Jenson Button believes it was more than just the weather conditions that resulted in him losing pace in qualifying in Austin.
The McLaren had looked solid earlier in the weekend, however, when it came down to it in qualifying he was sorely lacking.
Having to deal with a blustery tail wind, Button struggled to get the most out of his McLaren.
The Brit missed the cut in Q2 by just under two-tenths to finish P13.
"I don't know what happened. I couldn't find the balance or the grip. The pace just wasn't there," he said.
"That's tough, especially when we've looked pretty quick for most of the weekend. But I don't know where our pace has gone in qualifying - it's not the first time it's happened.
"It wasn't necessarily the weather conditions - other drivers seemed to cope - although I guess it may have contributed. We'll investigate.
"It was weird though - especially when you saw that Valtteri [Bottas] could go quickest in Q1 but his team-mate couldn't even get through to Q2."
And Button's woes were compounded by his grid penalty for overtaking under red flags in Friday's first practice.
The three-place drops means he will start Sunday's grand prix from 16th place on the grid.
"My three-place grid penalty means I'll be starting 16th - that won''t be ideal, as it means I'll be starting not only from a long way back but also from the dirty side of the grid."