Eureka Weather in August

During August, Eureka experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 19°C (66°F). Expect quite a bit of rainfall. Around 79 mm (3.1 in) is typical.

Rainfall in Eureka in August

Typically around 8 days of rainfall are expected, averaging 79 mm (3.1 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Eureka in August

If you're visiting Eureka in August, expect highs of 31°C (88°F) and overnight lows around 19°C (66°F). For most visitors, the main thing to prepare for is the heat during the day. Nights cool down to 19°C (66°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Eureka in August

The city usually sees around 268 hours of sunlight, indicating many sunny days — a great month for sightseeing.

Should you favor a climate that's both dry and comfortably warm, October typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Eureka's climate page.

Eureka Temperature in August

Min Temperature 19°C (66°F)  

Max Temperature 31°C (88°F)  

Chance of Rain 27%  

Precipitation 79 mm (3.1 in)  

Rainy days 8 days  

Humidity 70% *  

Sunshine 268 hours *  

Percentage Sunshine 64% *  

* Data from: St. Louis, the United States of America (39 KM, 24 Miles).

What to Wear in Eureka in August

Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Eureka in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Eureka's climate page.

More climate data for Eureka

Temperature Rainfall Sunshine Humidity

See the full Eureka climate overview or explore weather in the United States of America.