August weather forecast
Evanston, WY

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Weather in August

In August, Evanston's summer continues in full force, though temperatures slide slightly from the peak experienced in July. Witness the lowest recorded rainfall for the year at 0.51" (13mm), signifying the continuation of the warm, dry summer. As outdoor activities prevail, locals and visitors alike enjoy the beauty of Evanston's natural landscape. August bids farewell to the peak summer heat, transitioning into September's weather, which commences the winding down of summer temperatures.

Temperature

At the onset of August, Evanston records an average high-temperature of a still warm 77.5°F (25.3°C), showing little deviation from the preceding month. With a notable disparity from daily peak temperatures, the average low-temperature settles at a fresh 51.4°F (10.8°C) throughout August.

Humidity

August is the least humid month in Evanston, with an average relative humidity of 39%.

Rainfall

August is the month with the least rainfall in Evanston. Rain falls for 7.3 days and accumulates 0.51" (13mm) of precipitation.

Snowfall

In Evanston, snow does not fall in July and August.

Daylight

In Evanston, the average length of the day in August is 13h and 46min.
On the first day of the month, sunrise is at 6:20 am and sunset at 8:40 pm. On the last day of August, sunrise is at 6:50 am and sunset at 7:57 pm MDT.

Sunshine

With an average of 12h of sunshine, August has the most sunshine of the year.

UV index

The months with the highest UV index in Evanston, Wyoming, are June through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 5 in August translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

What are August temperatures in Evanston?

The high-temperature, in August, in Evanston, records 77.5°F (25.3°C), while the low-temperature is 51.4°F (10.8°C).

What is the least humid month in Evanston?

With an average relative humidity of 39%, August is the least humid month.

What is the average humidity in August in Evanston?

In Evanston, the average relative humidity in August is 39%.

What is the driest month in Evanston?

The month with the least rainfall in Evanston, Wyoming, is August, when the rain falls for 7.3 days and typically collects 0.51" (13mm) of precipitation.

How many days does it rain in August in Evanston?

In Evanston, Wyoming, during August, the rain falls for 7.3 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When it does not snow in Evanston?

July and August are months without snowfall.

Does it snow in Evanston in August?

In Evanston, in August, it doesn't snow. In September, it regularly snows.

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

In August, the average day length in Evanston, Wyoming, is 13h and 46min.

When are sunrise and sunset in August in Evanston?

On the first day of August, sunrise is at 6:20 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 7:57 pm MDT.

What month has the most sunshine in Evanston?

August has the most sunshine of the year in Evanston, Wyoming, with an average of 12h of sunshine.

How many hours of sunshine does Evanston have in August?

The average sunshine duration in August in Evanston, Wyoming, is 12h.

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

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index intensity in August in Evanston?

The average daily maximum UV index in August in Evanston, Wyoming, is 5. A UV Index reading of 3 to 5 represents 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
Evanston, WY

Average temperature in August - Evanston, WY
  • Average high temperature in August: 77.5°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.4°F).

  • Average low temperature in August: 51.4°F

The month with the highest average low temperature is July (51.6°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure in August
Evanston, WY

Average pressure in August - Evanston, WY
  • Average pressure in August: 29.93"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Evanston, WY

Average wind speed in August - Evanston, WY
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in August
Evanston, WY

Average humidity in August - Evanston, WY
  • Average humidity in August: 39%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in August
Evanston, WY

Average rainfall in August - Evanston, WY
  • Average rainfall in August: 0.51"

The wettest months (with the highest rainfall) are April and May (1.38").
The driest month (with the least rainfall) is August (0.51").

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Average rainfall days in August
Evanston, WY

Average rainfall days in August - Evanston, WY
  • Average rainfall days in August: 7.3 days

The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is February (5.5 days).

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Average snowfall in August
Evanston, WY

Average snowfall in August - Evanston, WY
  • Average snowfall in August: 0"

The month with the highest snowfall is March (10").
The months with the least snowfall are July and August (0").

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Average snowfall days in August
Evanston, WY

Average snowfall days in August - Evanston, WY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (16.3 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in August /
Average sunshine in August
Evanston, WY

Average daylight in August / Average sunshine in August - Evanston, WY
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).

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Average sunshine days in August
Evanston, WY

Average sunshine days in August - Evanston, WY
  • Average sunshine days in August: 16.8 days

The month with the most sunshine days is June (19.5 days).
The month with the least sunshine days is April (10.8 days).

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Average UV index in August
Evanston, WY

Average UV index in August - Evanston, WY
  • Average UV index in August: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are November and December (UV index 1).

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Average cloud cover in August
Evanston, WY

Average cloud cover in August - Evanston, WY
  • Average cloud cover in August: 10

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 10).

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Average visibility in August
Evanston, WY

Average visibility in August - Evanston, WY
  • 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 and February (4mi).

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Evanston, Wyoming, USA

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