September weather forecast
Mount Sterling, MO

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Weather in September

The first month of the autumn, September, is still a warm month in Mount Sterling, Missouri, with an average temperature ranging between min 58.8°F (14.9°C) and max 80.2°F (26.8°C).

Temperature

As Mount Sterling enters September, the average high-temperature subtly lowers from the a tropical 87.4°F (30.8°C) of August to a moderately hot 80.2°F (26.8°C). During the month of September, Mount Sterling's nighttime temperature lowers to an average of 58.8°F (14.9°C).

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Mount Sterling, in September, during 12.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, in Mount Sterling, there are 146.3 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

Snowfall

In Mount Sterling, Missouri, snow does not fall in May through September.

Daylight

In Mount Sterling, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:50 pm CDT.

Sunshine

The average sunshine in September in Mount Sterling is 9.4h.

UV index

In September, the average daily maximum UV index in Mount Sterling, Missouri, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 5 suggests these recommendations:
Act with care - The need to guard against sun damage is communicated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the temperature in September in Mount Sterling?

During September, Mount Sterling experiences an average high-temperature of 80.2°F (26.8°C) and a low-temperature of 58.8°F (14.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is estimated at 100.4°F (38°C).

What is the average humidity in September in Mount Sterling?

The average relative humidity in September is 74%.

How many days does it rain in September in Mount Sterling?

In Mount Sterling, Missouri, in September, during 12.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

When it does not snow in Mount Sterling?

May through September are months without snowfall.

Does it snow in Mount Sterling in September?

In Mount Sterling, Missouri, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Mount Sterling?

In September, the average day length is 12h and 25min.

What time are sunrise and sunset in September in Mount Sterling?

On the first day of September in Mount Sterling, Missouri, sunrise is at 6:36 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm CDT.

How many hours of sunshine does Mount Sterling have in September?

In Mount Sterling, the average sunshine duration in September is 9.4h.

What is the UV index intensity in September in Mount Sterling?

In Mount Sterling, Missouri, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk 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
Mount Sterling, MO

Average temperature in September - Mount Sterling, MO
  • Average high temperature in September: 80.2°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 58.8°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 (24.3°F).

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Average pressure in September
Mount Sterling, MO

Average pressure in September - Mount Sterling, MO
  • Average pressure in September: 30.02"Hg

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

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Average wind speed in September
Mount Sterling, MO

Average wind speed in September - Mount Sterling, MO
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
Mount Sterling, MO

Average humidity in September - Mount Sterling, MO
  • Average humidity in September: 74%

The months with the highest relative humidity are March and May (77%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Mount Sterling, MO

Average rainfall in September - Mount Sterling, MO
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is November (1.69").

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Average rainfall days in September
Mount Sterling, MO

Average rainfall days in September - Mount Sterling, MO
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is December (7.4 days).

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Average snowfall in September
Mount Sterling, MO

Average snowfall in September - Mount Sterling, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Mount Sterling, MO

Average snowfall days in September - Mount Sterling, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.3 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
Mount Sterling, MO

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).

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Average sunshine days in September
Mount Sterling, MO

Average sunshine days in September - Mount Sterling, MO
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (11.8 days).

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Average UV index in September
Mount Sterling, MO

Average UV index in September - Mount Sterling, 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
Mount Sterling, MO

Average cloud cover in September - Mount Sterling, MO
  • Average cloud cover in September: 32

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 30).

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Average visibility in September
Mount Sterling, MO

Average visibility in September - Mount Sterling, MO
  • Average visibility in September: 6mi

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

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Mount Sterling, Missouri, USA

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