Posted: 01/02/2016 at 23:30
I have one of these:
Which I got from Maplin in a clearance sale. They are also sold under several other names including WH1080/WH1081 and work with several different software packages including Easyweather for PC and wview for Mac.
The base station (which is completely self-contained and can be used without a computer) plugs into PC or Mac via USB for data record downloads and it communicates remotely with the external sensors (temp, humidity, wind speed, rain gauge) wirelessly.
Other software available - google WH1080 software for Mac in your case.
Here's my temperature graph for this year so far - took all of 5 seconds to generate and export from the Easyweather software:
Hope that helps.