Weather won't affect that pattern much. Winds will affect ground speed but the air speed (aircraft relative to sorrounding air) will be very similar. Other factors such as rain and clouds also shouldn't affect climb rates much. So overall the upper, smooth, graph would be representative for departures at nearly every weather.

In this case, the very high speed at low altitudes could indicate that they had the expected amount of thrust but couldn't climb, maybe due to issues with controls.