September weather forecast
Valles Mines, MO

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Valles Mines, Missouri, with an average temperature varying between 80.1°F (26.7°C) and 59.5°F (15.3°C).

Temperature

During the shift to September, Valles Mines records a mild decrease in average high-temperature, moving from a tropical 86.5°F (30.3°C) in August to a warm 80.1°F (26.7°C). Valles Mines observes an average low-temperature of 59.5°F (15.3°C) during September nights.

Humidity

In Valles Mines, Missouri, the average relative humidity in September is 74%.

Rainfall

In Valles Mines, in September, it is raining for 10.3 days, with typically 1.02" (26mm) of accumulated precipitation. In Valles Mines, during the entire year, the rain falls for 124.5 days and collects up to 16.26" (413mm) of precipitation.

Snowfall

In Valles Mines, Missouri, snow does not fall in April through October.

Daylight

In Valles Mines, Missouri, the average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:32 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:46 pm CDT.

Sunshine

In September, the average sunshine in Valles Mines is 9.5h.

UV index

In Valles Mines, Missouri, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, an average UV index of 5 transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What are the temperatures in Valles Mines in September?

The high-temperature during September is 80.1°F (26.7°C) and the low-temperature is 59.5°F (15.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in August is estimated at 98.6°F (37°C).

What is the average humidity in September in Valles Mines?

The average relative humidity in September in Valles Mines, Missouri, is 74%.

How much does it rain in Valles Mines in September?

In September, in Valles Mines, the rain falls for 10.3 days. Throughout September, 1.02" (26mm) of precipitation is accumulated.

When it does not snow in Valles Mines?

April through October are months without snowfall in Valles Mines.

What is the average length of the day in September in Valles Mines?

In Valles Mines, Missouri, the average day length in September is 12h and 25min.

What time are sunrise and sunset in September in Valles Mines?

In September, on the first day of the month, sunrise is at 6:32 am and sunset at 7:31 pm. On the last day of the month, in Valles Mines, sunrise is at 6:57 am and sunset at 6:46 pm CDT.

How many hours of sunshine does Valles Mines have in September?

In September, the average sunshine duration in Valles Mines, Missouri, is 9.5h.

How high is the UV index in September in Valles Mines?

The average daily maximum UV index in September in Valles Mines, Missouri, is 5. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
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
Valles Mines, MO

Average temperature in September - Valles Mines, MO
  • Average high temperature in September: 80.1°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in September: 59.5°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in September
Valles Mines, MO

Average pressure in September - Valles Mines, 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
Valles Mines, MO

Average wind speed in September - Valles Mines, MO
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
Valles Mines, MO

Average humidity in September - Valles Mines, MO
  • Average humidity in September: 74%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Valles Mines, MO

Average rainfall in September - Valles Mines, MO
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days in September
Valles Mines, MO

Average rainfall days in September - Valles Mines, MO
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in September
Valles Mines, MO

Average snowfall in September - Valles Mines, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Valles Mines, MO

Average snowfall days in September - Valles Mines, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Valles Mines, MO

Average daylight in September / Average sunshine in September - Valles Mines, 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 36min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in September
Valles Mines, MO

Average sunshine days in September - Valles Mines, MO
  • Average sunshine days in September: 17.6 days

The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index in September
Valles Mines, MO

Average UV index in September - Valles Mines, 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 and December (UV index 2).

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Average cloud cover in September
Valles Mines, MO

Average cloud cover in September - Valles Mines, MO
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 28).

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Average visibility in September
Valles Mines, MO

Average visibility in September - Valles Mines, 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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Valles Mines, Missouri, USA

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