Pleasanton Weather in September

September in Pleasanton brings very high temperatures around 34°C (93°F) during the day, dropping to 21°C (70°F) at night, with quite a bit of rainfall expected, averaging around 100 mm (3.9 in) for the month.

Rainfall in Pleasanton in September

Records from the past 30 years suggest around 8 days of rain, with 100 mm (3.9 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Pleasanton in September

Pleasanton in September gets highs of 34°C (93°F) during the day and drops to 21°C (70°F) at night. For most visitors, the main thing to prepare for is the heat during the day. With overnight lows of 21°C (70°F), evenings stay pleasantly warm.

Sunshine in Pleasanton in September

Expect a lot of sunshine this month, with about 235 hours of sun. These sunny conditions add to the overall experience.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. February, March, April, November and December typically offer the best weather for Pleasanton.

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• January
• February
• March
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• May
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• September
• October
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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 Pleasanton's climate page.

Pleasanton Temperature in September

Min Temperature 21°C (70°F)  

Max Temperature 34°C (93°F)  

Chance of Rain 28%  

Precipitation 100 mm (3.9 in)  

Rainy days 8 days  

Humidity 68% *  

Sunshine 235 hours *  

Percentage Sunshine 63% *  

* Data from: San Antonio, the United States of America (50 KM, 31 Miles).

What to Wear in Pleasanton in September

Pack for serious heat in Pleasanton in September. 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Pleasanton in September

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

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 Pleasanton's climate page.

More climate data for Pleasanton

Temperature Rainfall Sunshine Humidity

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