September weather forecast and climate
Georgetown, CO

The colorful houses in a village in Georgetown, Colorado, with scenic trees on hill slopes around
The colorful houses in a village in Georgetown, Colorado, with scenic trees on hill slopes around

Weather in September

The first month of the autumn, September, is still a comfortable month in Georgetown, Colorado, with temperature in the range of an average high of 62.8°F (17.1°C) and an average low of 37.9°F (3.3°C).

Temperature

In Georgetown, the average high-temperature slightly decreases, from an agreeable 68.7°F (20.4°C) in August, to an enjoyable 62.8°F (17.1°C). The average low-temperature, in Georgetown, is 37.9°F (3.3°C).

Humidity

In Georgetown, the average relative humidity is 54%.

Rainfall

In Georgetown, it is raining for 13 days, with typically 1.38" (35mm) of accumulated precipitation. In Georgetown, Colorado, during the entire year, the rain falls for 138.3 days and collects up to 23.07" (586mm) of precipitation.

Snowfall

January through December are months with snowfall in Georgetown. In September, in Georgetown, Colorado, it is snowing for 3.5 days. Throughout September, 1.26" (32mm) of snow is accumulated. Throughout the year, in Georgetown, there are 127.6 snowfall days, and 93.94" (2386mm) of snow is accumulated.

Daylight

In Georgetown, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine is 11h.

UV index

In September, the average daily maximum UV index in Georgetown is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 3 in September interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in September in Georgetown?

The average relative humidity in September in Georgetown is 54%.

How much does it rain in Georgetown in September?

In Georgetown, Colorado, during September, the rain falls for 13 days and regularly aggregates up to 1.38" (35mm) of precipitation.

How many days does it snow in September in Georgetown?

In Georgetown, during September, snow falls for 3.5 days and regularly aggregates up to 1.26" (32mm) of snow.

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

In Georgetown, the average length of the day in September is 12.4h.

How long on average sun shines in September in Georgetown?

In Georgetown, Colorado, the average sunshine in September is 11h.

What is the UV index intensity in September in Georgetown?

The average daily maximum UV index in September in Georgetown is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Georgetown, CO

Average temperature in September - Georgetown, CO
  • Average high temperature in September: 62.8°F

The warmest month (with the highest average high temperature) is July (70°F).
The month with the lowest average high temperature is December (26.8°F).

  • Average low temperature in September: 37.9°F

The month with the highest average low temperature is July (44.2°F).
The coldest months (with the lowest average low temperature) are January and December (8.1°F).

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Average pressure in September
Georgetown, CO

Average pressure in September - Georgetown, CO
  • Average pressure in September: 30.03"

The month with the highest atmospheric pressure is January (30.17").
Months with the lowest atmospheric pressure are April and May (29.93").

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Average wind speed in September
Georgetown, CO

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

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in September
Georgetown, CO

Average humidity in September - Georgetown, CO
  • Average humidity in September: 54%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is June (51%).

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Average rainfall in September
Georgetown, CO

Average rainfall in September - Georgetown, CO
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is December (0.79").

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Average rainfall days in September
Georgetown, CO

Average rainfall days in September - Georgetown, CO
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is November (3.4 days).

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Average snowfall in September
Georgetown, CO

Average snowfall in September - Georgetown, CO
  • Average snowfall in September: 1.26"

The month with the highest snowfall is May (17.48").
The month with the least snowfall is July (0.12").

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Average snowfall days in September
Georgetown, CO

Average snowfall days in September - Georgetown, CO
  • Average snowfall days in September: 3.5 days

The month with the highest number of snowfall days is April (18.5 days).
Months with the least snowfall days are July and August (0.5 days).

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

Average daylight in September / Average sunshine in September - Georgetown, CO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 11h

The month with the most sunshine is August (Average sunshine: 11.6h).
The month with the least sunshine is February (Average sunshine: 6.3h).

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Average sunshine days in September
Georgetown, CO

Average sunshine days in September - Georgetown, CO
  • Average sunshine days in September: 13.4 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (4.1 days).

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Average UV index in September
Georgetown, CO

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

Months with the highest UV index are June, July and August (UV index 4).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Georgetown, CO

Average cloud cover in September - Georgetown, CO
  • Average cloud cover in September: 18

The month with the most cloud cover is February (Cloud cover 38).
Months with the least cloud cover are June and September (Cloud cover 18).

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Average visibility in September
Georgetown, CO

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

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January and February (5mi).

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