September weather forecast
Big Lake, MO

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Weather in September

The first month of the autumn, September, is still a warm month in Big Lake, Missouri, with an average temperature varying between 58.3°F (14.6°C) and 78.3°F (25.7°C).

Temperature

September's arrival comes with a mild decrease in the average high-temperature, moving subtly from 84.2°F (29°C) in August to a still warm 78.3°F (25.7°C). September nights cool down to an average low-temperature of 58.3°F (14.6°C).

Humidity

In September, the average relative humidity is 72%.

Rainfall

In Big Lake, during September, the rain falls for 11.7 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, in Big Lake, there are 120.1 rainfall days, and 22.8" (579mm) of precipitation is accumulated.

Snowfall

In Big Lake, Missouri, snow does not fall in May through September.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:49 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:04 pm CDT.

Sunshine

The average sunshine in September in Big Lake is 9.1h.

UV index

In Big Lake, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
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Frequently asked questions

What are the temperatures in Big Lake in September?

In September, the average high-temperature and low-temperature in Big Lake, Missouri, are 78.3°F (25.7°C) and 58.3°F (14.6°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 93.2°F (34°C).

What is the average humidity in September in Big Lake?

The average relative humidity in September is 72%.

How much does it rain in Big Lake in September?

In Big Lake, Missouri, during September, the rain falls for 11.7 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Big Lake?

May through September are months without snowfall.

Does it snow in Big Lake in September?

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

How many hours of daylight does Big Lake have in September?

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

When are sunrise and sunset in September in Big Lake?

On the first day of September in Big Lake, Missouri, sunrise is at 6:49 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:04 pm CDT.

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

The average sunshine duration in September in Big Lake, Missouri, is 9.1h.

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

In Big Lake, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes 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
Big Lake, MO

Average temperature in September - Big Lake, MO
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in September: 58.3°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

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Average pressure in September
Big Lake, MO

Average pressure in September - Big Lake, MO
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in September
Big Lake, MO

Average wind speed in September - Big Lake, MO
  • Average wind speed in September: 8mph

The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in September
Big Lake, MO

Average humidity in September - Big Lake, MO
  • Average humidity in September: 72%

The months with the highest relative humidity are January, June, July and August (76%).
The month with the lowest relative humidity is October (66%).

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Average rainfall in September
Big Lake, MO

Average rainfall in September - Big Lake, MO
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is February (0.67").

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Average rainfall days in September
Big Lake, MO

Average rainfall days in September - Big Lake, MO
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (3.7 days).

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Average snowfall in September
Big Lake, MO

Average snowfall in September - Big Lake, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Big Lake, MO

Average snowfall days in September - Big Lake, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Big Lake, MO

Average daylight in September / Average sunshine in September - Big Lake, MO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in September
Big Lake, MO

Average sunshine days in September - Big Lake, MO
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is December (22.2 days).
The month with the least sunshine days is May (12 days).

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Average UV index in September
Big Lake, MO

Average UV index in September - Big Lake, MO
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Big Lake, MO

Average cloud cover in September - Big Lake, MO
  • Average cloud cover in September: 28

The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 27).

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Average visibility in September
Big Lake, MO

Average visibility in September - Big Lake, MO
  • 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).

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Big Lake, Missouri, USA

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