Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The high-temperature average in August for Eureka is a still moderately hot 77.2°F (25.1°C), staying closely aligned with July's conditions. Nighttime temperatures in Eureka exhibit a substantial dip from daytime highs during August, averaging at a chilly 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 is August, when the rain falls for 6.1 days and typically collects 0.39" (10mm) of precipitation.Snowfall
June through August are months without snowfall in Eureka.Daylight
In Eureka, the average length of the day in August is 14h and 19min.On the first day of August, sunrise is at 6:14 am and sunset at 9:18 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 8:23 pm MDT.
Sunshine
August has the most sunshine of the year, with an average of 11.7h of sunshine.UV index
In Eureka, Montana, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 4 in August translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August in Eureka?
What is the least humid month in Eureka?
What is the average humidity in August in Eureka?
What is the driest month in Eureka?
How much does it rain in Eureka in August?
When it does not snow in Eureka?
Does it snow in Eureka in August?
What is the average length of the day in August in Eureka?
What time are sunrise and sunset in August in Eureka?
What month has the most sunshine in Eureka?
How long on average sun shines in August in Eureka?
How high is the UV index in August in Eureka?
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).
Average pressure in August
Eureka, MT
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
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).
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%).
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").
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).
Average snowfall in August
Eureka, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (10").
The months with the least snowfall are June, July and August (0").
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).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Eureka, MT
- Average daylight in August: 14h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in August: 11h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
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).
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).
The months with the lowest UV index are January, February, November and December (UV index 1).
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).
Average visibility in August
Eureka, MT
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Eureka, Montana, USA
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