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10 Years of Monthly Average Humidity by Zip Code

December 2022

Last Updated

44,000 Zip Codes

Locations

120 Months

Data Points per Location

Humidity, Dew Point

Weather Metric

Monthly Time Series

Data Type

CSV

File Type

120 data points per zip code, nearly 40,000 US zip codes

Excel Download

10 years worth of monthly humidity history for all US zip codes.

Data set includes Dew Point and Relative Humidity.

Custom requests or want to be sure this is what you are looking for? Use the chat icon in the bottom left of the screen or email us at contact@weatherdatabyzipcode.com with any questions!

A Decade of Valuable, Accurate U.S. Humidity Data

 

The best way to know what you can expect in terms of humidity in a certain location is to look at recent history. This Excel download provides you with nicely formatted humidity records by zip code for each month over the last ten years. As we’ll explain below, this kind of information can be put to use for many different reasons, and it may help your organization make better decisions moving forward.

 

What is the Difference Between Dew Point & Relative Humidity?

 

When looking at humidity information, you are likely to also come across dew point measurements. These are not the same thing, although they are related. As this is a common point of confusion for those who are not meteorologists, it’s important to clear up this question so the humidity data we provide can be used appropriately.

Let’s offer quick definitions of each of these two measurements

  • Relative humidity measures how much moisture is in the air as a percentage of how much moisture the air would be able to hold. So, if the relative humidity is 50%, that means the air is currently holding half of the water it is able to contain.
  • Dew point is the temperature at which the relative humidity would reach 100%. It is expressed as a temperature, so you might see the dew point listed at 50*F for a specific place. That means if the temperature cools to 50%, a RH of 100% will be achieved.
As you can see, the two are closely related, but not quite the same thing. It’s important to look at both, as they can give you a clearer picture together than they can apart.  

What Can You Do with Humidity Data?

 

It’s no secret that humidity can play a major role in human comfort. It’s difficult to do hard, physical labor all day long, for example, if the humidity is high on a summer day. Humidity data can be used for more than just planning how you’ll keep people in your organization comfortable, however, as moisture levels in the air also impact how machinery will work.

For example, humid areas may require equipment to be serviced – and even replaced – more often than in areas with typically dry air. Rather than guessing at these effects and being caught off-guard down the line, you can use this data set to accurately determine how well your equipment will hold up in the areas it is going to be used.

 

Examples of Real World Applications

 

You may already have your own ideas for how you’ll use this humidity data, but here are a few ideas just to help you understand the possibilities –

  • A governmental organization may evaluate humidity levels as a way of knowing when more public health services will be required. Areas with hot, humid summers may have periods when the homeless and other at-risk populations need additional support

  • An office building in a humid city will likely incur greater energy costs as the air conditioning system has to work harder in the summer months to keep the building comfortable

  • A transportation company operating a fleet of vehicles in humid locations will want to pay close attention to rust and other maintenance issues due to moisture in the air

 

Frequently Asked Questions

 

Where can I download weather data?

 

It’s easy to find weather forecasts for the next 10 or 15 days, but it’s much harder to find quality sources of historical weather data. This information can be hugely valuable when making important decisions, so obtain your data from a trustworthy source like Weather Data by Zip Code.

 

Is 75% humidity high?

 

It’s always hard to quantify what counts as “high” for humidity, because that depends on various factors – most notably, temperature. If you experience 75% humidity along with high temperatures, those conditions are likely to be quite uncomfortable for most people. That same relative humidity measurement at a lower temperature, however, could remain perfectly comfortable.

 

Is high or low humidity better?

 

Most of the time, a sweet spot of between 40% and 60% will be the ideal humidity range. If the humidity is too high, humans tend to be uncomfortable and the additional moisture in the air could cause problems for equipment. On the low end, humans are usually pretty comfortable (other than dry skin issues), but the very dry air can again lead to some problems for equipment and machines, such as materials that dry up and crack.

Select Billing Period For Price

$799.95 one-time purchase
$639.96 initial purchase + $90/quarter for data updates
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10 Years of Monthly Average Humidity by Zip Code

December 2022

Last Updated

44,000 Zip Codes

Locations

120 Months

Data Points per Location

Humidity, Dew Point

Weather Metric

Monthly Time Series

Data Type

CSV

File Type

Select Billing Period For Price

$799.95 one-time purchase
$639.96 initial purchase + $90/quarter for data updates
Clear
Our Guarantee
Instant Download
Secure Checkout
Regularly Inspected for Flaws

120 data points per zip code, nearly 40,000 US zip codes

Excel Download

10 years worth of monthly humidity history for all US zip codes.

Data set includes Dew Point and Relative Humidity.

Custom requests or want to be sure this is what you are looking for? Use the chat icon in the bottom left of the screen or email us at contact@weatherdatabyzipcode.com with any questions!

