September weather forecast
Dexter, MO

Weather in September

The first month of the autumn, September, is still a warm month in Dexter, Missouri, with an average temperature varying between 62.4°F (16.9°C) and 81.7°F (27.6°C).

Temperature

In September, the average high-temperature is almost the same as in August - a moderately hot 81.7°F (27.6°C). In September, the average low-temperature is 62.4°F (16.9°C).

Heat index

In September, the average heat index is estimated at a hot 86.2°F (30.1°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, differences in body mass, height, and shape, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 8.6 days and accumulates 0.47" (12mm) of precipitation.

Snowfall

In Dexter, snow does not fall in April through October.

Daylight

The average length of the day in September in Dexter is 12h and 24min.
On the first day of September, sunrise is at 6:31 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:44 pm CDT.

Sunshine

The average sunshine in September is 9.8h.

UV index

In Dexter, Missouri, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Dexter?

In Dexter, in September, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 62.4°F (16.9°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 86.2°F (30.1°C).

What is the average humidity in September in Dexter?

In Dexter, the average relative humidity in September is 72%.

What is the driest month in Dexter?

The month with the least rainfall is September, when the rain falls for 8.6 days and typically collects 0.47" (12mm) of precipitation.

How many days does it rain in September in Dexter?

In Dexter, Missouri, during September, the rain falls for 8.6 days and regularly aggregates up to 0.47" (12mm) of precipitation.

When it does not snow in Dexter?

April through October are months without snowfall in Dexter, Missouri.

What is the average length of the day in September in Dexter?

In Dexter, the average day length in September is 12h and 24min.

What time are sunrise and sunset in September in Dexter?

On the first day of September, sunrise is at 6:31 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:44 pm CDT.

How many hours of sunshine does Dexter have in September?

In September, the average sunshine duration in Dexter is 9.8h.

How high is the UV index in September in Dexter?

In September, the average daily maximum UV index in Dexter, Missouri, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Dexter, MO

Average temperature in September - Dexter, MO
  • Average high temperature in September: 81.7°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 (42.4°F).

  • Average low temperature in September: 62.4°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).

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Average pressure in September
Dexter, MO

Average pressure in September - Dexter, 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 (29.93"Hg).

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Average wind speed in September
Dexter, MO

Average wind speed in September - Dexter, MO
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in September
Dexter, MO

Average humidity in September - Dexter, MO
  • Average humidity in September: 72%

The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in September
Dexter, MO

Average rainfall in September - Dexter, MO
  • Average rainfall in September: 0.47"

The wettest month (with the highest rainfall) is May (1.42").
The driest month (with the least rainfall) is September (0.47").

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Average rainfall days in September
Dexter, MO

Average rainfall days in September - Dexter, MO
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is July (12.5 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in September
Dexter, MO

Average snowfall in September - Dexter, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.24").
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
Dexter, MO

Average snowfall days in September - Dexter, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (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
Dexter, MO

Average daylight in September / Average sunshine in September - Dexter, MO
  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 38min).
The month with the shortest days is December (Average daylight: 9h and 41min).

  • Average sunshine in September: 9h and 48min

The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in September
Dexter, MO

Average sunshine days in September - Dexter, MO
  • Average sunshine days in September: 19.2 days

The month with the most sunshine days is December (23.4 days).
The month with the least sunshine days is May (15.7 days).

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Average UV index in September
Dexter, MO

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

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Average cloud cover in September
Dexter, MO

Average cloud cover in September - Dexter, MO
  • Average cloud cover in September: 27

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 25).

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Average visibility in September
Dexter, MO

Average visibility in September - Dexter, 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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