client.print(sensors.getTempC(Thermometer1)); //print temperature from DS18x20 sensor
Why? If you are going to continue ignoring my advice to get all the sensor data OUTSIDE of whether there is a client request, or not, ONCE, then I'm going to stop replying.
float temp1 = sensors.getTempC(Thermometer1);
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Serial.print("Temperature 1: ");
Serial.println(temp1);
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lcd.print("Temperature 1: ");
lcd.print(temp1);
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client.print("Temperature 1: ");
client.println(temp1);