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Relative humidity is misleading because it's dependent upon temperature. 40 degree air temp with a 35 degree dew point is 82% RH. 90 degree air temp with a 70 degree dew point is only 52% RH. The latter is humid, and the former is dry.
Relative humidity is misleading because it's dependent upon temperature. 40 degree air temp with a 35 degree dew point is 82% RH. 90 degree air temp with a 70 degree dew point is only 52% RH. The latter is humid, and the former is dry.
Don't ask me to do math! I just know when it's too humid and when it's not!
In General (I didn't read the whole thread) I'd say most anywhere West of the Cascade/Siskiyou Mts., south to the Laguna Mts. Then anywhere East of the Rocky Mountains and it's satellite mountain ranges. At least part of the year anywhere along the West Coast will have issues with humidity were you need to protect vehicles and houses from moisture. You will also need to keep lawn furniture, toys, bicycles, etc. protected, and cities/schools need to protect and maintain playground equipment. The same goes for cities and towns from the Midwest eastward to the East Coast.
The areas between the two main mountain ranges are typically pretty dry and have fewer issues, protection and preparation requirements for high humidity environments. Anything much east of the Colorado Front Range (into states north and south too) is pretty humid at least for a good portion of the year, and so would have to deal with humidity issues. I'd guess there are micro climates all over the country that would be exceptions to this very general geographic explanation.
Where it's really affect housing, mold issues, problems with things staying clean. It becomes something you have to almost gameplan for to some extent.
Is there a reason for your question surferdude, or are you just throwing out a general question for discussion? If you are a surfer I'd guess you live were humidity is an issue, unless you prefer to wind/kite surf only on inland waters.
Relative humidity is misleading because it's dependent upon temperature. 40 degree air temp with a 35 degree dew point is 82% RH. 90 degree air temp with a 70 degree dew point is only 52% RH. The latter is humid, and the former is dry.
Eh I don't agree with this. Dew point describes the amount of moisture in the air, but this thread is about "Where it's really affect housing, mold issues, problems with things staying clean.". Most of these problems are not caused by the air having a lot of moisture, they are caused by the air being fully saturated with moisture and unable to accept more moisture, causing it to remain as a liquid on the surface of things... so relative humidity is in fact the correct measure for that.
Dew point might be correlated with some problems, for example mold grows better at higher temperatures and therefore might be worse at higher dew points, but this is a correlation not a cause. Similarly, high dew points might be less comfortable for being outside but that's not because our bodies don't like moisture in the air, its because when it's hot outside we cool down via sweating, and sweat doesn't work as effectively when the air is saturated with moisture. But again, dew point is a correlation not a cause.
Where it's really affect housing, mold issues, problems with things staying clean. It becomes something you have to almost gameplan for to some extent.
I grew up in the mountains of North Carolina and if the temperature got up to 80 the humidity made us miserable. I live 2 hours south of where I grew up and we live in a county that has to get its water from South Carolina and the Yadkin River to our east and except from ground water we find our area comfortable.
Ground water is a problem here and we first took the advice of the professionals that think putting plactic under the house is the solution. That made the problem worse because the pastic held the water there and did not let the crawl space dry in less wet season. We now have a $2,000 system hooked to our central air that takes excess water out of the crawl space and a pipe that transfers it outside. We have only had this system for a year or so and do not know if we will have to have a Plan C down the road. I imagine the crawl space repair companies make a good living around here.
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