sensor values get cast to int

[dc6jn]

Version of home_assistant

2025.2.1 (but version independent)

Version of the custom_component

INTEGRATION_VERSION = "2.1.28"
daily

Describe the bug

In connector.py the values for dew_point and temp get rounded and cast to int:
309: ATTR_FORECAST_NATIVE_DEW_POINT: int(round(dew_point - 273.1, 0))
322: ATTR_FORECAST_NATIVE_TEMP: int(round(temp_max - 273.1, 0))

475: ATTR_FORECAST_NATIVE_DEW_POINT: int(round(dew_point - 273.1, 0))
487: ATTR_FORECAST_NATIVE_TEMP: int(round(temp_max - 273.1, 0))
490: ATTR_FORECAST_NATIVE_TEMP_LOW: int(round(temp_min - 273.1, 0))

My suggestion would be to replace it with this:

309: ATTR_FORECAST_NATIVE_DEW_POINT: round(dew_point - 273.1, 1)
322: ATTR_FORECAST_NATIVE_TEMP: round(temp_max - 273.1, 1)

475: ATTR_FORECAST_NATIVE_DEW_POINT: round(dew_point - 273.1, 1)
487: ATTR_FORECAST_NATIVE_TEMP: round(temp_max - 273.1, 1)
490: ATTR_FORECAST_NATIVE_TEMP_LOW: round(temp_min - 273.1, 1)

btw: It would be nice to calculate missing values from the forecast, i.e. calculate humidity and absolute_humidity (both missing from dwd forecast) from dew_point and temperature? I can provide formulas if needed.

[FL550]

Hi @dc6jn
I once made the decision to round, because after all it remains a forecast and temperature values with fractions implies a false accuracy. What is your use-case in needing the fractions of degrees?

Regarding your hint with humidity: I wondered why you were writing this, because the relative humidity is already calculated. However I noticed after checking, that these were not included in the forecast and only in the sensors. I fixed this and will release this soon. And do you really need the absolute humidity? I mean, I can include them, however I don't think many users need them and this will only increase the list of optional forecast attributes.