Pomona Weather in September

September in Pomona brings very high temperatures, with daytime highs of 33°C (91°F) and nights around 17°C (63°F). Only 4.3 mm (0.2 in) of rainfall is typical, making it a largely dry month.

Rainfall in Pomona in September

Records from the past 30 years suggest around a single day of rain, with 4.3 mm (0.2 in) average for the month. On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in Pomona in September

If you're visiting Pomona in September, expect perfect temperatures with highs of 33°C (91°F) and overnight lows of 17°C (63°F). It's usually most comfortable outside during the morning and later in the day. Nights cool down to 17°C (63°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 Pomona in September

Expect sunny days throughout the month, with an estimated 290 hours of sunshine. This makes it a pleasant time to visit Pomona.

For Pomona itself, January, February, March, April, May, October and November generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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 Pomona's climate page.

Pomona Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 3%  

Precipitation 4.3 mm (0.2 in)  

Rainy days a single day  

Sunshine 290 hours *  

Percentage Sunshine *  

* Data from: Corona, the United States of America (26 KM, 16 Miles).

What to Wear in Pomona in September

Warm but pleasant conditions in Pomona in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Pomona in September

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 Pomona's climate page.

More climate data for Pomona

Temperature Rainfall Sunshine

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