In times of poor weather, the race can be shortened.

Inventories happen to be low at a time of bad weather.

The mission was scheduled for September 1961, a time of good weather and ample daylight.

These falls normally have water cascading over them only during times of wet weather.

The time of day and weather change the optical effects.

The governor said the program would help preserve farms at a time of falling crop prices and bad weather.

But more needs to be done, and not only in times of hot weather.

"It varies in severity depending on time of the year, weather and location," he said.

This may reflect time of day or weather, for example.

And in times of very special weather they can be.