September weather forecast
Forsyth, MO

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Forsyth, Missouri, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 59.7°F (15.4°C).

Temperature

The arrival of September signals a subtle shift in temperature, down from a tropical 88.9°F (31.6°C) in August to a moderately hot 81.7°F (27.6°C). Forsyth witnesses a consistent, sharp contrast from the daytime highs, with an average low-temperature of 59.7°F (15.4°C) throughout September.

Heat index

September's mean heat index is appraised at a hot 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
The standards for the heat index are set for locations in shade and under light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Forsyth, Missouri, during September, the rain falls for 11.8 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Forsyth, during the entire year, the rain falls for 142.8 days and collects up to 30.47" (774mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In September, the average length of the day in Forsyth is 12h and 24min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:56 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 5 during September translates into these guidelines:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Forsyth in September?

An average high-temperature, in September, in Forsyth, is 81.7°F (27.6°C) and the average low-temperature is 59.7°F (15.4°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is appraised at 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 74%.

How much does it rain in September?

In Forsyth, during September, the rain falls for 11.8 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:56 pm CDT.

How many hours of sunshine does Forsyth have in September?

The average sunshine duration in September is 9.4h.

How high is the UV index in September?

In Forsyth, the average daily maximum UV index in September is 5. A UV Index value 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Forsyth, MO

Average temperature in September - Forsyth, MO
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (44.1°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure in September
Forsyth, MO

Average pressure in September - Forsyth, MO
  • Average pressure in September: 30.02"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).

Average wind speed in September
Forsyth, MO

Average wind speed in September - Forsyth, MO
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are January, February, March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).

Average humidity in September
Forsyth, MO

Average humidity in September - Forsyth, MO
  • Average humidity in September: 74%

The months with the highest relative humidity are March and May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).

Average rainfall in September
Forsyth, MO

Average rainfall in September - Forsyth, MO
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.42").

Average rainfall days in September
Forsyth, MO

Average rainfall days in September - Forsyth, MO
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (7.2 days).

Average snowfall in September
Forsyth, MO

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

The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Forsyth, MO

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

The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Forsyth, MO

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 24min).

Average sunshine days in September
Forsyth, MO

Average sunshine days in September - Forsyth, MO
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (12.2 days).

Average UV index in September
Forsyth, MO

Average UV index in September - Forsyth, 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).

Average cloud cover in September
Forsyth, MO

Average cloud cover in September - Forsyth, MO
  • Average cloud cover in September: 30

The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are June, July and August (Cloud cover 28).

Average visibility in September
Forsyth, MO

Average visibility in September - Forsyth, MO
  • Average visibility in September: 6mi

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

Forsyth, Missouri, USA

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