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

September weather forecast and climate
Del Norte, CO

September, the first month of the autumn, in Del Norte, is still a comfortable month, with average temperature ranging between max 63.7°F (17.6°C) and min 39.4°F (4.1°C).

Temperature

In Del Norte, the average high-temperature is essentially the same as in August - a comfortable 63.7°F (17.6°C). In September, the average low-temperature is 39.4°F (4.1°C).

Humidity

In Del Norte, Colorado, the average relative humidity in September is 57%.

Rainfall

In Del Norte, during September, the rain falls for 14 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Del Norte, during the entire year, the rain falls for 116.8 days and collects up to 17.01" (432mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Del Norte. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.63" (16mm) of snow. Throughout the year, in Del Norte, there are 78.8 snowfall days, and 51.85" (1317mm) of snow is accumulated.

Daylight

In Del Norte, the average length of the day is 12.4h.

Sunshine

In Del Norte, the average sunshine is 10.9h.

UV index

The average daily maximum UV index in Del Norte is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in September in Del Norte?

In Del Norte, Colorado, in September, the average high-temperature is 63.7°F (17.6°C), and the average low-temperature is 39.4°F (4.1°C).

What is the average humidity in September in Del Norte?

In Del Norte, the average relative humidity in September is 57%.

How many days does it rain in September in Del Norte?

In Del Norte, in September, during 14 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

When does it start to snow in Del Norte?

September is the first month it typically snows in Del Norte. Throughout September, in the average 0.5 snowfall days, it receives 0.63" (16mm) of snow.

What is the average length of the day in September in Del Norte?

In Del Norte, Colorado, the average length of the day in September is 12.4h.

How long on average sun shines in September in Del Norte?

In Del Norte, Colorado, the average sunshine in September is 10.9h.

How high is the UV index in September in Del Norte?

In September, the average daily maximum UV index in Del Norte is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Del Norte, CO
  • Average high temperature in September: 63.7°F

The warmest month (with the highest average high temperature) is July (71.2°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in September: 39.4°F

The month with the highest average low temperature is July (45.5°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

Average humidity in September - Del Norte, CO
  • Average humidity in September: 57%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is June (42%).

Average rainfall in September - Del Norte, CO
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is November (0.63").

Average rainfall days in September - Del Norte, CO
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (23.2 days).
The month with the least rainy days is November (3 days).

Average snowfall in September - Del Norte, CO
  • Average snowfall in September: 0.63"

The month with the highest snowfall is March (8.78").
Months with the least snowfall are July and August (0").

Average snowfall days in September - Del Norte, CO
  • Average snowfall days in September: 0.5 days

The month with the highest number of snowfall days is February (12.9 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in September / Average sunshine in September - Del Norte, CO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 10.9h

The month with the most sunshine is June (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.3h).

Average UV index in September - Del Norte, CO
  • Average UV index in September: 3

Months with the highest UV index are June, July and August (UV index 4).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).