Denver Weather in September

September is one of the perfect months to visit Denver, with daytime temperatures of 20°C (68°F) and lows of 11°C (52°F) at night. Do note that quite a bit of rainfall is typical, averaging around 61 mm (2.4 in).

Rainfall in Denver in September

Looking at the last 30 years, the data shows about 12 days with rain, averaging 61 mm (2.4 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Denver in September

Denver has perfect weather in September, with days reaching 20°C (68°F) and nights cooling to 11°C (52°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 11°C (52°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 Denver in September

With about 144 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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 Kingdom, check out our Denver's climate page.

Denver Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 41%  

Precipitation 61 mm (2.4 in)  

Rainy days 12 days  

Sunshine 144 hours *  

Percentage Sunshine *  

* Data from: Peterborough, the United Kingdom (42 KM, 26 Miles).

What to Wear in Denver in September

For Denver in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Denver in September

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

Swimming

6/10

Cycling

10/10

Walking

10/10

Camping

8/10

Outdoor sports

10/10

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 Kingdom, check out our Denver's climate page.

More climate data for Denver

Temperature Rainfall Sunshine

See the full Denver climate overview or explore weather in the United Kingdom.