Hi, looks like you want mm for rain, but your MQTT is setup to send cm by 
default it seems. Here's your MQTT payload I got from your website's debug 
mode:

{"dayRain_cm": "0.48", "txBatteryStatus": "0.0", "rainRate_cm_per_hour": 
"0.0", "maxSolarRad": "45.7078699733", "rain24_cm": "0.48", "dateTime": 
"1564854542.0", "hourRain_cm": "0.0", "outTemp_C": "17.9444444444", 
"usUnits": "16.0"}

You can see MQTT is sending cm. 

You'll want to change your MQTT settings to send mm instead of cm. Try this 
in your weewx.conf under [StdRestful]:


    [[MQTT]]
        ...your current settings...
        [[[inputs]]]
            [[[[dayRain]]]]
                name = dayRain_mm
                units = mm
            [[[[rainRate]]]]
                name = rainRate_mm_per_hour
                units = mm_per_hour


Restart weewx and see if that solves it. 




On Saturday, August 3, 2019 at 8:09:02 AM UTC-4, Brezentrager wrote:
>
> Hi,
> I'm using the MQTT extension with the Belchertown skin (1.0.1) - and get 
> some strange (?) rain readings.
>
> After loading my webpage (wetter-zorneding.de)  - and before the live 
> updated come in - the "total rain" number is correct. At the moments that's 
> 3.4mm.
> When the first live updates come in, this number drops to 0.3mm. (see 
> attached screenshot)
>
> Only in the "weather records" section, the correct total rain figure is 
> still displayed.
>
> Do I do anything wrong? 
> Or is this an intended behavior and I'm just interpreting the numbers 
> wrongly?
>
> Thanks!
> Manfred 
>
> [image: Bildschirmfoto 2019-08-03 um 14.00.10.png]
>
>
>
>

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