Grimshaw
Georgia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Grimshaw, GA

September, the first month of the autumn, in Grimshaw, is also a moderately hot month, with average temperature ranging between min 68.2°F (20.1°C) and max 84.7°F (29.3°C).

Temperature

In Grimshaw, the average high-temperature in September is relatively the same as in August - a warm 84.7°F (29.3°C). The average low-temperature, in September, is 68.2°F (20.1°C).

Heat index

The average heat index is calculated to a hot 94.8°F (34.9°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, pregnancy, differences in body mass, height, and shape). 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 particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in Grimshaw, Georgia, is 77%.

Rainfall

In Grimshaw, in September, it is raining for 13.1 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, there are 140.8 rainfall days, and 17.09" (434mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall in Grimshaw.

Daylight

In September, the average length of the day in Grimshaw is 12.4h.

Sunshine

The average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index in Grimshaw is 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Grimshaw?

In Grimshaw, in September, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 68.2°F (20.1°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), that calculates temperature value influenced by the moisture in the air, is appraised at 94.8°F (34.9°C).

What is the average humidity in September in Grimshaw?

In September, the average relative humidity in Grimshaw is 77%.

How much does it rain in Grimshaw in September?

In Grimshaw, in September, it is raining for 13.1 days, with typically 0.98" (25mm) of accumulated precipitation.

When it does not snow in Grimshaw?

March through December are months without snowfall.

How many hours of daylight does Grimshaw have in September?

In September, the average length of the day in Grimshaw, Georgia, is 12.4h.

How long on average sun shines in September in Grimshaw?

In Grimshaw, the average sunshine in September is 8.5h.

What is the UV index intensity in September in Grimshaw?

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in September - Grimshaw, GA
  • Average high temperature in September: 84.7°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 (56.1°F).

  • Average low temperature in September: 68.2°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

Average humidity in September - Grimshaw, GA
  • Average humidity in September: 77%

The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is January (71%).

Average rainfall in September - Grimshaw, GA
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is August (2.44").
The driest month (with the least rainfall) is November (0.75").

Average rainfall days in September - Grimshaw, GA
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (5.8 days).

Average snowfall in September - Grimshaw, GA
  • Average snowfall in September: 0"

Months with the highest snowfall are January and February (0.04").
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September - Grimshaw, GA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.3 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Grimshaw, GA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 5.4h).

Average UV index in September - Grimshaw, GA
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January and December (UV index 3).