So this is about the Weather Underground data.
You can download csv files from individual weather stations in wunderground, however you need to know the weather station identifier. Here is an example URL for a weather station in Kirkland, WA (KWAKIRKL8):
http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KWAKIRKL8&day=31&month=1&year=2014&graphspan=day&format=1
Here is some R code:
url <- 'http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KWAKIRKL8&day=31&month=1&year=2014&graphspan=day&format=1'
s <- getURL(url)
s <- gsub("
\n","",s)
wdf <- read.csv(con<-textConnection(s))
And here is a page with which you can manually find stations and their codes.
http://www.wunderground.com/wundermap/
Since you only need a few you can pick them out manually.