Rancho Cucamonga Weather in August

August in Rancho Cucamonga brings very high temperatures around 34°C (93°F) during the day, dropping to 18°C (64°F) at night, with minimal rainfall.

Rainfall in Rancho Cucamonga in August

Historically, the month has about 0 days of rain, averaging 1 mm (0.04 in) in total. If rain does fall, it tends to be very light and barely worth getting out an umbrella for.

Temperature in Rancho Cucamonga in August

Expect highs of 34°C (93°F) in Rancho Cucamonga in August, with nights dropping to around 18°C (64°F). It's usually most comfortable outside during the morning and later in the day. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. These are average temperatures, but occasional heat spikes are possible. Stay comfortable by wearing light clothing and drinking water.

Sunshine in Rancho Cucamonga in August

With approximately 351 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

August in Rancho Cucamonga can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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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 Rancho Cucamonga's climate page.

Rancho Cucamonga Temperature in August

Min Temperature 18°C (64°F)  

Max Temperature 34°C (93°F)  

Chance of Rain 1%  

Precipitation 1 mm (0.04 in)  

Rainy days 0 days  

Sunshine 351 hours *  

Percentage Sunshine *  

* Data from: Corona, the United States of America (25 KM, 16 Miles).

What to Wear in Rancho Cucamonga in August

Pack for serious heat in Rancho Cucamonga in August. Prioritize clothing that breathes and doesn't cling or stick. Lightweight cotton, linen, and moisture-wicking fabrics are ideal. A wide hat provides welcome shade. Dry conditions mean you won't need to worry about rain protection. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Rancho Cucamonga in August

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

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 Rancho Cucamonga's climate page.

More climate data for Rancho Cucamonga

Temperature Rainfall Sunshine

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