September weather forecast
Winfield, CO

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Weather in September

The first month of the autumn, September, is also a moderate month in Winfield, Colorado, with an average temperature varying between 34.3°F (1.3°C) and 58.8°F (14.9°C).

Temperature

September brings a slight decrease in the average high-temperature, shifting from 64.8°F (18.2°C) in August to a still refreshing 58.8°F (14.9°C). September in Winfield witnesses a substantial contrast between the daytime highs and the average low of 34.3°F (1.3°C).

Humidity

The average relative humidity in September in Winfield is 59%.

Rainfall

In Winfield, in September, it is raining for 11.8 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, there are 120.6 rainfall days, and 19.29" (490mm) of precipitation is accumulated.

Snowfall

January through December are months with snowfall. In September, in Winfield, it is snowing for 3.2 days. Throughout September, 1.14" (29mm) of snow is accumulated. In Winfield, during the entire year, snow falls for 142.6 days and aggregates up to 90.39" (2296mm) of snow.

Daylight

In Winfield, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:35 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm MDT.

Sunshine

In Winfield, Colorado, the average sunshine in September is 10.8h.

UV index

The average daily maximum UV index in September in Winfield is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The solar radiation around mid-day is intense; avoid the Sun and stay safe. 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. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

What are the temperatures in Winfield in September?

An average high-temperature, in September, in Winfield, is 58.8°F (14.9°C) and the average low-temperature is 34.3°F (1.3°C).

What is the average humidity in September in Winfield?

The average relative humidity in September in Winfield is 59%.

How many days does it rain in September in Winfield?

In Winfield, Colorado, in September, it is raining for 11.8 days, with typically 1.3" (33mm) of accumulated precipitation.

How many days does it snow in September in Winfield?

In September, it is snowing for 3.2 days. Throughout September, 1.14" (29mm) of snow is accumulated.

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

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

When are sunrise and sunset in September in Winfield?

On the first day of September in Winfield, Colorado, sunrise is at 6:35 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm MDT.

How long on average sun shines in September in Winfield?

In September, the average sunshine duration in Winfield, Colorado, is 10.8h.

How high is the UV index in September in Winfield?

The average daily maximum UV index in September in Winfield, Colorado, is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
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
Winfield, CO

Average temperature in September - Winfield, CO
  • Average high temperature in September: 58.8°F

The warmest month (with the highest average high temperature) is July (66.7°F).
The month with the lowest average high temperature is December (23.5°F).

  • Average low temperature in September: 34.3°F

The month with the highest average low temperature is July (40.1°F).
The coldest months (with the lowest average low temperature) are January and December (2.7°F).

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Average pressure in September
Winfield, CO

Average pressure in September - Winfield, CO
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is April (29.94"Hg).

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Average wind speed in September
Winfield, CO

Average wind speed in September - Winfield, CO
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is February (7mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).

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Average humidity in September
Winfield, CO

Average humidity in September - Winfield, CO
  • Average humidity in September: 59%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is June (51%).

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Average rainfall in September
Winfield, CO

Average rainfall in September - Winfield, CO
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is November (0.91").

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Average rainfall days in September
Winfield, CO

Average rainfall days in September - Winfield, CO
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (3.9 days).

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Average snowfall in September
Winfield, CO

Average snowfall in September - Winfield, CO
  • Average snowfall in September: 1.14"

The month with the highest snowfall is March (15.08").
The month with the least snowfall is August (0.31").

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Average snowfall days in September
Winfield, CO

Average snowfall days in September - Winfield, CO
  • Average snowfall days in September: 3.2 days

The month with the highest number of snowfall days is March (20 days).
The month with the least snowfall days is August (1.3 days).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

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Average sunshine days in September
Winfield, CO

Average sunshine days in September - Winfield, CO
  • Average sunshine days in September: 13.6 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is April (6.1 days).

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Average UV index in September
Winfield, CO

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

The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in September
Winfield, CO

Average cloud cover in September - Winfield, CO
  • Average cloud cover in September: 20

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 17).

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Average visibility in September
Winfield, CO

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Winfield, Colorado, USA

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