Weather is an ever changing phenomenon. It can change in within seconds or milliseconds. Weather was quite difficult to monitor in the days when technology was still primitive. But now it is easy as there are various sensors and computing techniques to not only monitor weather but predict it with high accuracy as well. To simplify the detection process IOT (Internet of things) is employed in the project. As IOT is used Arduino is added to the project along with other sensor to monitor the weather. The data from the sensor is uploaded to an open source web-server. The open server can be used both to get real time data as well as download the data for the prediction process. Prediction is done using machine learning algorithms and training the detected datasets.