August weather forecast
Katonah, NY

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Weather in August

August, the last month of the summer in Katonah, is another warm month, with an average temperature fluctuating between 81.1°F (27.3°C) and 64.9°F (18.3°C).

Temperature

With August's arrival, Katonah notes an average high-temperature of a still warm 81.1°F (27.3°C), closely following the trend of the preceding month. August in Katonah witnesses an average low-temperature hovering around a refreshing 64.9°F (18.3°C).

Heat index

The heat index in August is estimated at a tropical 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

In August, the average relative humidity is 73%.

Rainfall

In Katonah, in August, it is raining for 15.1 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 144.2 rainfall days, and 22.32" (567mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 47min.
On the first day of the month, sunrise is at 5:50 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:20 am and sunset at 7:28 pm EDT.

Sunshine

In August, the average sunshine is 10.4h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 during August translates into the following guidance:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

The high-temperature, in August, in Katonah, is 81.1°F (27.3°C), while the low-temperature averages to 64.9°F (18.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in August is estimated at 86°F (30°C).

What is the average humidity in August?

The average relative humidity in August is 73%.

How much does it rain in August?

In Katonah, in August, it is raining for 15.1 days, with typically 2.09" (53mm) of accumulated precipitation.

When it does not snow?

In Katonah, snow does not fall in June through September.

What is the average length of the day in August?

In Katonah, the average day length in August is 13h and 47min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:50 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:28 pm EDT.

How many hours of sunshine does Katonah have in August?

In Katonah, the average sunshine duration in August is 10.4h.

What are the months with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in August?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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 August
Katonah, NY

Average temperature in August - Katonah, NY
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in August
Katonah, NY

Average pressure in August - Katonah, NY
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Katonah, NY

Average wind speed in August - Katonah, NY
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in August
Katonah, NY

Average humidity in August - Katonah, NY
  • Average humidity in August: 73%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in August
Katonah, NY

Average rainfall in August - Katonah, NY
  • Average rainfall in August: 2.09"

The wettest month (with the highest rainfall) is July (2.68").
The driest month (with the least rainfall) is February (1.18").

Average rainfall days in August
Katonah, NY

Average rainfall days in August - Katonah, NY
  • Average rainfall days in August: 15.1 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in August
Katonah, NY

Average snowfall in August - Katonah, NY
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.95").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Katonah, NY

Average snowfall days in August - Katonah, NY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Katonah, NY

Average daylight in August / Average sunshine in August - Katonah, NY
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in August
Katonah, NY

Average sunshine days in August - Katonah, NY
  • Average sunshine days in August: 13.2 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is June (12.1 days).

Average UV index in August
Katonah, NY

Average UV index in August - Katonah, NY
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in August
Katonah, NY

Average cloud cover in August - Katonah, NY
  • Average cloud cover in August: 30

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August
Katonah, NY

Average visibility in August - Katonah, NY
  • Average visibility in August: 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).

Katonah, New York, USA

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