Here is today's weather forecast in Apple Weather app (iOS) and WeatherCAN app (iOS). Today's Low is about 14 C, and today's High is about 27 C.
Sensi app (iOS), however, shows today's Low is 16 C (close enough), and today's High is only 19 C (way off).
Some discrepancies are expected, of course. However, the difference of about 8 C in today's High is excessive, indicating potential problems in the source weather data or in data transfer or display process. Please investigate.
Since Relative Humidity is an important data for settings in Sensi app (iOS), please add current humidity from the weather source that Sensi uses, both display in Sensi app (iOS) and Apps in Shortcuts (iOS).