chilling (comparative more chilling, superlative most chilling) 1  Becoming cold. 2  Causing cold. 3  Causing mild fear.
Tucson, Arizona, gets 12 inches of rain per year. The US average is 39. Snowfall is 0 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 31.
If you have visited Tucson in drier parts of the year you probably won't be able to recognise it from the picture (above right) taken about 2pm in the afternoon. The worst of the rain is over, but the washes are still flooding over the roads. It is still raining, and continues to do so for another couple of hours.