September weather forecast
South Fork, CO

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Weather in September

September, the first month of the autumn in South Fork, is still a refreshing month, with an average temperature fluctuating between 39.4°F (4.1°C) and 63.7°F (17.6°C).

Temperature

The onset of September brings an average high-temperature of an enjoyable 63.7°F (17.6°C), nearly matching the August temperature. During September, South Fork detects a significant contrast from its daytime temperatures, with nights averaging at a cold 39.4°F (4.1°C).

Humidity

The average relative humidity in September is 57%.

Rainfall

In South Fork, during September, the rain falls for 14 days and regularly aggregates up to 1.61" (41mm) of precipitation. In South Fork, during the entire year, the rain falls for 116.8 days and collects up to 17.01" (432mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 0.63" (16mm) of snow. In South Fork, during the entire year, snow falls for 78.8 days and aggregates up to 51.85" (1317mm) of snow.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:37 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:50 pm MDT.

Sunshine

In September, the average sunshine is 10.9h.

UV index

In South Fork, Colorado, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. To guard against the harmful effects of the Sun, minimize exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

What is the usual temperature for South Fork in September?

The average high-temperature and low-temperature in South Fork, Colorado, during September are 63.7°F (17.6°C) and 39.4°F (4.1°C) respectively.

What is the average humidity in September in South Fork?

The average relative humidity in September is 57%.

How much does it rain in South Fork in September?

In South Fork, Colorado, in September, it is raining for 14 days, with typically 1.61" (41mm) of accumulated precipitation.

When does it start to snow in South Fork?

September is the first month it typically snows in South Fork. Throughout September, in the average 0.5 snowfall days, it receives 0.63" (16mm) of snow.

How many hours of daylight does South Fork have in September?

In South Fork, Colorado, the average day length in September is 12h and 25min.

What time are sunrise and sunset in September in South Fork?

On the first day of September in South Fork, Colorado, sunrise is at 6:37 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:50 pm MDT.

How many hours of sunshine does South Fork have in September?

In September, the average sunshine duration in South Fork, Colorado, is 10.9h.

What is the UV index reading in September in South Fork?

The average daily maximum UV index in September in South Fork is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
South Fork, CO

Average temperature in September - South Fork, CO
  • Average high temperature in September: 63.7°F

The warmest month (with the highest average high temperature) is July (71.2°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in September: 39.4°F

The month with the highest average low temperature is July (45.5°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

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Average pressure in September
South Fork, CO

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

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is April (29.93"Hg).

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Average wind speed in September
South Fork, CO

Average wind speed in September - South Fork, CO
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

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Average humidity in September
South Fork, CO

Average humidity in September - South Fork, CO
  • Average humidity in September: 57%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is June (42%).

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Average rainfall in September
South Fork, CO

Average rainfall in September - South Fork, CO
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is November (0.63").

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Average rainfall days in September
South Fork, CO

Average rainfall days in September - South Fork, CO
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (23.2 days).
The month with the least rainy days is November (3 days).

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Average snowfall in September
South Fork, CO

Average snowfall in September - South Fork, CO
  • Average snowfall in September: 0.63"

The month with the highest snowfall is March (8.78").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
South Fork, CO

Average snowfall days in September - South Fork, CO
  • Average snowfall days in September: 0.5 days

The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
South Fork, CO

Average daylight in September / Average sunshine in September - South Fork, 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 36min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).

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Average sunshine days in September
South Fork, CO

Average sunshine days in September - South Fork, CO
  • Average sunshine days in September: 12 days

The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is July (5.6 days).

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Average UV index in September
South Fork, CO

Average UV index in September - South Fork, 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
South Fork, CO

Average cloud cover in September - South Fork, CO
  • Average cloud cover in September: 19

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is June (Cloud cover 15).

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Average visibility in September
South Fork, CO

Average visibility in September - South Fork, CO
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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South Fork, Colorado, USA

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