Yes, it does, but the difference is very small (comparable to having one less damage ball). https://www.reddit.com/r/TheSilphRoad/comments/7j00yk/analysis_effect_of_weather_on_rate_of_catching/ Up 0 Down
Are these numbers right? Catch chance seems much higher than when I use the gamepress tool. Up 0 Down
it's the same thing you try to catch a Dragonite with 1800 CP and a 2800 CP, wich one is easier? the catch rate difference is about the level Up 0 Down