Google can give you an approximate volume per month..divide it by 30.... I think word tracker gives you a daily break down..not sure...just try its trial version
You can use the google adwords external tool to get number of searches for your keywords, just google for it.
I think wordtracker will provide details. Freekeywords.wordtracker.com will give all the details you are looking for. Google adwords also have a keyword selection tool that would provide approximate search volume of a particular term.
https://adwords.google.co.uk/select/KeywordToolExternal As already mentioned above, use exact match option but remember this shows you local results from Google network not only from Google search. But this can give you some idea of search volume. http://www.google.com/sktool/ This tool can gives you local Google search volume, you need to login to get local results, like search volume form google.co.uk or .com or ... Run PPC (For few days) and see how many impression you will get. Try to make your ad position at top 3. This process can give you very clear idea of daily search volume, Best of Luck