 is so perfect that Lou Reed would suggest you go to the park with a bottle of Dubennet and ice instead.
77/61 even with the bright Sun beating directly down on you is just fine. If the Sun is at a low altitude, let's say 6-7 pm, it will be ideal.
So stop. You got a lesson in heat/humidity/dew point and if Deno starts a thread "songs about parks and picnics" you can contribute on that one, as well.
[edit] correction. Lou Reed had Sangria in the park. He had Dubonnet and ice at a small Cafe.
This post was edited 14 minutes after it was posted.
Runner signs up for a race that starts at 8am in the summer.
Runner wakes up and runs their training run at 6am in the summer. Daily runs. Speed work. Whatever.
Runner complains about warm and sunny its going to be for their race.
You'd think logic would tell you that you probably want to do at least some runs later in the day when its hotter and the sun is directly overhead so as to better prepare you for race day....
Runner signs up for a race that starts at 8am in the summer.
Runner wakes up and runs their training run at 6am in the summer. Daily runs. Speed work. Whatever.
Runner complains about warm and sunny its going to be for their race.
You'd think logic would tell you that you probably want to do at least some runs later in the day when its hotter and the sun is directly overhead so as to better prepare you for race day....
I ran a 10 mile race in Vienna VA at 8am. July 1980. I ran 52:00. Two people died that day. There is nothing you can do to prepare for a day like that.
I was 2nd at Peachtree that year on one of its hotter days
I take summer off from racing because times are really the only thing I have to shoot for unless I find a low level race to compete for placement in
Yeah as a very tall runner I seem to get hit by heat far more than my similar ability shorter team mates. I don't even bother trying to race in summer anymore, use the time to build the base, tempos, explore the trails and lots of strides - then crush the late autumn/winter races.
What i listed above - the 82 and 95 - was NOT the high temp and highest humidity. The 82 was the LOW temp for the day.
Now that you said 82 (temp) was the low of the day....which day?
Not saying you can't have a dew point of 80, but it's so rare, even in Houston, its not worth talking about without a pre-qualifyer something like "I remember one day in 2023 ..."
The OP asked if it was too hot to run on a perfect day (77 61%).
You said "where I live it could be 82 95 %"
After it was explained to why that statement was doubtful you should have "oh, maybe I got my numbers mixed up. Thanks." Then you should have taken the time to research and learn. Thats a good thing. You didn't. You kept coming back with more BS.
If you want I can give you a link to Houston's historical daily weather data for as many years that you want. Then you could point to a day that had a Dew Point of 80..
But thats far, far away from the original question. 77/61 is so perfect that Lou Reed would suggest you go to the park with a bottle of Dubennet and ice instead.
77/61 even with the bright Sun beating directly down on you is just fine. If the Sun is at a low altitude, let's say 6-7 pm, it will be ideal.
So stop. You got a lesson in heat/humidity/dew point and if Deno starts a thread "songs about parks and picnics" you can contribute on that one, as well.
[edit] correction. Lou Reed had Sangria in the park. He had Dubonnet and ice at a small Cafe.
Pull up a chart of August 2024 Houston with low temps for the month. A number of days with lows of 81 and 82. Average dew point of 77 for the month with a high dew point of 84 or 85.
Next time Deno has a Songs about Barbie thread, feel free to participate.
Many people misunderstand humidity and dew point. Most people don't realize that dew point stays in a narrow range each day while the Relative Humidity fluctuates with temperature but the fluctuations are almost three times as large (three times with Fahrenheit, more in Celsius).
You might be right but almost comment is correct about the rarity of dew points of 80 and above. I can only remember one time where the dew point went into the 80s where I live, and it set a record.
Leaving conditions aside, most races are no longer bargains or even fairly priced. Gas and time considerations could come in so you have to factor everything in. You can always try a hard workout yourself but is not the same.