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

September weather forecast and climate
Idaho Springs, CO

The emerald water of St. Mary
The emerald water of St. Mary's Lake circled by green pine trees and vast hill ranges in the Idaho Springs, Colorado, with low hanging clouds
The first month of the autumn, September, is also an agreeable month in Idaho Springs, Colorado, with average temperature fluctuating between 39°F (3.9°C) and 69.8°F (21°C).

Temperature

In Idaho Springs, the average high-temperature marginally drops, from a moderately hot 76.1°F (24.5°C) in August, to an agreeable 69.8°F (21°C). In Idaho Springs, the average low-temperature is 39°F (3.9°C).

Rainfall

During September, Idaho Springs regularly aggregates up to 1.4" (34.5mm) of precipitation. Throughout the year, 15.1" (382.3mm) of rain is accumulated.

Snowfall

January through June, September through December are months with snowfall in Idaho Springs. September is the first month it typically snows in Idaho Springs. Throughout September, Idaho Springs receives 1.9" (48.3mm) of snow. In Idaho Springs, during the entire year, snow aggregates up to 72" (1828.9mm).

Daylight

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

What is the temperature in September in Idaho Springs?

In Idaho Springs, in September, the average high-temperature is 69.8°F (21°C), and the average low-temperature is 39°F (3.9°C).

How much does it rain in Idaho Springs in September?

During September, Idaho Springs regularly aggregates up to 1.4" (34.5mm) of precipitation.

When does it start snowing in Idaho Springs?

September is the first month it typically snows in Idaho Springs, Colorado. Throughout September, Idaho Springs receives 1.9" (48.3mm) of snow.

How many hours of daylight does Idaho Springs have in September?

In September, the average length of the day in Idaho Springs, Colorado, is 12.4h.
Average temperature in September - Idaho Springs, CO
  • Average high temperature in September: 69.8°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 39.1°F

The month with the highest average low temperature is July (47.6°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average rainfall in September - Idaho Springs, CO
  • Average rainfall in September: 1.4"

The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the lowest rainfall) is January (0.3").

Average snowfall in September - Idaho Springs, CO
  • Average snowfall in September: 1.9"

The month with the highest snowfall is April (15.1").
Months with the lowest snowfall are July and August (0").

Average daylight in September - Idaho Springs, 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).