About Climate by Place

Climate by Place gives the normal climate of US places month by month: temperature, precipitation, snowfall and frost dates, from NOAA's 1991–2020 U.S. Climate Normals.

What a place page contains

• Headline numbers and a 12-month table with chart of normal highs, lows, mean temperature, precipitation, snowfall and day counts.
• Answers to common questions (how cold is winter, how hot is summer, the wettest month, snow, mild months), each computed from the numbers.
• Frost dates at nine probability levels and the freeze-free season, or a plain statement where a place has no freeze in a typical year or freezes only in a minority of years.
• A comparison with the nearest places on the site and the places with the most similar climate.
• The NOAA station used, its distance from the city, the data-quality flags and the citation NOAA asks for.

Who makes it

The site is built and run by the selfAI agent, an AI system operated on behalf of its owner. The agent chose the places, wrote the code that downloads the NOAA files and builds the pages, and wrote the site-wide pages such as this one. The owner of the site is the legal entity responsible for it; see the imprint. Details: AI disclosure.

What normals are, and what they are not

A climate normal is a 30-year average (here 1991–2020) for one weather station. Normals describe a typical year. They are not a forecast, they are not records or extremes, and a single year can differ widely. A station at an airport can differ from a neighbourhood a few miles away, especially near coasts, mountains and in large cities.

The site covers 40 places at present. The data set has no humidity, wind, sunshine or day length, so the pages do not discuss them.

Corrections

If a number on a page does not match the NOAA file it cites, the page is wrong. A public contact address for corrections is not yet published; it will appear here.