August weather forecast
Chatham, NY

Weather in August

August, the last month of the summer in Chatham, is another warm month, with an average temperature ranging between min 57.2°F (14°C) and max 78.8°F (26°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a still warm 78.8°F (26°C). The average low-temperature, in August, is 57.2°F (14°C).

Humidity

The average relative humidity in August is 78%.

Rainfall

In Chatham, New York, in August, it is raining for 13.4 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, in Chatham, there are 135.1 rainfall days, and 20.39" (518mm) of precipitation is accumulated.

Snowfall

In Chatham, New York, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 51min.
On the first day of August in Chatham, sunrise is at 5:47 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:30 pm EDT.

Sunshine

The months with the most sunshine in Chatham are July and August, with an average of 10.3h of sunshine.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index in Chatham. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the average humidity in August in Chatham?

In Chatham, New York, the average relative humidity in August is 78%.

How many days does it rain in August in Chatham?

In August, in Chatham, the rain falls for 13.4 days. Throughout August, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Chatham?

June through September are months without snowfall.

How many hours of daylight does Chatham have in August?

In August, the average day length is 13h and 51min.

When is the sunrise / sunset in August in Chatham?

On the first day of August in Chatham, New York, sunrise is at 5:47 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:30 pm EDT.

What are the months with the most sunshine in Chatham?

July and August, with an average of 10.3h of sunshine, are months with the most sunshine in Chatham, New York.

How long on average sun shines in August in Chatham?

The average sunshine duration in August in Chatham is 10.3h.

What are the months with the highest UV index in Chatham?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Chatham.

What is the UV index reading in August in Chatham?

The average daily maximum UV index in August in Chatham, New York, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.

Average temperature in August
Chatham, NY

Average temperature in August - Chatham, NY
  • Average high temperature in August: 78.8°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in August: 57.2°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

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Average pressure in August
Chatham, NY

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

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Chatham, NY

Average wind speed in August - Chatham, NY
  • Average wind speed in August: 5mph

The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in August
Chatham, NY

Average humidity in August - Chatham, NY
  • Average humidity in August: 78%

The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in August
Chatham, NY

Average rainfall in August - Chatham, NY
  • Average rainfall in August: 1.85"

The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in August
Chatham, NY

Average rainfall days in August - Chatham, NY
  • Average rainfall days in August: 13.4 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.7 days).

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Average snowfall in August
Chatham, NY

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

The month with the highest snowfall is March (3.9").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Chatham, NY

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

The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Chatham, NY
  • Average daylight in August: 13h and 51min

The month with the longest days is June (Average daylight: 15h and 14min).
The month with the shortest days is December (Average daylight: 9h and 8min).

  • Average sunshine in August: 10.3h

The months with the most sunshine are July and August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 3.8h).

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Average sunshine days in August
Chatham, NY

Average sunshine days in August - Chatham, NY
  • Average sunshine days in August: 14.7 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is June (12.5 days).

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Average UV index in August
Chatham, NY

Average UV index in August - Chatham, NY
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in August
Chatham, NY

Average cloud cover in August - Chatham, NY
  • Average cloud cover in August: 35

The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 35).

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Average visibility in August
Chatham, NY

Average visibility in August - Chatham, NY
  • Average visibility in August: 5mi

The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).

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