Wifi weather station indoor

If you only need a Temp & Humidity sensor (not a full Weather Station with display, etc), you can try:

  1. Sonoff TH10/TH16 - https://www.itead.cc/smart-home/sonoff-th.html
  2. Sonoff Sensor Si7021 - https://www.itead.cc/wiki/Sonoff_Sensor_Si7021
  3. Sonoff-Tasmota (Software) - ITEAD Sonoff switches and sockets - cheap ESP8266 Wifi+MQTT hardware