A Decade of Valuable, Accurate U.S. Humidity Data

 

The best way to know what you can expect in terms of humidity in a certain location is to look at recent history. This Excel download provides you with nicely formatted humidity records by zip code for each month over the last ten years. As we’ll explain below, this kind of information can be put to use for many different reasons, and it may help your organization make better decisions moving forward.

 

What is the Difference Between Dew Point & Relative Humidity?

 

When looking at humidity information, you are likely to also come across dew point measurements. These are not the same thing, although they are related. As this is a common point of confusion for those who are not meteorologists, it’s important to clear up this question so the humidity data we provide can be used appropriately.

Let’s offer quick definitions of each of these two measurements

  • Relative humidity measures how much moisture is in the air as a percentage of how much moisture the air would be able to hold. So, if the relative humidity is 50%, that means the air is currently holding half of the water it is able to contain.
  • Dew point is the temperature at which the relative humidity would reach 100%. It is expressed as a temperature, so you might see the dew point listed at 50*F for a specific place. That means if the temperature cools to 50%, a RH of 100% will be achieved.
As you can see, the two are closely related, but not quite the same thing. It’s important to look at both, as they can give you a clearer picture together than they can apart.  

What Can You Do with Humidity Data?

 

It’s no secret that humidity can play a major role in human comfort. It’s difficult to do hard, physical labor all day long, for example, if the humidity is high on a summer day. Humidity data can be used for more than just planning how you’ll keep people in your organization comfortable, however, as moisture levels in the air also impact how machinery will work.

For example, humid areas may require equipment to be serviced – and even replaced – more often than in areas with typically dry air. Rather than guessing at these effects and being caught off-guard down the line, you can use this data set to accurately determine how well your equipment will hold up in the areas it is going to be used.

 

Examples of Real World Applications

 

You may already have your own ideas for how you’ll use this humidity data, but here are a few ideas just to help you understand the possibilities –

  • A governmental organization may evaluate humidity levels as a way of knowing when more public health services will be required. Areas with hot, humid summers may have periods when the homeless and other at-risk populations need additional support

  • An office building in a humid city will likely incur greater energy costs as the air conditioning system has to work harder in the summer months to keep the building comfortable

  • A transportation company operating a fleet of vehicles in humid locations will want to pay close attention to rust and other maintenance issues due to moisture in the air

 

Frequently Asked Questions

 

Where can I download weather data?

 

It’s easy to find weather forecasts for the next 10 or 15 days, but it’s much harder to find quality sources of historical weather data. This information can be hugely valuable when making important decisions, so obtain your data from a trustworthy source like Weather Data by Zip Code.

 

Is 75% humidity high?

 

It’s always hard to quantify what counts as “high” for humidity, because that depends on various factors – most notably, temperature. If you experience 75% humidity along with high temperatures, those conditions are likely to be quite uncomfortable for most people. That same relative humidity measurement at a lower temperature, however, could remain perfectly comfortable.

 

Is high or low humidity better?

 

Most of the time, a sweet spot of between 40% and 60% will be the ideal humidity range. If the humidity is too high, humans tend to be uncomfortable and the additional moisture in the air could cause problems for equipment. On the low end, humans are usually pretty comfortable (other than dry skin issues), but the very dry air can again lead to some problems for equipment and machines, such as materials that dry up and crack.

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What Our Happy Clients Say

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Being able to download the data immediately we key. Everywhere else wants you to set an appointment or subscribe to get going. I had an EOD request that needed this data so speed was key.
Dave MurphyExcellEnergy
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The Excel file the data comes in was very easy to use and understand. What’s great about the weather data being in excel is I could run formulas against our own sales data (which is also in Excel). Would highly recommend.
Shannon ReelSotra
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I think technically NOAA offers this data for free but it is a total pain to extract. I don’t know anything about APIs so being able to grab this data via excel was wonderful and well worth the money to save time.
Andrew JonesSkyMyst Alarms
Testimonial

Using this data helped us gain some revenue because we adjust our pricing based on weather. Before we were guestimating. This data helped us refine our pricing and showed us we were leaving money on the table.
Christine RhodesOSTE
Testimonial

Being able to download the data immediately we key. Everywhere else wants you to set an appointment or subscribe to get going. I had an EOD request that needed this data so speed was key.
Dave MurphyExcellEnergy
Testimonial

The Excel file the data comes in was very easy to use and understand. What’s great about the weather data being in excel is I could run formulas against our own sales data (which is also in Excel). Would highly recommend.
Shannon ReelSotra
Testimonial

I think technically NOAA offers this data for free but it is a total pain to extract. I don’t know anything about APIs so being able to grab this data via excel was wonderful and well worth the money to save time.
Andrew JonesSkyMyst Alarms
Testimonial

Using this data helped us gain some revenue because we adjust our pricing based on weather. Before we were guestimating. This data helped us refine our pricing and showed us we were leaving money on the table.
Christine RhodesOSTE