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.
Weather in Tucson in September. The average maximum daytime temperature in Tucson in September is a hot 34Â°C (93Â°F) with high heat & humidity. There are usually 11 hours of bright sunshine each day, which represents 85% of the 12 hours of daylight. Expect 34mm (1.3 inches) of rainfall across the whole of September with 5 days with some rain falling.