DHT20の分解能（精度）が良すぎて湿度変化が分からない

$ date; python DHT20/main.py
Wed 16 Apr 2025 04:26:24 PM HDT
raw humidity: 210343
raw temp: 402539
humidity: 20.059871673583984
temperature: 26.778221130371094
🌡️ Temperature: 26.778°C
💧 Humidity: 20.06%
$ date; python DHT20/main.py
Wed 16 Apr 2025 04:26:30 PM HDT
raw humidity: 210343
raw temp: 400718
humidity: 20.059871673583984
temperature: 26.430892944335938
🌡️ Temperature: 26.431°C
💧 Humidity: 20.06%
$ date; python DHT20/main.py
Wed 16 Apr 2025 04:26:36 PM HDT
raw humidity: 210350
raw temp: 399638
humidity: 20.06053924560547
temperature: 26.224899291992188
🌡️ Temperature: 26.225°C
💧 Humidity: 20.061%