Standing or walking in the rain is an action best avoided. In New York City, when faced with such inclement weather, the need for private transportation naturally increases. Taxi drivers could thus make a wage that is higher and spend less time looking for customers. Nonetheless, it has been a standard criticism that it is not easy to find a taxi in the rain.
With upsurge pricing and mobile driver-passenger fitting technology, Uber entered the NYC market in May 2011 as an alternative to taxis. Surge pricing means passengers pay an increased rate for the Uber service during times of high demand, which gives incentives to Uber motorists to supply rides. Uber could consequently be a rational response to unmet demand during poor weather.
Orignal article here.