It definitely does not have the same functionality, you can only see the current temp/precip prob %/humidity/dewpoint/wind speed/etc, you can’t see the forecasted stats I listed in the iOS weather app, you can only get hour by hour temperature.
I’m very disappointed that Dark Sky is going away. If Apple added in the ability to see forecasted hour by hour wind speed/humidity/dew point/etc, it’d be a decent replacement.