September weather forecast
Atwood, CO

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Weather in September

September, the first month of the autumn in Atwood, is also a moderately hot month, with an average temperature ranging between max 78.8°F (26°C) and min 56.3°F (13.5°C).

Temperature

September marks a gentle change in average high-temperature, declining from August's tropical 86.2°F (30.1°C) to a warm 78.8°F (26°C). Atwood anticipates a considerable cooling off from the daytime high to an average minimum temperature of 56.3°F (13.5°C) in September.

Humidity

With an average relative humidity of 47%, September is the least humid month in Atwood.

Rainfall

In September, in Atwood, the rain falls for 10.1 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 123.2 rainfall days, and 15.39" (391mm) of precipitation is accumulated.

Snowfall

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

Daylight

In September, the average length of the day in Atwood is 12h and 27min.
On the first day of September, sunrise is at 6:21 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:36 pm MDT.

Sunshine

In September, the average sunshine is 10.3h.

UV index

In September, the average daily maximum UV index in Atwood is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What are the temperatures in Atwood in September?

In Atwood, in September, the average high-temperature is 78.8°F (26°C), and the average low-temperature is 56.3°F (13.5°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 87.8°F (31°C).

What is the least humid month in Atwood?

With an average relative humidity of 47%, September is the least humid month in Atwood.

What is the average humidity in September in Atwood?

The average relative humidity in September in Atwood, Colorado, is 47%.

How much does it rain in Atwood in September?

In Atwood, Colorado, in September, it is raining for 10.1 days, with typically 0.98" (25mm) of accumulated precipitation.

When it does not snow in Atwood?

June through September are months without snowfall in Atwood, Colorado.

Does it snow in Atwood in September?

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

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

In Atwood, the average day length in September is 12h and 27min.

When is the sunrise / sunset in September in Atwood?

In September, on the first day of the month, sunrise is at 6:21 am and sunset at 7:24 pm. On the last day of the month, in Atwood, Colorado, sunrise is at 6:49 am and sunset at 6:36 pm MDT.

How long on average sun shines in September in Atwood?

In September, the average sunshine duration is 10.3h.

How high is the UV index in September in Atwood?

In September, the average daily maximum UV index in Atwood, Colorado, is 5. A UV Index reading of 3 to 5 represents a medium health risk from 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
Atwood, CO

Average temperature in September - Atwood, CO
  • Average high temperature in September: 78.8°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (37.8°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (23°F).

Average pressure in September
Atwood, CO

Average pressure in September - Atwood, CO
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in September
Atwood, CO

Average wind speed in September - Atwood, CO
  • Average wind speed in September: 9.5mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9mph).

Average humidity in September
Atwood, CO

Average humidity in September - Atwood, CO
  • Average humidity in September: 47%

The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is September (47%).

Average rainfall in September
Atwood, CO

Average rainfall in September - Atwood, CO
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in September
Atwood, CO

Average rainfall days in September - Atwood, CO
  • Average rainfall days in September: 10.1 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in September
Atwood, CO

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

The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Atwood, CO

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

The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Atwood, 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 18min).

  • Average sunshine in September: 10h and 2min

The months with the most sunshine are June and August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).

Average sunshine days in September
Atwood, CO

Average sunshine days in September - Atwood, CO
  • Average sunshine days in September: 16.8 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in September
Atwood, CO

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

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

Average cloud cover in September
Atwood, CO

Average cloud cover in September - Atwood, CO
  • Average cloud cover in September: 19

The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in September
Atwood, CO

Average visibility in September - Atwood, 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).

Atwood, Colorado, USA

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