ArrayIndexOutOfBoundsException: 4

ArrayIndexOutOfBoundsException: 4

I'm writing a little program to analyze some data I have and this code,
which worked yesterday, is no longer working. For the life of me, I can't
tell why. To my eye, everything is as it should be. I've tried re-syncing
the folder on my computer with my GitHub Repo and still was receiving the
same error. Maybe a second pair of eyes could help me out?
The text file being read from can be found here.
Here are the methods referred to by the stack trace:
public static void main(String[] args) throws IOException{
FileManagementMethods fmm = new FileManagementMethods();
fmm.runProgram();
}
void runProgram() throws IOException{
boolean doesFileExist = doesFileExist();
if(doesFileExist){
int numLines = getNumberOfLines();
String[] linesFromFile = getLines(numLines);
WeatherAnalysisMethods wam = new WeatherAnalysisMethods();
wam.parseFileAverageTemp(linesFromFile);
wam.parseFileAverageHumidity(linesFromFile);
wam.predictNextTemperature(linesFromFile);
} else{
try {
throw new IOException("Could not find log.txt in default
directory");
} catch (IOException e) {
e.printStackTrace();
}
}
}
void parseFileAverageHumidity(String[] linesFromFile) throws IOException{
int[] humiditiesFromFile = new int[linesFromFile.length];
humiditiesFromFile = getHumiditiesFromFile(linesFromFile.length);
int averageFromFile = 0;
for(int i = 0; i < humiditiesFromFile.length; i++){
averageFromFile += humiditiesFromFile[i];
}
averageFromFile = averageFromFile / humiditiesFromFile.length;
String outString = "Average humidity for whole file = " +
averageFromFile;
FileManagementMethods fmm = new FileManagementMethods();
fmm.saveAnalyzedData(outString);
}
int[] getHumiditiesFromFile(int numLines){
int[] humiditiesFromFile = new int[numLines];
FileManagementMethods fmm = new FileManagementMethods();
String[] lines = fmm.getLines(numLines);
int i = 0;
while(1 < numLines){
String[] lineDivides = lines[i].split(",");
String tempString = lineDivides[4];
humiditiesFromFile[i] = Integer.parseInt(tempString);
i++;
}
return humiditiesFromFile;
}
And here is the stack trace:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
at
org.weatheralert.analysis.WeatherAnalysisMethods.getHumiditiesFromFile(WeatherAnalysisMethods.java:51)
at
org.weatheralert.analysis.WeatherAnalysisMethods.parseFileAverageHumidity(WeatherAnalysisMethods.java:22)
at
org.weatheralert.analysis.FileManagementMethods.runProgram(FileManagementMethods.java:22)
at org.weatheralert.analysis.Main.main(Main.java:9)
If you guys need more information, don't hesitate to ask.