Custom UITableView cell Nib file only shows up after select cell?

When I load my app this is what happens. For some reason the table view loads blank. And only when I select the cell and click another cell does the previously selected cell show up. But for the first cell, no matter where/how I click I still can't see the first cell.

I don't understand why this happening b/c I followed this tutorial. Obviously I'm doing something wrong and would be very grateful if someone could tell me why this is happening & how to fix it.

In the main storyboard I'm using a tableViewController SummaryTableViewController and a custom UITableViewCell DayOfWeekTableViewCell. I have a nib file for the table view cell called DayofWeekSpendingTableViewCell.xib. Here's a list of all my files and their fileneames.

This is my SummaryTableViewController code:

class SummaryTableViewController: UITableViewController {
    var dayOfWeek: [String] = [String]()
    var totalSpentPerDay: [Double] = [Double]()

    override func viewDidLoad() {
        super.viewDidLoad()

        dayOfWeek = ["MON", "TUE", "WED", "THU", "FRI", "SAT", "SUN"]
        totalSpentPerDay = [0, 7.27, 0, 0, 39, 0, 0]
    }

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.dayOfWeek.count
    }

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        var cell = tableView.dequeueReusableCellWithIdentifier("summaryCell", forIndexPath: indexPath) as! DayOfWeekTableViewCell

        // Configure the cell...
        let nib = NSBundle.mainBundle().loadNibNamed("DayofWeekSpendingTableViewCell", owner: self, options: nil)
        cell = nib[0] as! DayOfWeekTableViewCell

        cell.dayOfWeek.text = dayOfWeek[indexPath.row]
        cell.totalAmountSpent.text = String(totalSpentPerDay[indexPath.row])

        return cell
    }
}

This is my custom cell DayOfWeekTableViewCell code:

class DayOfWeekTableViewCell: UITableViewCell {

    @IBOutlet weak var dayOfWeek: UILabel!
    @IBOutlet weak var totalAmountSpent: UILabel!

    override func awakeFromNib() {
        super.awakeFromNib()
    }

    override func setSelected(selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
    }

}

In the main storyboard, I've...

• connected the custom cell DayOfWeekTableViewCell to the storyboard cell
• identified the storyboard cell as summaryCell

In the nib file DayofWeekSpendingTableViewCell.xib I've...

• connected my nib files to custom cell DayOfWeekTableViewCell
• identified my nib file as nibCell
• connected the outlets in my nib file to custom cell DayOfWeekTableViewCell

Instead of loading the NIB in cellForRowAtIndexPath, load the NIB in viewDidLoad() and register it for use with your table view

override func viewDidLoad() {
    super.viewDidLoad()

    dayOfWeek = ["MON", "TUE", "WED", "THU", "FRI", "SAT", "SUN"]
    totalSpentPerDay = [0, 7.27, 0, 0, 39, 0, 0]
    // Create a nib for reusing
    let nib = UINib(nibName: "DayofWeekSpendingTableViewCell", bundle: nil)
    tableView.registerNib(nib, forCellReuseIdentifier: "summaryCell")
}

Then you could directly access the cell in cellForRowAtIndexPath:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    // Configure the cell...
    let cell = tableView.dequeueReusableCellWithIdentifier("summaryCell", forIndexPath: indexPath) as! DayOfWeekTableViewCell
    cell.dayOfWeek.text = dayOfWeek[indexPath.row]
    cell.totalAmountSpent.text = String(totalSpentPerDay[indexPath.row])

    return cell
}