September weather forecast
Lake George, CO

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Weather in September

The first month of the autumn, September, is also an enjoyable month in Lake George, Colorado, with temperature in the range of an average high of 67.1°F (19.5°C) and an average low of 41.4°F (5.2°C).

Temperature

September heralds a minor drop in average high-temperature, sliding from August's agreeable 73°F (22.8°C) to an enjoyable 67.1°F (19.5°C). Throughout September nights, a significant departure from daytime temperatures, with an average low of 41.4°F (5.2°C), is recognized in Lake George.

Humidity

In September, the average relative humidity is 53%.

Rainfall

In Lake George, Colorado, in September, it is raining for 10.3 days, with typically 0.71" (18mm) of accumulated precipitation. In Lake George, during the entire year, the rain falls for 103.6 days and collects up to 10.24" (260mm) of precipitation.

Snowfall

Months with snowfall in Lake George are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Lake George, there are 64.3 snowfall days, and 24.57" (624mm) of snow is accumulated.

Daylight

In September, the average length of the day in Lake George is 12h and 26min.
On the first day of September in Lake George, sunrise is at 6:31 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:45 pm MDT.

Sunshine

The average sunshine in September in Lake George is 10.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 4 during September leads to these instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Lake George in September?

The average high-temperature and low-temperature in Lake George, Colorado, during September are 67.1°F (19.5°C) and 41.4°F (5.2°C) respectively.

What is the average humidity in September in Lake George?

In September, the average relative humidity in Lake George, Colorado, is 53%.

How many days does it rain in September in Lake George?

In Lake George, in September, it is raining for 10.3 days, with typically 0.71" (18mm) of accumulated precipitation.

When does it start snowing in Lake George?

September is the first month it typically snows in Lake George, Colorado. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in September in Lake George?

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

When are sunrise and sunset in September in Lake George?

On the first day of September in Lake George, Colorado, sunrise is at 6:31 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:45 pm MDT.

How many hours of sunshine does Lake George have in September?

In September, the average sunshine duration in Lake George is 10.9h.

What is the UV index reading in September in Lake George?

In September, the average daily maximum UV index in Lake George is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Lake George, CO

Average temperature in September - Lake George, CO
  • Average high temperature in September: 67.1°F

The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in September: 41.4°F

The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is January (9°F).

Average pressure in September
Lake George, CO

Average pressure in September - Lake George, CO
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is April (29.92"Hg).

Average wind speed in September
Lake George, CO

Average wind speed in September - Lake George, CO
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
Lake George, CO

Average humidity in September - Lake George, CO
  • Average humidity in September: 53%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is June (46%).

Average rainfall in September
Lake George, CO

Average rainfall in September - Lake George, CO
  • Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is July (2.17").
The driest month (with the least rainfall) is November (0.2").

Average rainfall days in September
Lake George, CO

Average rainfall days in September - Lake George, CO
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (2 days).

Average snowfall in September
Lake George, CO

Average snowfall in September - Lake George, CO
  • Average snowfall in September: 0.04"

The month with the highest snowfall is April (4.57").
The months with the least snowfall are July and August (0").

Average snowfall days in September
Lake George, CO

Average snowfall days in September - Lake George, CO
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in September /
Average sunshine in September
Lake George, CO

Average daylight in September / Average sunshine in September - Lake George, 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 42min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).

Average sunshine days in September
Lake George, CO

Average sunshine days in September - Lake George, CO
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (24.2 days).
The month with the least sunshine days is July (8.3 days).

Average UV index in September
Lake George, CO

Average UV index in September - Lake George, CO
  • Average UV index in September: 4

The month with the highest UV index is June (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in September
Lake George, CO

Average cloud cover in September - Lake George, CO
  • Average cloud cover in September: 18

The month with the most cloud cover is February (Cloud cover 30).
The months with the least cloud cover are June and October (Cloud cover 17).

Average visibility in September
Lake George, CO

Average visibility in September - Lake George, CO
  • Average visibility in September: 6mi

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

Lake George, Colorado, USA

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