September weather forecast
Brownwood, MO

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Weather in September

September, the first month of the autumn in Brownwood, is still a warm month, with an average temperature ranging between min 62.4°F (16.9°C) and max 81.9°F (27.7°C).

Temperature

The commencement of September brings an average high-temperature of a moderately hot 81.9°F (27.7°C), marking an inconsequential divergence from August. In Brownwood, in September, the average low-temperature is an enjoyable 62.4°F (16.9°C).

Heat index

The heat index value during September is calculated to be a tropical 86°F (30°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.

Humidity

The average relative humidity in September in Brownwood is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 10.3 days and accumulates 1.06" (27mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of the month, sunrise is at 6:31 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:44 pm CDT.

Sunshine

In Brownwood, the average sunshine in September is 9.8h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

In September, the average high-temperature and low-temperature are 81.9°F (27.7°C) and 62.4°F (16.9°C) respectively. In September, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 72%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 10.3 days and typically collects 1.06" (27mm) of precipitation.

How much does it rain in September?

In Brownwood, in September, during 10.3 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

When it does not snow?

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

What is the average length of the day in September?

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

What time are sunrise and sunset in September in Brownwood?

On the first day of September, sunrise is at 6:31 am and sunset at 7:27 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 Brownwood have in September?

The average sunshine duration in September is 9.8h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from 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
Brownwood, MO

Average temperature in September - Brownwood, MO
  • Average high temperature in September: 81.9°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in September: 62.4°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in September
Brownwood, MO

Average pressure in September - Brownwood, 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).

Average wind speed in September
Brownwood, MO

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

The windiest month (with the highest average wind speed) is February (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in September
Brownwood, MO

Average humidity in September - Brownwood, 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%).

Average rainfall in September
Brownwood, MO

Average rainfall in September - Brownwood, MO
  • Average rainfall in September: 1.06"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is September (1.06").

Average rainfall days in September
Brownwood, MO

Average rainfall days in September - Brownwood, MO
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in September
Brownwood, MO

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

The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Brownwood, MO

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

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Brownwood, 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 5min

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

Average sunshine days in September
Brownwood, MO

Average sunshine days in September - Brownwood, MO
  • Average sunshine days in September: 18.2 days

The month with the most sunshine days is January (21.3 days).
The months with the least sunshine days are May and July (14.1 days).

Average UV index in September
Brownwood, MO

Average UV index in September - Brownwood, 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
Brownwood, MO

Average cloud cover in September - Brownwood, 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).

Average visibility in September
Brownwood, MO

Average visibility in September - Brownwood, 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).

Brownwood, Missouri, USA

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