August weather forecast
Grafton, ND

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Weather in August

August continues the reign of summer but hints at its eventual close. The luster of the season remains intact, with generous hours of sunshine. The precipitation drops to 1.18" (30mm) as compared to the previous high of July. August beautifully caps off the summer, making way for the gradual transition into the cooler months ahead. The changing weather in Grafton offers a multitude of outdoor opportunities before the arrival of the Fall season.

Temperature

Grafton records the warmest temperatures in August, averaging a high of 80.4°F (26.9°C) and a low of 59°F (15°C).

Humidity

The least humid month in Grafton is August, with an average relative humidity of 59%.

Rainfall

In Grafton, in August, it is raining for 9.2 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, in Grafton, there are 97.8 rainfall days, and 15.83" (402mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Grafton, the average length of the day in August is 14h and 16min.
On the first day of the month, sunrise is at 6:05 am and sunset at 9:06 pm. On the last day of August, sunrise is at 6:46 am and sunset at 8:12 pm CDT.

Sunshine

In August, the average sunshine in Grafton is 10.6h.

UV index

In August, the average daily maximum UV index in Grafton is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 5 in August translates into this advice:
Heed the precautions - It is counselled to guard against solar damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months in Grafton?

In Grafton, the peak temperatures are generally noted in August, averaging a high of 80.4°F (26.9°C) and a low of 59°F (15°C).

What is the average August temperature in Grafton?

An average high-temperature, in August, in Grafton, is 80.4°F (26.9°C) and the average low-temperature is 59°F (15°C).

What is the least humid month in Grafton?

With an average relative humidity of 59%, August is the least humid month.

What is the average humidity in August in Grafton?

In Grafton, the average relative humidity in August is 59%.

How much does it rain in Grafton in August?

In Grafton, North Dakota, during August, the rain falls for 9.2 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in Grafton?

In Grafton, North Dakota, snow does not fall in June through September.

What is the average length of the day in August in Grafton?

The average day length in August in Grafton is 14h and 16min.

When is the sunrise / sunset in August in Grafton?

In August, on the first day of the month, sunrise is at 6:05 am and sunset at 9:06 pm. On the last day of the month, in Grafton, sunrise is at 6:46 am and sunset at 8:12 pm CDT.

How long on average sun shines in August in Grafton?

The average sunshine duration in August in Grafton is 10.6h.

How high is the UV index in August in Grafton?

In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from 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 August
Grafton, ND

Average temperature in August - Grafton, ND
  • Average high temperature in August: 80.4°F

The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is January (14.7°F).

  • Average low temperature in August: 59°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).

Average pressure in August
Grafton, ND

Average pressure in August - Grafton, ND
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in August
Grafton, ND

Average wind speed in August - Grafton, ND
  • Average wind speed in August: 8.1mph

The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).

Average humidity in August
Grafton, ND

Average humidity in August - Grafton, ND
  • Average humidity in August: 59%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (59%).

Average rainfall in August
Grafton, ND

Average rainfall in August - Grafton, ND
  • Average rainfall in August: 1.18"

The wettest month (with the highest rainfall) is June (2.8").
The driest months (with the least rainfall) are January and February (0.55").

Average rainfall days in August
Grafton, ND

Average rainfall days in August - Grafton, ND
  • Average rainfall days in August: 9.2 days

The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (1.6 days).

Average snowfall in August
Grafton, ND

Average snowfall in August - Grafton, ND
  • Average snowfall in August: 0"

The month with the highest snowfall is December (3.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Grafton, ND

Average snowfall days in August - Grafton, ND
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Grafton, ND

Average daylight in August / Average sunshine in August - Grafton, ND
  • Average daylight in August: 14h and 2min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days in August
Grafton, ND

Average sunshine days in August - Grafton, ND
  • Average sunshine days in August: 19.8 days

The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is June (11.5 days).

Average UV index in August
Grafton, ND

Average UV index in August - Grafton, ND
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).

Average cloud cover in August
Grafton, ND

Average cloud cover in August - Grafton, ND
  • Average cloud cover in August: 24

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in August
Grafton, ND

Average visibility in August - Grafton, ND
  • Average visibility in August: 6mi

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

Grafton, North Dakota, USA

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