September weather forecast and climate
Dumont, CO

Weather in September

The first month of the autumn, September, is still a comfortable month in Dumont, Colorado, with average temperature varying between 64.9°F (18.3°C) and 41°F (5°C).

Temperature

In September, the average high-temperature slightly decreases, from an agreeable 71.1°F (21.7°C) in August, to an enjoyable 64.9°F (18.3°C). In Dumont, in September, the average low-temperature is 41°F (5°C).

Humidity

In September, the average relative humidity is 52%.

Rainfall

In September, the rain falls for 9.4 days. Throughout September, 0.55" (14mm) of precipitation is accumulated. In Dumont, during the entire year, the rain falls for 96 days and collects up to 10.08" (256mm) of precipitation.

Snowfall

Months with snowfall are January through December. In Dumont, snow falls for 1.5 days, with typically accumulated 0.39" (10mm) of snow. In Dumont, during the entire year, snow falls for 74.9 days, and aggregates up to 35.39" (899mm) of snow.

Daylight

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

Sunshine

In Dumont, the average sunshine in September is 10.6h.

UV index

In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in September in Dumont?

The average high-temperature, in September, in Dumont, Colorado, is 64.9°F (18.3°C), while the average low-temperature is 41°F (5°C).

What is the average humidity in September in Dumont?

In September, the average relative humidity in Dumont is 52%.

How many days does it rain in September in Dumont?

In Dumont, in September, it is raining for 9.4 days, with typically 0.55" (14mm) of accumulated precipitation.

How much does it snow in Dumont in September?

In September, in Dumont, Colorado, it is snowing for 1.5 days. Throughout September, 0.39" (10mm) of snow is accumulated.

What is the average length of the day in September in Dumont?

In Dumont, the average length of the day in September is 12.4h.

How long on average sun shines in September in Dumont?

The average sunshine in September in Dumont, Colorado, is 10.6h.

How high is the UV index in September in Dumont?

In Dumont, Colorado, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Dumont, CO

Average temperature in September - Dumont, CO
  • Average high temperature in September: 64.9°F

The warmest month (with the highest average high temperature) is July (72.3°F).
The month with the lowest average high temperature is December (29.3°F).

  • Average low temperature in September: 41°F

The month with the highest average low temperature is July (46.9°F).
The coldest month (with the lowest average low temperature) is February (11.3°F).

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Average pressure in September
Dumont, CO

Average pressure in September - Dumont, CO
  • Average pressure in September: 30.03"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is April (29.92").

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Average wind speed in September
Dumont, CO

Average wind speed in September - Dumont, CO
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in September
Dumont, CO

Average humidity in September - Dumont, CO
  • Average humidity in September: 52%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is June (50%).

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Average rainfall in September
Dumont, CO

Average rainfall in September - Dumont, CO
  • Average rainfall in September: 0.55"

The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is December (0.28").

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Average rainfall days in September
Dumont, CO

Average rainfall days in September - Dumont, CO
  • Average rainfall days in September: 9.4 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (2.2 days).

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Average snowfall in September
Dumont, CO

Average snowfall in September - Dumont, CO
  • Average snowfall in September: 0.39"

The month with the highest snowfall is March (6.73").
Months with the least snowfall are July and August (0.04").

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Average snowfall days in September
Dumont, CO

Average snowfall days in September - Dumont, CO
  • Average snowfall days in September: 1.5 days

The month with the highest number of snowfall days is March (11.6 days).
Months with the least snowfall days are July and August (0.1 days).

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Average daylight in September /
Average sunshine in September
Dumont, CO

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

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

  • Average sunshine in September: 10.6h

The month with the most sunshine is June (Average sunshine: 11.3h).
The month with the least sunshine is February (Average sunshine: 6.2h).

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Average sunshine days in September
Dumont, CO

Average sunshine days in September - Dumont, CO
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is July (9.8 days).

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Average UV index in September
Dumont, CO

Average UV index in September - Dumont, 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).

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Average cloud cover in September
Dumont, CO

Average cloud cover in September - Dumont, CO
  • Average cloud cover in September: 21

Months with the most cloud cover are February, April and May (Cloud cover 35).
The month with the least cloud cover is June (Cloud cover 20).

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Average visibility in September
Dumont, CO

Average visibility in September - Dumont, CO
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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