The site www.wunderground.com stores historical weather records from weather stations all over the world, an example of which can be seen here (scroll down to the bottom of the page to see the Hourly Observations… (Budget: $30-$250 USD, Jobs: PHP)
PHP function to scrape historical weather data from Wunderground.com for specific co-ordinates or a specific weather station at a specific time. by blackswanpartner