It’s a hot, sunny day in Miu, a rural village in south-central Kenya. And 31-year-old Stephen Nzioka is at home working on his farm of maize, beans and oranges. He whistles as he digs and clears brush ...

Smartphone weather apps that summarize their forecasts with eye-popping numbers and bright icons may be handy during mild weather, but meteorologists say it’s better to listen to human expertise ...