Danke für deine Antwort.
So sieht der Log aus bei mir:
2018-09-13 23:05:40.750 - info: host.iobroker instance system.adapter.history.0 started with pid 8699
2018-09-13 23:05:41.529 - debug: history.0 objectDB connected
2018-09-13 23:05:41.574 - debug: history.0 statesDB connected
2018-09-13 23:05:41.611 - info: history.0 starting. Version 1.8.5 in /opt/iobroker/node_modules/iobroker.history, node: v6.14.4
2018-09-13 23:05:41.643 - debug: history.0 Found Alias: mihome.0.devices.sensor_ht_158d000208fa89.percent --> Außenbereich
2018-09-13 23:05:41.644 - info: history.0 enabled logging of Außenbereich (Count=1), Alias=true
2018-09-13 23:05:41.644 - debug: history.0 Found Alias: mihome.0.devices.sensor_ht_158d000208fa89.temperature --> Außenbereich
2018-09-13 23:05:41.645 - info: history.0 enabled logging of Außenbereich (Count=2), Alias=true
2018-09-13 23:05:41.645 - debug: history.0 Found Alias: mihome.0.devices.sensor_ht_158d000208fa89.humidity --> Außenbereich
2018-09-13 23:05:41.645 - info: history.0 enabled logging of Außenbereich (Count=3), Alias=true
2018-09-13 23:05:41.646 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328073.percent --> Schlafzimmer
2018-09-13 23:05:41.646 - info: history.0 enabled logging of Schlafzimmer (Count=4), Alias=true
2018-09-13 23:05:41.646 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328073.temperature --> Schlafzimmer
2018-09-13 23:05:41.646 - info: history.0 enabled logging of Schlafzimmer (Count=5), Alias=true
2018-09-13 23:05:41.646 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328073.humidity --> Schlafzimmer
2018-09-13 23:05:41.646 - info: history.0 enabled logging of Schlafzimmer (Count=6), Alias=true
2018-09-13 23:05:41.647 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328073.pressure --> Schlafzimmer
2018-09-13 23:05:41.647 - info: history.0 enabled logging of Schlafzimmer (Count=7), Alias=true
2018-09-13 23:05:41.648 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d00023878c8.percent --> Wohnzimmer
2018-09-13 23:05:41.649 - info: history.0 enabled logging of Wohnzimmer (Count=8), Alias=true
2018-09-13 23:05:41.650 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d00023878c8.temperature --> Wohnzimmer
2018-09-13 23:05:41.650 - info: history.0 enabled logging of Wohnzimmer (Count=9), Alias=true
2018-09-13 23:05:41.651 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d00023878c8.humidity --> Wohnzimmer
2018-09-13 23:05:41.651 - info: history.0 enabled logging of Wohnzimmer (Count=10), Alias=true
2018-09-13 23:05:41.651 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d00023878c8.pressure --> Wohnzimmer
2018-09-13 23:05:41.651 - info: history.0 enabled logging of Wohnzimmer (Count=11), Alias=true
2018-09-13 23:05:41.652 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328001.percent --> Bad
2018-09-13 23:05:41.652 - info: history.0 enabled logging of Bad (Count=12), Alias=true
2018-09-13 23:05:41.653 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328001.temperature --> Bad
2018-09-13 23:05:41.653 - info: history.0 enabled logging of Bad (Count=13), Alias=true
2018-09-13 23:05:41.653 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328001.humidity --> Bad
2018-09-13 23:05:41.654 - info: history.0 enabled logging of Bad (Count=14), Alias=true
2018-09-13 23:05:41.654 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002328001.pressure --> Bad
2018-09-13 23:05:41.654 - info: history.0 enabled logging of Bad (Count=15), Alias=true
2018-09-13 23:05:41.654 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002348109.percent --> Küche
2018-09-13 23:05:41.654 - info: history.0 enabled logging of Küche (Count=16), Alias=true
2018-09-13 23:05:41.655 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002348109.temperature --> Küche
2018-09-13 23:05:41.655 - info: history.0 enabled logging of Küche (Count=17), Alias=true
2018-09-13 23:05:41.656 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002348109.humidity --> Küche
2018-09-13 23:05:41.656 - info: history.0 enabled logging of Küche (Count=18), Alias=true
2018-09-13 23:05:41.656 - debug: history.0 Found Alias: mihome.0.devices.weather_v1_158d0002348109.pressure --> Küche
2018-09-13 23:05:41.657 - info: history.0 enabled logging of Küche (Count=19), Alias=true
2018-09-13 23:05:41.705 - debug: history.0 Min-Delta reached Außenbereich, last-value=null, new-value=46.28, ts=1536872741660
2018-09-13 23:05:41.707 - debug: history.0 Min-Delta reached Schlafzimmer, last-value=null, new-value=996.38, ts=1536872741660
2018-09-13 23:05:41.709 - debug: history.0 Min-Delta reached Wohnzimmer, last-value=null, new-value=996.71, ts=1536872741660
2018-09-13 23:05:41.709 - debug: history.0 Min-Delta reached Bad, last-value=null, new-value=996.32, ts=1536872741660
2018-09-13 23:05:41.710 - debug: history.0 Min-Delta reached Küche, last-value=null, new-value=996.8, ts=1536872741660
2018-09-13 23:06:02.788 - debug: history.0 Min-Delta reached Küche, last-value=996.8, new-value=996.74, ts=1536872762783
2018-09-13 23:06:02.805 - debug: history.0 value not changed Küche, last-value=996.74, new-value=996.74, ts=1536872762804
Die Werte sind aber schepp. Wie auf dem zweiten Bild zu sehen, wird die Temp bspw. ja sauber angezeigt. Auch in der Mi Home App.