NOAA NCEI Climate Data

• Get daily weatherGet a station's weather for each day between two dates, up to a year: high and low temperature, precipitation, snowfall, snow depth, wind, sunshine and humidity where recorded, and what happened (fog, thunder, hail), with NCEI's quality flags in words. From GHCN-Daily, which covers over 100,000 stations worldwide; data arrives 2 to 5 days late. No API key required.
• Get hourly observationsGet the hourly weather reports from a U.S. airport or weather office between two dates, up to 31 days: temperature, dew point, humidity, wind and gusts, visibility, pressure, precipitation, clouds and the weather reported (rain, snow, thunderstorm), in local standard time. From NCEI's Local Climatological Data, usually a day or two behind. No API key required.
• Get monthly summariesGet a station's weather month by month, up to 30 years: average, highest and lowest temperatures and the day each happened, total precipitation and snowfall, the wettest day, days of rain, snow, heat and frost, and heating and cooling degree days. From NCEI's Global Summary of the Month. No API key required.
• Get yearly summariesGet a station's weather year by year, for as many years as it has: average, highest and lowest temperatures and their dates, total precipitation and snowfall, days of rain, snow, heat, frost, fog and thunderstorms, and degree days. From NCEI's Global Summary of the Year. No API key required.
• Get daily climate normalsGet what is normal at a U.S. station for each calendar day: the 30-year average high, low and mean temperature, the chance of rain and snow, precipitation and snowfall so far that month and year, and heating, cooling and growing degree days. Compare a day's weather with normal. No API key required.
• Get monthly climate normalsGet a U.S. station's normal weather for each month: the 30-year average high, low and mean temperature, precipitation, snowfall, rainy, snowy, hot and frosty days, the chance of a frost, and degree days. No API key required.
• Get annual climate normalsGet a U.S. station's normal year and seasons: average temperatures, precipitation and snowfall, hot and frosty days, degree days, and the usual dates of the last spring frost and first autumn frost with the length of the growing season. No API key required.
• Find stations near a placeFind the weather stations around a point, nearest first, with their IDs, distance and the dates they have data for. Choose the data they must have (daily, hourly, monthly, normals), and optionally only stations reporting in a period or measuring temperature. No API key required.
• Find stations in an areaFind the weather stations inside a box drawn by its north, south, east and west edges, those keeping the most kinds of data first, with their IDs and the dates they have data for. Choose the data they must have, and optionally a period or temperature. No API key required.
• Get a stationGet a weather station's name, location and the dates it has data for in a dataset, with every kind of data it keeps, when each starts and ends, and how complete it is. Check a station before reading it. No API key required.
• Search datasetsSearch NCEI's datasets (weather, climate normals, radar, satellite, ocean) by words in their names and descriptions, with the years each covers, how often it is updated and its DOI to cite. No API key required.
• Get a datasetGet one NCEI dataset's description, the years it covers, its DOI to cite, its keywords and every kind of data it holds, with units where NCEI gives them. No API key required.

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