September marks a phase of transition between summer and autumn for the
Dinosaur National Monument,
Utah, with the high temperatures gradually giving way to truer fall weather. A unique characteristic of this month is the sharp decrease in high temperatures to around 77.7°F (25.4°C), yet with rainfall not too different from
August, recording 1.2" (30mm). A gradual shortening of daylight hours hints at the forthcoming winter. September serves as a serene time for outdoor activities amidst the changing colors of nature.
Temperature
As August shifts into September, a slight alteration in temperatures is observed, with average highs reducing from a tropical 88°F (31.1°C) to a warm 77.7°F (25.4°C). Dinosaur National Monument's temperature in September declines substantially from daytime highs, settling at a consistent average of 45.5°F (7.5°C) during the nights.
Rainfall
In Dinosaur National Monument, Utah, in September, 1.26" (32mm) of precipitation is typically accumulated. During the entire year, Dinosaur National Monument aggregates up to 11.61" (295mm) of precipitation.
Snowfall
Months with snowfall in Dinosaur National Monument are
January through
June, September through
December. September is the first month it typically snows in Dinosaur National Monument. Throughout September, Dinosaur National Monument receives 0.2" (5mm) of snow. In Dinosaur National Monument, during the entire year, snow aggregates up to 40.91" (1039mm).
Daylight
The average length of the day in September is 12h and 27min.
On the first day of September in Dinosaur National Monument, Utah, sunrise is at 6:43 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:58 pm MDT.