August weather forecast
Casselton, ND

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Weather in August

Casselton's weather remains bracing in August, with the average temperature mirroring July's peak at 80.8°F (27.1°C). With such summery conditions continuing, the citizens enjoy extended daylight hours perfect for recreational activities. While the precipitous declines of rainfall and humidity accentuate August's idyllic summer environment, these conditions also encourage quick dips at the local swimming pool. The closing days of August hint at the seasonal shift towards the cool breezes and warm hues of September. Casselton thus cherishes the dwindling days of summer, reminiscing over a season well celebrated.

Temperature

In Casselton, the months of July and August register the highest average temperatures, peaking at 80.8°F (27.1°C).

Heat index

The heat index value during August is estimated at 82.4°F (28°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

The average relative humidity in August is 63%.

Rainfall

In Casselton, during August, the rain falls for 10.8 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 102.6 rainfall days, and 17.8" (452mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Casselton, North Dakota, the average length of the day in August is 14h and 9min.
On the first day of the month, sunrise is at 6:09 am and sunset at 9:00 pm. On the last day of August, sunrise is at 6:48 am and sunset at 8:09 pm CDT.

Sunshine

The average sunshine in August is 10.7h.

UV index

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In August, a daily UV index of 5 turns into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

Casselton witnesses its average highest temperatures during July and August, peaking at 80.8°F (27.1°C).

What are August temperatures in Casselton?

The average high-temperature and low-temperature during August are 80.8°F (27.1°C) and 59.5°F (15.3°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 82.4°F (28°C).

What is the average humidity in August?

In Casselton, the average relative humidity in August is 63%.

How many days does it rain in August in Casselton?

In August, the rain falls for 10.8 days. Throughout August, 1.69" (43mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

What is the average length of the day in August?

The average day length in August in Casselton is 14h and 9min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:09 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 8:09 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 10.7h.

How high is the UV index in August?

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health risk 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
Casselton, ND

Average temperature in August - Casselton, ND
  • Average high temperature in August: 80.8°F

The warmest months (with the highest average high temperature) are July and August (80.8°F).
The month with the lowest average high temperature is January (16.7°F).

  • Average low temperature in August: 59.5°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (3.2°F).

Average pressure in August
Casselton, ND

Average pressure in August - Casselton, ND
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in August
Casselton, ND

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

The windiest month (with the highest average wind speed) is October (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).

Average humidity in August
Casselton, ND

Average humidity in August - Casselton, ND
  • Average humidity in August: 63%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is September (62%).

Average rainfall in August
Casselton, ND

Average rainfall in August - Casselton, ND
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in August
Casselton, ND

Average rainfall days in August - Casselton, ND
  • Average rainfall days in August: 10.8 days

The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (1.9 days).

Average snowfall in August
Casselton, ND

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

The month with the highest snowfall is December (3.74").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Casselton, ND

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

The month with the highest number of snowfall days is December (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Casselton, ND
  • Average daylight in August: 14h and 1min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 30min).

Average sunshine days in August
Casselton, ND

Average sunshine days in August - Casselton, ND
  • Average sunshine days in August: 18.1 days

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is June (11 days).

Average UV index in August
Casselton, ND

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

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

Average cloud cover in August
Casselton, ND

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

The months with the most cloud cover are January and February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in August
Casselton, ND

Average visibility in August - Casselton, 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).

Casselton, North Dakota, USA

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