GetTemperature.ps1

function Get-Temperature {
    $t = Get-WmiObject MSAcpi_ThermalZoneTemperature -Namespace "root/wmi"
    $returntemp = @()
    foreach ($temp in $t.CurrentTemperature)
    {
    $currentTempKelvin = $temp / 10
    $currentTempCelsius = $currentTempKelvin - 273.15
    $currentTempFahrenheit = (9/5) * $currentTempCelsius + 32
    $returntemp += $currentTempCelsius.ToString() + " C : " + $currentTempFahrenheit.ToString() + " F : " + $currentTempKelvin + " K"  
    }
    return $returntemp
}
Get-Temperature