Is there a website like weather.com that tells historical (past two or three weeks) weather data?
Best place for weather related information is NOAA http://www.noaa.gov/pastweather.html If you’re looking for past weather information, you’ve found the right place. This is a roundup of NOAA Web sites that contain archived weather information. The NOAA Climatic Data Center in Asheville, N.C., is the world’s largest reservoir of archived climate and weather data. Official weather records date back to 1895. You can obtain certified weather information for a court case, building project or other purpose.
