废话不多说，直接上代码

index.wxml

<!--index.wxml-->
<view class="container">
  <text>{{weather.city.text}} : {{weather.city.data}}</text>
  <text>{{weather.weather.text}} : {{weather.weather.data}}</text>
  <text>{{weather.temperature.text}} : {{weather.temperature.data}} ℃</text>
  <text>风速 : {{weather.winddirection.data}} {{weather.windpower.data}}</text>
  <text>{{weather.humidity.text}} : {{weather.humidity.data}}</text>
</view>

index.wxss

/**index.wxss**/
.container{
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: #4D8AD7;
  color: #fff;
  font-size: 18px;
  padding-top: 30rpx;
  padding-left: 30rpx;
}
.container text{
  display: block;
  margin: 30px;
}

index.js

//index.js
//获取应用实例
var amapFile = require('../../utils/amap-wx.js');

Page({
  data: {
    weather: {}
  },
  onl oad: function () {
    var that = this;
    var myAmapFun = new amapFile.AMapWX({ key: '你的KEY' });
    myAmapFun.getWeather({
      success: function (data) {
        that.setData({
          weather: data
        });
      },
      fail: function (info) {
        // wx.showModal({title:info.errMsg})
      }
    })
  }
})

高德开发平台：https://lbs.amap.com

天气相关介绍：https://lbs.amap.com/api/wx/guide/get-data/weather

详细参数介绍：https://lbs.amap.com/api/javascript-api/guide/services/weather