September weather forecast
Allenspark, CO

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Weather in September

September, the first month of the autumn in Allenspark, is still a refreshing month, with an average temperature varying between 41.5°F (5.3°C) and 64.9°F (18.3°C).

Temperature

September heralds a minor drop in average high-temperature, sliding from August's agreeable 71.2°F (21.8°C) to an enjoyable 64.9°F (18.3°C). In the face of high daytime temperatures, Allenspark witnesses a consistent average nighttime low of 41.5°F (5.3°C) during September.

Humidity

In Allenspark, Colorado, the average relative humidity in September is 51%.

Rainfall

In Allenspark, during September, the rain falls for 13.3 days and regularly aggregates up to 2.01" (51mm) of precipitation. Throughout the year, in Allenspark, there are 137.4 rainfall days, and 27.32" (694mm) of precipitation is accumulated.

Snowfall

January through June, August through December are months with snowfall. In September, in Allenspark, it is snowing for 2.1 days. Throughout September, 1.34" (34mm) of snow is accumulated. In Allenspark, during the entire year, snow falls for 118 days and aggregates up to 107.17" (2722mm) of snow.

Daylight

In Allenspark, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:33 pm. On the last day of September, in Allenspark, sunrise is at 6:58 am and sunset at 6:45 pm MDT.

Sunshine

The average sunshine in September in Allenspark is 10.5h.

UV index

In September, the average daily maximum UV index in Allenspark is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 in September interprets into the following advice:
Make use of precautions - Suggestions to resist sunburn are communicated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What are September temperatures in Allenspark?

In Allenspark, in September, the average high-temperature is 64.9°F (18.3°C), and the average low-temperature is 41.5°F (5.3°C).

What is the average humidity in September in Allenspark?

In September, the average relative humidity in Allenspark, Colorado, is 51%.

How many days does it rain in September in Allenspark?

In September, the rain falls for 13.3 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

How much does it snow in Allenspark in September?

In Allenspark, in September, snow falls for 2.1 days, with typically accumulated 1.34" (34mm) of snow.

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

In September, the average day length in Allenspark is 12h and 26min.

What time are sunrise and sunset in September in Allenspark?

On the first day of September in Allenspark, sunrise is at 6:30 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:45 pm MDT.

How many hours of sunshine does Allenspark have in September?

In September, the average sunshine duration in Allenspark is 10.5h.

What is the UV index reading in September in Allenspark?

In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Allenspark, CO

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

The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is December (27.7°F).

  • Average low temperature in September: 41.5°F

The month with the highest average low temperature is July (48.6°F).
The coldest month (with the lowest average low temperature) is December (11.8°F).

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Average pressure in September
Allenspark, CO

Average pressure in September - Allenspark, CO
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.92"Hg).

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Average wind speed in September
Allenspark, CO

Average wind speed in September - Allenspark, CO
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in September
Allenspark, CO

Average humidity in September - Allenspark, CO
  • Average humidity in September: 51%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is June (50%).

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Average rainfall in September
Allenspark, CO

Average rainfall in September - Allenspark, CO
  • Average rainfall in September: 2.01"

The wettest months (with the highest rainfall) are May and July (4.29").
The driest months (with the least rainfall) are January, November and December (1.02").

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Average rainfall days in September
Allenspark, CO

Average rainfall days in September - Allenspark, CO
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is July (23.1 days).
The month with the least rainy days is November (4.5 days).

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Average snowfall in September
Allenspark, CO

Average snowfall in September - Allenspark, CO
  • Average snowfall in September: 1.34"

The month with the highest snowfall is April (20.35").
The month with the least snowfall is July (0").

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Average snowfall days in September
Allenspark, CO

Average snowfall days in September - Allenspark, CO
  • Average snowfall days in September: 2.1 days

The month with the highest number of snowfall days is March (17.1 days).
The month with the least snowfall days is July (0 days).

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

Average daylight in September / Average sunshine in September - Allenspark, CO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 10h and 3min

The months with the most sunshine are June and July (Average sunshine: 11h and 12min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).

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Average sunshine days in September
Allenspark, CO

Average sunshine days in September - Allenspark, CO
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (6.3 days).

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Average UV index in September
Allenspark, CO

Average UV index in September - Allenspark, CO
  • Average UV index in September: 3

The months with the highest UV index are June, July and August (UV index 4).
The 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
Allenspark, CO

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

The months with the most cloud cover are February and May (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 21).

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Average visibility in September
Allenspark, CO

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

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

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Allenspark, Colorado, USA

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