September weather forecast
Walnut Grove, MO

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Weather in September

September, the first month of the autumn in Walnut Grove, is also a moderately hot month, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 59.9°F (15.5°C).

Temperature

September brings a minor shift in the average high-temperature, adjusting from a tropical 87.1°F (30.6°C) in August to a moderately hot 80.1°F (26.7°C). Throughout September, an average low-temperature of 59.9°F (15.5°C) is expected in Walnut Grove, Missouri.

Humidity

In September, the average relative humidity in Walnut Grove is 73%.

Rainfall

In September, in Walnut Grove, the rain falls for 14.3 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Walnut Grove, there are 167.3 rainfall days, and 37.91" (963mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall in Walnut Grove.

Daylight

In September, the average length of the day in Walnut Grove is 12h and 25min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:42 pm. On the last day of September, in Walnut Grove, Missouri, sunrise is at 7:09 am and sunset at 6:58 pm CDT.

Sunshine

In Walnut Grove, the average sunshine in September is 9.5h.

UV index

In Walnut Grove, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What are the temperatures in Walnut Grove in September?

Walnut Grove in September has an average high-temperature of 80.1°F (26.7°C) and an average low-temperature of 59.9°F (15.5°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 98.6°F (37°C).

What is the average humidity in September in Walnut Grove?

The average relative humidity in September in Walnut Grove is 73%.

How much does it rain in Walnut Grove in September?

In September, in Walnut Grove, the rain falls for 14.3 days. Throughout September, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in Walnut Grove?

In Walnut Grove, snow does not fall in June through October.

What is the average length of the day in September in Walnut Grove?

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

What time are sunrise and sunset in September in Walnut Grove?

In September, on the first day of the month, sunrise is at 6:45 am and sunset at 7:42 pm. On the last day of the month, in Walnut Grove, Missouri, sunrise is at 7:09 am and sunset at 6:58 pm CDT.

How long on average sun shines in September in Walnut Grove?

The average sunshine duration in September in Walnut Grove, Missouri, is 9.5h.

How high is the UV index in September in Walnut Grove?

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

Average temperature in September - Walnut Grove, MO
  • Average high temperature in September: 80.1°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in September
Walnut Grove, MO

Average pressure in September - Walnut Grove, MO
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Walnut Grove, MO

Average wind speed in September - Walnut Grove, MO
  • Average wind speed in September: 6.8mph

The windiest months (with the highest average wind speed) are January and March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

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Average humidity in September
Walnut Grove, MO

Average humidity in September - Walnut Grove, MO
  • Average humidity in September: 73%

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
Walnut Grove, MO

Average rainfall in September - Walnut Grove, MO
  • Average rainfall in September: 2.44"

The wettest month (with the highest rainfall) is May (5.63").
The driest month (with the least rainfall) is January (1.73").

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Average rainfall days in September
Walnut Grove, MO

Average rainfall days in September - Walnut Grove, MO
  • Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in September
Walnut Grove, MO

Average snowfall in September - Walnut Grove, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.11").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Walnut Grove, MO

Average snowfall days in September - Walnut Grove, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Walnut Grove, MO

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

The month with the longest days is June (Average daylight: 14h and 42min).
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 42min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

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Average sunshine days in September
Walnut Grove, MO

Average sunshine days in September - Walnut Grove, MO
  • Average sunshine days in September: 13 days

The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is July (9.3 days).

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Average UV index in September
Walnut Grove, MO

Average UV index in September - Walnut Grove, MO
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in September
Walnut Grove, MO

Average cloud cover in September - Walnut Grove, MO
  • Average cloud cover in September: 29

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Walnut Grove, MO

Average visibility in September - Walnut Grove, 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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Walnut Grove, Missouri, USA

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