September weather forecast
Delta, MO

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Weather in September

The first month of the autumn, September, is still a warm month in Delta, Missouri, with an average temperature fluctuating between 61.2°F (16.2°C) and 80.8°F (27.1°C).

Temperature

Delta's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's tropical 86.2°F (30.1°C) to a moderately hot 80.8°F (27.1°C). Throughout September, Delta's nights cool down to an average of 61.2°F (16.2°C).

Heat index

The heat index for September is evaluated at 84.2°F (29°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

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

Rainfall

The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.57" (40mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 6:30 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:43 pm CDT.

Sunshine

In Delta, the average sunshine in September is 9.6h.

UV index

In Delta, 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 radiation for average individuals.
Note: The maximum UV index of 5 during September translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What are September temperatures in Delta?

In Delta, in September, the average high-temperature is 80.8°F (27.1°C), and the average low-temperature is 61.2°F (16.2°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is evaluated at 84.2°F (29°C).

What is the average humidity in September in Delta?

The average relative humidity in September in Delta is 73%.

What is the driest month in Delta?

The month with the least rainfall in Delta, Missouri, is September, when the rain falls for 11.4 days and typically collects 1.57" (40mm) of precipitation.

How many days does it rain in September in Delta?

In Delta, in September, during 11.4 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.

When it does not snow in Delta?

May through September are months without snowfall in Delta, Missouri.

Does it snow in Delta in September?

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

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

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

When are sunrise and sunset in September in Delta?

On the first day of September in Delta, Missouri, sunrise is at 6:30 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:43 pm CDT.

How many hours of sunshine does Delta have in September?

In Delta, Missouri, the average sunshine duration in September is 9.6h.

What is the UV index intensity in September in Delta?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Delta, MO

Average temperature in September - Delta, MO
  • Average high temperature in September: 80.8°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in September: 61.2°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

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Average pressure in September
Delta, MO

Average pressure in September - Delta, 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 (29.94"Hg).

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Average wind speed in September
Delta, MO

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

The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in September
Delta, MO

Average humidity in September - Delta, MO
  • Average humidity in September: 73%

The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in September
Delta, MO

Average rainfall in September - Delta, MO
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is April (4.33").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in September
Delta, MO

Average rainfall days in September - Delta, MO
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall in September
Delta, MO

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

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Delta, MO

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

The month with the highest number of snowfall days is January (3.7 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
Delta, MO

Average daylight in September / Average sunshine in September - Delta, 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 42min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Delta, MO

Average sunshine days in September - Delta, MO
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (11.9 days).

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Average UV index in September
Delta, MO

Average UV index in September - Delta, 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
Delta, MO

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

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, August and September (Cloud cover 27).

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Average visibility in September
Delta, MO

Average visibility in September - Delta, 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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Delta, Missouri, USA

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