September weather forecast
Terra Haute, GA

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Weather in September

September, the first month of the autumn in Terra Haute, is still a hot month, with an average temperature fluctuating between 86.9°F (30.5°C) and 73°F (22.8°C).

Temperature

September's arrival brings an average high-temperature of a still hot 86.9°F (30.5°C), slightly deviating from August's 90.3°F (32.4°C). Throughout the month of September, the nighttime temperature in Terra Haute dips to an average of 73°F (22.8°C).

Heat index

For September, the heat index is computed to be a torrid 100.4°F (38°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Research indicates the heat index considers values in shaded locales and with light winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The months with the highest humidity are August, September and December, with an average relative humidity of 77%.

Rainfall

In September, the rain falls for 16.6 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 164.2 rainfall days, and 25.67" (652mm) of precipitation is accumulated.

Snowfall

In Terra Haute, snow does not fall in March through November.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:03 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm EDT.

Sunshine

In Terra Haute, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

An average high-temperature, in September, in Terra Haute, is 86.9°F (30.5°C) and the average low-temperature is 73°F (22.8°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is computed to be 100.4°F (38°C).

What is the most humid month?

The months with the highest humidity are August, September and December, with an average relative humidity of 77%.

What is the average humidity in September?

The average relative humidity in September is 77%.

How many days does it rain in September?

In Terra Haute, during September, the rain falls for 16.6 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow?

March through November are months without snowfall.

What is the average length of the day in September?

In September, the average day length is 12h and 20min.

When is the sunrise / sunset in September?

On the first day of September in Terra Haute, sunrise is at 7:03 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.7h.

How high is the UV index in September?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Terra Haute, GA

Average temperature in September - Terra Haute, GA
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (61.7°F).

  • Average low temperature in September: 73°F

The month with the highest average low temperature is August (76.1°F).
The coldest month (with the lowest average low temperature) is January (46°F).

Average pressure in September
Terra Haute, GA

Average pressure in September - Terra Haute, GA
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

Average wind speed in September
Terra Haute, GA

Average wind speed in September - Terra Haute, GA
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
Terra Haute, GA

Average humidity in September - Terra Haute, GA
  • Average humidity in September: 77%

The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September
Terra Haute, GA

Average rainfall in September - Terra Haute, GA
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.18").

Average rainfall days in September
Terra Haute, GA

Average rainfall days in September - Terra Haute, GA
  • Average rainfall days in September: 16.6 days

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8.3 days).

Average snowfall days in September
Terra Haute, GA

Average snowfall days in September - Terra Haute, GA
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Terra Haute, GA

Average daylight in September / Average sunshine in September - Terra Haute, GA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in September
Terra Haute, GA

Average sunshine days in September - Terra Haute, GA
  • Average sunshine days in September: 11.7 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (7 days).

Average UV index in September
Terra Haute, GA

Average UV index in September - Terra Haute, GA
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

Average cloud cover in September
Terra Haute, GA

Average cloud cover in September - Terra Haute, GA
  • Average cloud cover in September: 31

The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are May and July (Cloud cover 27).

Average visibility in September
Terra Haute, GA

Average visibility in September - Terra Haute, GA
  • 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).

Terra Haute, Georgia, USA

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