Is there a relationship between the wireless router signal and the weather temperature?

Oh,no. There are many factors that affect the radio transmission loss. In general electromagnetic environment, transmission distance and obstacles have great influence. When the signal passes through an ordinary wall, the signal intensity will generally decrease by about 10dB (or 10dBm? I don't remember). When the signal strength is low to a certain threshold, the digital pulse is easy to jump and produce error elements, and the number of signal error correction retransmissions increases (power consumption).

What is the transmission power and gain of the wireless router you use (the state stipulates that manufacturers limit the transmission power when manufacturing products, etc.). )? Your wireless router and computer are separated by a building, so the signal can't be received effectively, right?

Compared with the transmission of radio signals in sunny days and rainy days, the transmission effect in sunny days is better. As for the temperature, it has little effect.