Hi, Matt here, scripting R for nearly 3 years and looking to help you.
I don't understand if you need an interactive time series visualization or not (e.g. slider moves the date and data visualization is changed accordingly). By itself R is not good for that, so either Shiny (R on server, currently can be installed on Linux and Mac) or D3.js (javascript data visualization library) would be two options for you.
Little late here, tough week, so I am looking for your reply with more information about your project (haven't done climatological data before). Regarding time I want to finish my 2nd Udemy course by Wednesday/Thursday yet can seize the remaining days till 16th and do the agreed work. I don't like asking for too many additional improvements that some of the buyers wanted from me in the past and that can double or even triple required work (I'm just writing about the experience with some of my recent buyers here).
Best Regards,
Matt
P.S. As far as I know the bid can be changed even after the bidding ends when all is communicated and agreed.