hello.go

package main

import (
  "fmt"
  "net/http"
  "io/ioutil"
)

func main() {
  // fmt.Printf("Hello, world!\n")
  body, _ := getWeatherResponseBody()
  fmt.Printf("Response: %s", body)
}

func getWeatherResponseBody() ([]byte, error) {
  // http://api.openweathermap.org/data/2.5/weather?q=Melbourne,au

  resp, err := http.Get("http://api.openweathermap.org/data/2.5/weather?q=Melbourne,au")

  if err != nil {
    fmt.Printf("Error getting weather: %v", err)
    return []byte(""), err
  }    

  body, err := ioutil.ReadAll(resp.Body)

  if err != nil {
    fmt.Printf("Error reading weather: %v", err)
    return []byte(""), err
  }    
  defer resp.Body.Close()
  return body, nil
}

type City struct {
  Weather Weather `json:"main"`
  Name string `json:"name"`
}

type Weather struct {
  CurrentTemp float64 `json:"temp"`
  MaxTemp     float64 `json:"temp_max"`
}