August weather forecast
Sidney, MT

Weather in August

August, the last month of the summer, in Sidney, is another warm month, with average temperature varying between 62.2°F (16.8°C) and 82.8°F (28.2°C).

Temperature

In Sidney, the average high-temperature is practically the same as in July - a still moderately hot 82.8°F (28.2°C). In August, the average low-temperature is 62.2°F (16.8°C).

Heat index

The average heat index is estimated at 82.8°F (28.2°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, clothing, wind, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The least humid month in Sidney is August, with an average relative humidity of 45%.

Rainfall

In Sidney, it is raining for 8.8 days, with typically 0.87" (22mm) of accumulated precipitation. In Sidney, during the entire year, the rain falls for 85.7 days and collects up to 8.5" (216mm) of precipitation.

Snowfall

June through September are months without snowfall in Sidney.

Daylight

The average length of the day in Sidney, Montana, is 14.2h.

Sunshine

The average sunshine in August is 11.5h.

UV index

In Sidney, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Sidney?

In August, the average high-temperature is 82.8°F (28.2°C), and the average low-temperature is 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 82.8°F (28.2°C).

What is the least humid month in Sidney?

August is the least humid month, with an average relative humidity of 45%.

What is the average humidity in August in Sidney?

The average relative humidity in August is 45%.

How much does it rain in Sidney in August?

In Sidney, in August, it is raining for 8.8 days, with typically 0.87" (22mm) of accumulated precipitation.

When it does not snow in Sidney?

June through September are months without snowfall in Sidney, Montana.

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

In Sidney, the average length of the day in August is 14.2h.

How long on average sun shines in August in Sidney?

In Sidney, Montana, the average sunshine in August is 11.5h.

What is the UV index intensity in August in Sidney?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in August
Sidney, MT

Average temperature in August - Sidney, MT
  • Average high temperature in August: 28.2°C

The warmest month (with the highest average high temperature) is July (29°C).
The month with the lowest average high temperature is January (-4.8°C).

  • Average low temperature in August: 16.8°C

The month with the highest average low temperature is July (17.2°C).
The coldest month (with the lowest average low temperature) is January (-12.3°C).

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Average pressure in August
Sidney, MT

Average pressure in August - Sidney, MT
  • Average pressure in August: 1012.1mbar

The month with the highest atmospheric pressure is February (1021.5mbar).
The month with the lowest atmospheric pressure is June (1010.3mbar).

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Average wind speed in August
Sidney, MT

Average wind speed in August - Sidney, MT
  • Average wind speed in August: 14.9km/h

The windiest month (with the highest average wind speed) is April (17.9km/h).
The calmest month (with the lowest average wind speed) is February (14.8km/h).

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Average humidity in August
Sidney, MT

Average humidity in August - Sidney, MT
  • Average humidity in August: 45%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (45%).

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Average rainfall in August
Sidney, MT

Average rainfall in August - Sidney, MT
  • Average rainfall in August: 22mm

The wettest month (with the highest rainfall) is July (34mm).
The driest month (with the least rainfall) is January (6mm).

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Average rainfall days in August
Sidney, MT

Average rainfall days in August - Sidney, MT
  • Average rainfall days in August: 8.8 days

The month with the highest number of rainy days is June (11.4 days).
The months with the least rainy days are January and February (3.2 days).

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Average snowfall in August
Sidney, MT

Average snowfall in August - Sidney, MT
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (45mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in August
Sidney, MT

Average snowfall days in August - Sidney, MT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Sidney, MT

Average daylight in August / Average sunshine in August - Sidney, MT
  • Average daylight in August: 14.2h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in August: 11.5h

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is February (Average sunshine: 4.3h).

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Average sunshine days in August
Sidney, MT

Average sunshine days in August - Sidney, MT
  • Average sunshine days in August: 18.5 days

The month with the most sunshine days is September (20.7 days).
The month with the least sunshine days is April (15.8 days).

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Average UV index in August
Sidney, MT

Average UV index in August - Sidney, MT
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and February (UV index 1).

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Average cloud cover in August
Sidney, MT

Average cloud cover in August - Sidney, MT
  • Average cloud cover in August: 19

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 18).

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Average visibility in August
Sidney, MT

Average visibility in August - Sidney, MT
  • Average visibility in August: 10km

The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).

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