Weather update client in Go

//
// Weather proxy listens to weather server which is constantly
// emitting weather data
// Binds SUB socket to tcp://*:5556
//

package main

import (
"fmt"
zmq "github.com/alecthomas/gozmq"
"os"
"strconv"
"strings"
)

func main() {
context, _ := zmq.NewContext()
socket, _ := context.NewSocket(zmq.SUB)
defer context.Close()
defer socket.Close()

var temps []string
var err error
var temp int64
total_temp := 0
filter := "59937"

// find zipcode
if len(os.Args) > 1 { // ./wuclient 85678
filter = string(os.Args[1])
}

//// Subscribe to just one zipcode (whitefish MT 59937) //
fmt.Printf("Collecting updates from weather server for %s…\n", filter)
socket.SetSubscribe(filter)
socket.Connect("tcp://localhost:5556")

for i := 0; i < 101; i++ {
// found temperature point
datapt, _ := socket.Recv(0)
temps = strings.Split(string(datapt), " ")
temp, err = strconv.ParseInt(temps[1], 10, 64)
if err == nil {
//// Invalid string //
total_temp += int(temp)
}
}

fmt.Printf("Average temperature for zipcode %s was %dF \n\n", filter, total_temp/100)
}