September weather forecast
Boncarbo, CO

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Weather in September

The first month of the autumn, September, is still a warm month in Boncarbo, Colorado, with an average temperature fluctuating between 73.6°F (23.1°C) and 50.7°F (10.4°C).

Temperature

The beginning of September brings a slight decrease in the average high-temperature, transitioning from 80.1°F (26.7°C) in August to a still warm 73.6°F (23.1°C). Despite the stark contrast with daytime temperatures, Boncarbo's September nights average at a cool 50.7°F (10.4°C).

Humidity

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

Rainfall

In Boncarbo, in September, during 11.6 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, in Boncarbo, there are 102.5 rainfall days, and 12.95" (329mm) of precipitation is accumulated.

Snowfall

In Boncarbo, snow does not fall in June through September.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:27 pm. On the last day of September, in Boncarbo, sunrise is at 6:54 am and sunset at 6:42 pm MDT.

Sunshine

The average sunshine in September is 10.9h.

UV index

In September, the average daily maximum UV index in Boncarbo is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What is the temperature in September in Boncarbo?

September temperatures in Boncarbo, Colorado, vary between a high-temperature of 73.6°F (23.1°C) and a low-temperature of 50.7°F (10.4°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 82.4°F (28°C).

What is the average humidity in September in Boncarbo?

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

How much does it rain in Boncarbo in September?

In Boncarbo, Colorado, in September, during 11.6 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

When it does not snow in Boncarbo?

In Boncarbo, snow does not fall in June through September.

Does it snow in Boncarbo in September?

In Boncarbo, Colorado, in September, it doesn't snow. In October, it regularly snows.

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

The average day length in September in Boncarbo is 12h and 25min.

What time are sunrise and sunset in September in Boncarbo?

On the first day of September, sunrise is at 6:30 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:42 pm MDT.

How many hours of sunshine does Boncarbo have in September?

The average sunshine duration in September in Boncarbo, Colorado, is 10.9h.

What is the UV index intensity in September in Boncarbo?

The average daily maximum UV index in September in Boncarbo, Colorado, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Boncarbo, CO

Average temperature in September - Boncarbo, CO
  • Average high temperature in September: 73.6°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (40.3°F).

  • Average low temperature in September: 50.7°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (21°F).

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Average pressure in September
Boncarbo, CO

Average pressure in September - Boncarbo, CO
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is April (29.87"Hg).

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Average wind speed in September
Boncarbo, CO

Average wind speed in September - Boncarbo, CO
  • Average wind speed in September: 8mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in September
Boncarbo, CO

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

The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (41%).

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Average rainfall in September
Boncarbo, CO

Average rainfall in September - Boncarbo, CO
  • Average rainfall in September: 0.94"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is November (0.39").

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Average rainfall days in September
Boncarbo, CO

Average rainfall days in September - Boncarbo, CO
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is November (2.5 days).

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Average snowfall in September
Boncarbo, CO

Average snowfall in September - Boncarbo, CO
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.78").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Boncarbo, CO

Average snowfall days in September - Boncarbo, CO
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).

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Average sunshine days in September
Boncarbo, CO

Average sunshine days in September - Boncarbo, CO
  • Average sunshine days in September: 14.1 days

The month with the most sunshine days is November (24.1 days).
The month with the least sunshine days is July (7.8 days).

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Average UV index in September
Boncarbo, CO

Average UV index in September - Boncarbo, CO
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in September
Boncarbo, CO

Average cloud cover in September - Boncarbo, CO
  • Average cloud cover in September: 16

The months with the most cloud cover are February and April (Cloud cover 23).
The month with the least cloud cover is October (Cloud cover 15).

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Average visibility in September
Boncarbo, CO

Average visibility in September - Boncarbo, 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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Boncarbo, Colorado, USA

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