September weather forecast
Lakeside, CO

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Weather in September

September, the first month of the autumn in Lakeside, is still a warm month, with an average temperature varying between 51.4°F (10.8°C) and 76.6°F (24.8°C).

Temperature

September marks a gentle change in average high-temperature, declining from August's moderately hot 83.8°F (28.8°C) to a still warm 76.6°F (24.8°C). Lakeside experiences a significant downturn from peak daytime temperatures throughout September, with the average low-temperature dipping to a cool 51.4°F (10.8°C).

Humidity

In September, the average relative humidity is 42%.

Rainfall

In Lakeside, in September, during 7.6 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Lakeside, during the entire year, the rain falls for 95 days and collects up to 10.08" (256mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:43 pm MDT.

Sunshine

The average sunshine in September is 11.1h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The high-temperature during September is 76.6°F (24.8°C) and the low-temperature is 51.4°F (10.8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 82.4°F (28°C).

What is the average humidity in September?

The average relative humidity in September is 42%.

How many days does it rain in September in Lakeside?

In Lakeside, in September, it is raining for 7.6 days, with typically 0.51" (13mm) of accumulated precipitation.

When it does not snow?

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

Does it snow in September?

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

How many hours of daylight does Lakeside have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:29 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:43 pm MDT.

How many hours of sunshine does Lakeside have in September?

In Lakeside, the average sunshine duration in September is 11.1h.

How high is the UV index in September?

In Lakeside, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
Lakeside, CO

Average temperature in September - Lakeside, CO
  • Average high temperature in September: 76.6°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (39.6°F).

  • Average low temperature in September: 51.4°F

The month with the highest average low temperature is July (59.5°F).
The coldest months (with the lowest average low temperature) are February and December (20.7°F).

Average pressure in September
Lakeside, CO

Average pressure in September - Lakeside, CO
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).

Average wind speed in September
Lakeside, CO

Average wind speed in September - Lakeside, CO
  • Average wind speed in September: 5.6mph

The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).

Average humidity in September
Lakeside, CO

Average humidity in September - Lakeside, CO
  • Average humidity in September: 42%

The month with the highest relative humidity is February (66%).
The months with the lowest relative humidity are June and August (41%).

Average rainfall in September
Lakeside, CO

Average rainfall in September - Lakeside, CO
  • Average rainfall in September: 0.51"

The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in September
Lakeside, CO

Average rainfall days in September - Lakeside, CO
  • Average rainfall days in September: 7.6 days

The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (3.3 days).

Average snowfall in September
Lakeside, CO

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

The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Lakeside, CO

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

The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Lakeside, 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 24min).

  • Average sunshine in September: 11h and 1min

The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).

Average sunshine days in September
Lakeside, CO

Average sunshine days in September - Lakeside, CO
  • Average sunshine days in September: 19 days

The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is July (13.5 days).

Average UV index in September
Lakeside, CO

Average UV index in September - Lakeside, 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
Lakeside, CO

Average cloud cover in September - Lakeside, CO
  • Average cloud cover in September: 14

The month with the most cloud cover is April (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).

Average visibility in September
Lakeside, CO

Average visibility in September - Lakeside, 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).

Lakeside, Colorado, USA

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