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Source Files

Colonial Era Weather Archive (CA)

TMAX
TMIN
Source: National Climatic Data Center

GCOS Monthly Summaries from DWD

TAVG
TMAX
TMIN
Source: Deutscher Wetterdienst

GHCN Daily

TOBS
TMAX
TMIN
Source: National Climatic Data Center

GHCN Monthly version 2

TAVG
TMAX
TMIN
Source: National Climatic Data Center

GHCN Monthly version 3

TAVG
TMAX
TMIN
Source: National Climatic Data Center

GSN Monthly Summaries from NOAA

TAVG
TMAX
TMIN
Source: NOAA Satellite and Information Service

Global Summary of the Day

TAVG
TMAX
TMIN
Source: National Climatic Data Center

Hadley Centre - CRU

TAVG
Source: Met Office

Monthly Climatic Data of the World

TAVG
Source: National Climatic Data Center

Scientific Committee on Antarctic Research

TAVG
Source: British Antarctic Survey

US Cooperative Summary of the Day

TAVG
TMAX
TMIN
Source: National Climatic Data Center

US Cooperative Summary of the Month

TAVG
TMAX
TMIN
Source: National Climatic Data Center

US First Order Summary of the Day

TAVG
TMAX
TMIN
Source: National Climatic Data Center

US Historical Climatology Network - Monthly

TAVG
TMAX
TMIN
Source: National Center for Atmospheric Research

World Monthly Surface Station Climatology

TAVG
Source: National Center for Atmospheric Research (Requires NCAR registration)

World Weather Records

TAVG
TMAX
TMIN
Source: National Climatic Data Center (1961-present updates only)

1.6 billion records

The Berkeley Earth Surface Temperature Study has created a preliminary merged data set by combining 1.6 billion temperature reports from 16 preexisting data archives.