Humid Summer Night!
August in New England can bring nights with very high humidity.
Excellent results overnight showing close agreement on temperature from both sensors, blue & green.
The temperature-humidity sensor is reporting higher temperatures and lower RH values than actual at the beginning and end of this chart, despite efforts to isolate & shield this sensor from sunlight, mount thermal conduction, and building heating effects. More work remains to craft a solar shield that enables accurate results 7x24.