August weather forecast and climate
Eureka, MT

Weather in August

August, the last month of the summer, in Eureka, is another warm month, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 77.2°F (25.1°C).

Temperature

In Eureka, Montana, the average high-temperature in August is practically the same as in July - a still moderately hot 77.2°F (25.1°C). In Eureka, the average low-temperature is 45.1°F (7.3°C).

Humidity

August is the least humid month in Eureka, with an average relative humidity of 55%.

Rainfall

The month with the least rainfall in Eureka is August when the rain falls for 6.1 days and typically collects 0.39" (10mm) of precipitation.

Snowfall

In Eureka snow does not fall in June through August.

Daylight

The average length of the day in Eureka is 14.3h.

Sunshine

August has the most sunshine of the year in Eureka, with an average of 11.7h of sunshine.

UV index

In Eureka, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 in August transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 least humid month in Eureka?

With an average relative humidity of 55%, August is the least humid month in Eureka, Montana.

What is the average humidity in August in Eureka?

The average relative humidity in August in Eureka, Montana, is 55%.

What is the driest month in Eureka?

August is the month with the least rainfall in Eureka, Montana. Rain falls for 6.1 days and accumulates 0.39" (10mm) of precipitation.

How much does it rain in Eureka in August?

In Eureka, during August, the rain falls for 6.1 days and regularly aggregates up to 0.39" (10mm) of precipitation.

When it does not snow in Eureka?

In Eureka snow does not fall in June through August.

Does it snow in Eureka in August?

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

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

In Eureka, Montana, the average length of the day in August is 14.3h.

What month has the most sunshine in Eureka?

August has the most sunshine of the year, with an average of 11.7h of sunshine.

How long on average sun shines in August in Eureka?

In August, the average sunshine in Eureka is 11.7h.

How high is the UV index in August in Eureka?

In Eureka, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in August
Eureka, MT

Average temperature in August - Eureka, MT
  • Average high temperature in August: 77.2°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is December (25.5°F).

  • Average low temperature in August: 45.1°F

The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).

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Average pressure in August
Eureka, MT

Average pressure in August - Eureka, MT
  • Average pressure in August: 29.93"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in August
Eureka, MT

Average wind speed in August - Eureka, MT
  • Average wind speed in August: 3.9mph

The windiest month (with the highest average wind speed) is June (4.4mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).

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Average humidity in August
Eureka, MT

Average humidity in August - Eureka, MT
  • Average humidity in August: 55%

The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in August
Eureka, MT

Average rainfall in August - Eureka, MT
  • Average rainfall in August: 0.39"

The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.39").

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Average rainfall days in August
Eureka, MT

Average rainfall days in August - Eureka, MT
  • Average rainfall days in August: 6.1 days

The month with the highest number of rainy days is April (17 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in August
Eureka, MT

Average snowfall in August - Eureka, MT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (10").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Eureka, MT

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

The month with the highest number of snowfall days is December (22.1 days).
Months with the least snowfall days are June, July and August (0 days).

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

Average daylight in August / Average sunshine in August - Eureka, MT
  • Average daylight in August: 14.3h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in August: 11.7h

The month with the most sunshine is August (Average sunshine: 11.7h).
The month with the least sunshine is January (Average sunshine: 3.1h).

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Average sunshine days in August
Eureka, MT

Average sunshine days in August - Eureka, MT
  • Average sunshine days in August: 21.6 days

The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (6.3 days).

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Average UV index in August
Eureka, MT

Average UV index in August - Eureka, MT
  • Average UV index in August: 4

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in August
Eureka, MT

Average cloud cover in August - Eureka, MT
  • Average cloud cover in August: 15

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in August
Eureka, MT

Average visibility in August - Eureka, MT
  • Average visibility in August: 6mi

Months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).

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