Even the most composed golfers will struggle under difficult weather circumstances. Different conditions can have a huge impact on how the days will play out.
Golfers will not typically play in heavy storms, however they will play in rain or conditions directly after rain. These type of conditions will negate a lot of the advantage that strong approach hitters tend to have.
Oppositely, on dryer surfaces, golfers with a weaker approach hit will have to take a safer shot which can leave them trying longer putts to score. It is also likely there will be more water hazards throughout the course as the water pools.
Windy conditions will add to the headache for both the golfer and the punter. It can be beneficial to do some research into which golfers can adjust well to strong winds, and which it typically throws off.
The majority of the time though, golf tournaments are played in more favourable conditions. In hot conditions a golfers fitness and stamina will have more of an impact. Look into how each player fares in the latter stages of tournaments.