Colorado, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Hillrose, CO

The first month of the autumn, September, is still a warm month in Hillrose, Colorado, with average temperature varying between 77°F (25°C) and 46.4°F (8°C).


In September, the average high-temperature drops, from a tropical 86°F (30°C) in August, to a warm 77°F (25°C). The average low-temperature, in September, is 46.4°F (8°C).


During September, Hillrose regularly aggregates up to 1.2" (30mm) of precipitation. During the entire year, Hillrose aggregates up to 17" (433mm) of precipitation.


The average length of the day in September is 12.4h.

What is the temperature in September in Hillrose?

In September, in Hillrose, Colorado, the average high-temperature is 77°F (25°C), and the average low-temperature is 46.4°F (8°C).

How much does it rain in Hillrose in September?

In Hillrose, Colorado, in September, 1.2" (30mm) of precipitation is typically accumulated.

How many hours of daylight does Hillrose have in September?

In Hillrose, Colorado, the average length of the day in September is 12.4h.
Average temperature in September - Hillrose, CO
  • Average high temperature in September: 77°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in September: 46.4°F

Months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

Average rainfall in September - Hillrose, CO
  • Average rainfall in September: 1.2"

The wettest month (with the highest rainfall) is May (3.2").
Driest months (with the lowest rainfall) are January, February and December (0.4").

Average daylight in September - Hillrose, CO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).