July weather forecast
Fort Thompson, SD

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Weather in July

July is a hot summer month in Fort Thompson, South Dakota, with an average temperature fluctuating between 88°F (31.1°C) and 66.2°F (19°C).

Temperature

Fort Thompson's July weather reaches an average high of 88°F (31.1°C) and an average low of 66.2°F (19°C), making it the warmest month.

Heat index

For July, the heat index is computed to be a torrid 95°F (35°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Heat index details are generally centered around shaded locations and a mild breeze. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In July, the average relative humidity in Fort Thompson is 60%.

Rainfall

In Fort Thompson, in July, it is raining for 11.8 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, in Fort Thompson, South Dakota, there are 107.6 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Fort Thompson, South Dakota.

Daylight

The average length of the day in July in Fort Thompson is 15h and 6min.
On the first day of July in Fort Thompson, sunrise is at 5:58 am and sunset at 9:24 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 9:02 pm CDT.

Sunshine

July has the most sunshine of the year in Fort Thompson, with an average of 11.4h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In July, an average UV index of 6 transforms into the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What time of the year is the hottest in Fort Thompson?

In Fort Thompson, July is the month with the highest recorded average temperatures, measuring a high of 88°F (31.1°C) and a low of 66.2°F (19°C).

How hot is July in Fort Thompson?

During July, Fort Thompson experiences an average high-temperature of 88°F (31.1°C) and a low-temperature of 66.2°F (19°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 95°F (35°C).

What is the average humidity in July in Fort Thompson?

The average relative humidity in July is 60%.

How many days does it rain in July in Fort Thompson?

In Fort Thompson, during July, the rain falls for 11.8 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When it does not snow in Fort Thompson?

May through September are months without snowfall.

How many hours of daylight does Fort Thompson have in July?

The average day length in July in Fort Thompson, South Dakota, is 15h and 6min.

When are sunrise and sunset in July in Fort Thompson?

In July, on the first day of the month, sunrise is at 5:58 am and sunset at 9:24 pm. On the last day of the month, in Fort Thompson, sunrise is at 6:25 am and sunset at 9:02 pm CDT.

What month has the most sunshine in Fort Thompson?

With an average of 11.4h of sunshine, July has the most sunshine of the year in Fort Thompson.

How many hours of sunshine does Fort Thompson have in July?

The average sunshine duration in July in Fort Thompson is 11.4h.

When is the highest UV index in Fort Thompson?

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

What is the UV index reading in July in Fort Thompson?

In Fort Thompson, South Dakota, the average daily maximum UV index in July 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 July
Fort Thompson, SD

Average temperature in July - Fort Thompson, SD
  • Average high temperature in July: 88°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in July: 66.2°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in July
Fort Thompson, SD

Average pressure in July - Fort Thompson, SD
  • Average pressure in July: 29.91"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in July
Fort Thompson, SD

Average wind speed in July - Fort Thompson, SD
  • Average wind speed in July: 9.2mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).

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Average humidity in July
Fort Thompson, SD

Average humidity in July - Fort Thompson, SD
  • Average humidity in July: 60%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is September (58%).

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Average rainfall in July
Fort Thompson, SD

Average rainfall in July - Fort Thompson, SD
  • Average rainfall in July: 2.28"

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is November (0.55").

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Average rainfall days in July
Fort Thompson, SD

Average rainfall days in July - Fort Thompson, SD
  • Average rainfall days in July: 11.8 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in July
Fort Thompson, SD

Average snowfall in July - Fort Thompson, SD
  • Average snowfall in July: 0"

The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Fort Thompson, SD

Average snowfall days in July - Fort Thompson, SD
  • Average snowfall days in July: 0 days

The months with the highest number of snowfall days are January and February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Fort Thompson, SD

Average daylight in July / Average sunshine in July - Fort Thompson, SD
  • Average daylight in July: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in July: 11h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in July
Fort Thompson, SD

Average sunshine days in July - Fort Thompson, SD
  • Average sunshine days in July: 15.9 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is April (11.8 days).

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Average UV index in July
Fort Thompson, SD

Average UV index in July - Fort Thompson, SD
  • Average UV index in July: 6

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

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Average cloud cover in July
Fort Thompson, SD

Average cloud cover in July - Fort Thompson, SD
  • Average cloud cover in July: 21

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in July
Fort Thompson, SD

Average visibility in July - Fort Thompson, SD
  • Average visibility in July: 6mi

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

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Fort Thompson, South Dakota, USA

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