Average Humidity by Zip Code by Month

12 data points per zip code, all US zip codes

Excel Download

With this version, you have the average humidity for all US zip codes by each month. Especially useful for custom skin and haircare companies tailoring their customers’ products appropriately given the humidity.

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!

Long-term average relative humidity for each calendar month

An easy-to-use spreadsheet with the long-term monthly-average relative humidity for every US zip code — 12 values per zip code, one for each calendar month, built from official NOAA station records over a rolling 10-year window (July 2016 – June 2026), updated monthly. Delivered as CSV.

It answers questions like “how humid is a typical August here?” for any location in the country.

Only need the single overall average? That dataset is free. Need what actually happened month by month? See the 10-year monthly time-series on our pricing page.

Sample from the actual file

Real rows from this dataset: Miami, FL 33101 across all 12 calendar months, shown to one decimal. The full file covers every US zip code.