July weather forecast
Letcher, SD

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Weather in July

July, like June, in Letcher, South Dakota, is another warm summer month, with temperature in the range of an average high of 85.6°F (29.8°C) and an average low of 64.6°F (18.1°C).

Temperature

July, with its high-temperature average of 85.6°F (29.8°C) and a low-temperature average of 64.6°F (18.1°C), is the warmest month.

Heat index

In July, the heat index is estimated at a tropical 93.2°F (34°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
The standards for the heat index are set for locations in shade and under light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. 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 especially crucial for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

In July, the average relative humidity in Letcher is 67%.

Rainfall

In Letcher, in July, it is raining for 10.5 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 93.2 rainfall days, and 11.3" (287mm) of precipitation is accumulated.

Snowfall

In Letcher, snow does not fall in May through September.

Daylight

In Letcher, the average length of the day in July is 15h and 5min.
On the first day of July, sunrise is at 5:54 am and sunset at 9:18 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 8:56 pm CDT.

Sunshine

The month with the most sunshine is July, with an average of 11.1h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Letcher. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In July, the maximum UV index of 6 translates into these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What is the hottest time of year in Letcher?

In Letcher, temperatures reach their average annual highs in July, measuring 85.6°F (29.8°C) and a minimum average of 64.6°F (18.1°C).

How hot is July in Letcher?

The average high-temperature and low-temperature in Letcher during July are 85.6°F (29.8°C) and 64.6°F (18.1°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in July is estimated at 93.2°F (34°C).

What is the average humidity in July in Letcher?

In Letcher, South Dakota, the average relative humidity in July is 67%.

How many days does it rain in July in Letcher?

In Letcher, during July, the rain falls for 10.5 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow in Letcher?

May through September are months without snowfall in Letcher.

How many hours of daylight does Letcher have in July?

In Letcher, South Dakota, the average day length in July is 15h and 5min.

When is the sunrise / sunset in July in Letcher?

On the first day of July in Letcher, South Dakota, sunrise is at 5:54 am and sunset at 9:18 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 8:56 pm CDT.

What month has the most sunshine in Letcher?

With an average of 11.1h of sunshine, July has the most sunshine of the year.

How long on average sun shines in July in Letcher?

In July, the average sunshine duration is 11.1h.

What is the month with the highest UV index in Letcher?

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

What is the UV index intensity in July in Letcher?

The average daily maximum UV index in July in Letcher, South Dakota, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to 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
Letcher, SD

Average temperature in July - Letcher, SD
  • Average high temperature in July: 85.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (24.4°F).

  • Average low temperature in July: 64.6°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).

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Average pressure in July
Letcher, SD

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

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

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Average wind speed in July
Letcher, SD

Average wind speed in July - Letcher, SD
  • Average wind speed in July: 8.6mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).

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Average humidity in July
Letcher, SD

Average humidity in July - Letcher, SD
  • Average humidity in July: 67%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are September and October (63%).

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Average rainfall in July
Letcher, SD

Average rainfall in July - Letcher, SD
  • Average rainfall in July: 1.54"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February and November (0.28").

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Average rainfall days in July
Letcher, SD

Average rainfall days in July - Letcher, SD
  • Average rainfall days in July: 10.5 days

The month with the highest number of rainy days is June (13.6 days).
The month with the least rainy days is February (1.9 days).

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Average snowfall in July
Letcher, SD

Average snowfall in July - Letcher, SD
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Letcher, SD

Average snowfall days in July - Letcher, SD
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (8.7 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
Letcher, SD

Average daylight in July / Average sunshine in July - Letcher, 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: 9h and 0min).

  • Average sunshine in July: 11h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in July
Letcher, SD

Average sunshine days in July - Letcher, SD
  • Average sunshine days in July: 17.8 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.8 days).

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Average UV index in July
Letcher, SD

Average UV index in July - Letcher, 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 January (UV index 1).

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Average cloud cover in July
Letcher, SD

Average cloud cover in July - Letcher, SD
  • Average cloud cover in July: 22

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 22).

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Average visibility in July
Letcher, SD

Average visibility in July - Letcher, SD
  • Average visibility in July: 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).

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Letcher, South Dakota, USA

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