July weather forecast
Letcher, SD

Share

Weather in July

July, like June, in Letcher, South Dakota, is a moderately hot summer month, with an average temperature fluctuating between 64.6°F (18.1°C) and 85.6°F (29.8°C).

Temperature

With average high and low temperatures of 85.6°F (29.8°C) and 64.6°F (18.1°C) respectively, July is Letcher's warmest month.

Heat index

For July, the heat index is appraised at a tropical 93.2°F (34°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Understand that the heat index values take into account shaded locations and mild winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical 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

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

Rainfall

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

Snowfall

May through September are months without snowfall.

Daylight

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

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In July, a daily UV index of 6 turns into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. 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.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

With average high temperatures of 85.6°F (29.8°C) and lows of 64.6°F (18.1°C), July is the warmest month.

Is it hot in Letcher during July?

An average high-temperature, in July, in Letcher, is 85.6°F (29.8°C) and the average low-temperature is 64.6°F (18.1°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is appraised at 93.2°F (34°C).

What is the average humidity in July?

In July, the average relative humidity is 67%.

How much does it rain in July?

In Letcher, in July, it is raining for 10.5 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow?

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

How many hours of daylight does Letcher have in July?

In July, the average day length is 15h and 5min.

When are sunrise and sunset in July?

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.

What month has the most sunshine?

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

How long on average sun shines in July?

In Letcher, the average sunshine duration in July is 11.1h.

When is the highest UV index?

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

What is the UV index intensity in July?

The average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe 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 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Letcher, South Dakota, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location