Fontana Weather in September

Thinking of visiting Fontana in September? Expect very high temperatures reaching 33°C (91°F) during the day, dropping to 17°C (63°F) at night, with minimal rainfall.

Rainfall in Fontana in September

Climate statistics over the past 30 years suggest around a single day of rain, with 4.7 mm (0.2 in) average for the month. Any rain that does arrive is likely to be fairly light and short-lived.

Temperature in Fontana in September

The perfect temperature in Fontana in September makes it a solid month to visit, with 33°C (91°F) during the day and 17°C (63°F) at night. Mornings and evenings are often more comfortable than the peak afternoon hours. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Fontana in September

Expect a lot of sunshine this month, with about 290 hours of sun. These sunny conditions add to the overall experience.

Should you favor a climate that's both dry and comfortably warm, January, February, March, April, May, October and November typically offer 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.

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 Fontana's climate page.

Fontana Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 3%  

Precipitation 4.7 mm (0.2 in)  

Rainy days a single day  

Sunshine 290 hours *  

Percentage Sunshine *  

* Data from: Corona, the United States of America (27 KM, 16 Miles).

What to Wear in Fontana in September

Hot weather in September means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. With minimal rainfall expected, you can leave the rain gear at home. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Fontana 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 Fontana's climate page.

More climate data for Fontana

Temperature Rainfall Sunshine

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