September weather forecast
Grove, OK

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Weather in September

September in Grove marks the departure from high summer temperatures, signaling the start of the Fall season. Rainfall volume lowers slightly separating it from the wetter months of summer. Daylight hours and the UV index reduce markedly, marking the end of the summer season. The wind starts to pick up slightly, though generally conditions remain calm. While the drop in temperature is noticeable, the weather is typically mild and pleasant.

Temperature

September signifies a gentle decline in Grove's average high-temperature, easing from a hot 89.2°F (31.8°C) in August to a warm 82°F (27.8°C). In Grove, the September nights cool down to an average low of 62.4°F (16.9°C).

Heat index

The heat index value during September is appraised at a tropical 87.8°F (31°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

In Grove, the average relative humidity in September is 72%.

Rainfall

In Grove, in September, it is raining for 12.4 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 143.6 rainfall days, and 32.52" (826mm) of precipitation is accumulated.

Snowfall

In Grove, snow does not fall in April, June through October.

Daylight

The average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 6:50 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:03 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 reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

What is the temperature in September?

Grove in September has an average high-temperature of 82°F (27.8°C) and an average low-temperature of 62.4°F (16.9°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is appraised at 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September is 72%.

How many days does it rain in September?

In Grove, in September, during 12.4 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

When it does not snow?

In Grove, snow does not fall in April, June through October.

What is the average length of the day in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:50 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:03 pm CDT.

How long on average sun shines in September?

In Grove, the average sunshine duration in September is 9.4h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Grove, OK

Average temperature in September - Grove, OK
  • Average high temperature in September: 82°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (44.4°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
Grove, OK

Average pressure in September - Grove, OK
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in September
Grove, OK

Average wind speed in September - Grove, OK
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

Average humidity in September
Grove, OK

Average humidity in September - Grove, OK
  • Average humidity in September: 72%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are August and October (70%).

Average rainfall in September
Grove, OK

Average rainfall in September - Grove, OK
  • Average rainfall in September: 2.83"

The wettest month (with the highest rainfall) is May (4.96").
The driest month (with the least rainfall) is February (1.65").

Average rainfall days in September
Grove, OK

Average rainfall days in September - Grove, OK
  • Average rainfall days in September: 12.4 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is December (7.5 days).

Average snowfall in September
Grove, OK

Average snowfall in September - Grove, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in September
Grove, OK

Average snowfall days in September - Grove, OK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Grove, OK

Average daylight in September / Average sunshine in September - Grove, OK
  • 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 months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

Average sunshine days in September
Grove, OK

Average sunshine days in September - Grove, OK
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is April (12.9 days).

Average UV index in September
Grove, OK

Average UV index in September - Grove, OK
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Grove, OK

Average cloud cover in September - Grove, OK
  • Average cloud cover in September: 26

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in September
Grove, OK

Average visibility in September - Grove, OK
  • 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).

Grove, Oklahoma, USA

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