weather in denver in september 2023

HaC 2025

2 min read 18-03-2025

Meta Description: Planning a trip to Denver in September 2023? Discover what to expect from the weather! This detailed guide covers average temperatures, rainfall, sunshine hours, and more, helping you pack perfectly for your Denver adventure. Enjoy stunning mountain views and pleasant days, but be prepared for occasional afternoon thunderstorms. Don't miss our packing tips and things to do!

Denver's Delightful September: A Blend of Summer and Fall

September in Denver offers a delightful transition from summer's warmth to autumn's crispness. While you can still enjoy plenty of sunshine and mild temperatures, the evenings begin to cool down, creating a pleasant atmosphere perfect for outdoor activities. This makes it an ideal time to visit the Mile High City. This guide will explore what you can expect from Denver's weather in September 2023.

Average Temperatures in September

Denver's average high temperature in September typically hovers around 72°F (22°C). Evenings are noticeably cooler, with average lows dipping down to around 48°F (9°C). This variation means you'll need layers in your packing. But generally, it's a comfortable range for most.

Rainfall and Sunshine

September sees a decrease in rainfall compared to the summer months. Expect relatively dry conditions, with an average rainfall of around 1.5 inches. However, afternoon thunderstorms are still possible, especially later in the month. Plenty of sunshine hours remain, making it ideal for hiking and enjoying outdoor events.

What to Expect: Daily Weather Patterns

Mornings: Generally sunny and pleasant, with mild temperatures perfect for a leisurely breakfast or a hike.
Afternoons: Temperatures rise, reaching their peak in the late afternoon. This is when the possibility of afternoon thundershowers increases.
Evenings: Temperatures drop significantly as the sun sets. Pack layers for cooler evenings, particularly if you plan on being outside after dark.

What to Pack for a September Trip to Denver

Packing for Denver in September requires versatility. Consider these essential items:

Lightweight layers: T-shirts, long-sleeved shirts, and a light jacket or sweater are essential.
Rain jacket: While rainfall is relatively low, afternoon showers are possible, so a waterproof jacket is recommended.
Comfortable walking shoes: You'll likely be doing a lot of walking, so comfortable shoes are crucial.
Sunscreen and sunglasses: Even with cooler temperatures, the sun can still be strong at high altitude.
Hat: Provides protection from both the sun and any unexpected showers.

Popular September Activities in Denver

September offers a wealth of outdoor activities and events in Denver:

Hiking: Take advantage of the pleasant weather to explore Denver's numerous hiking trails, such as those in Red Rocks Amphitheatre or Lookout Mountain. Check trail conditions before you go!
Brewery Tours: Denver has a thriving craft beer scene. Enjoy a brewery tour and sample some of the local brews.
Outdoor Concerts: Many outdoor concerts and festivals take place in September.
Farmers Markets: Browse the local produce and enjoy the vibrant atmosphere of Denver's farmers markets.

Staying Safe in September's Weather

While September offers favorable weather, always check the daily forecast before heading out for any outdoor activity. Afternoon thunderstorms can appear suddenly, so be prepared to seek shelter if needed. Remember to stay hydrated, especially if you are engaging in outdoor activities.

September in Denver: A Final Word

September in Denver provides a fantastic opportunity to enjoy the city's many attractions with pleasant weather. By understanding the typical weather patterns and packing accordingly, you'll be well-prepared for a memorable experience. Remember to check the detailed forecast closer to your travel dates for the most up-to-date information. Enjoy your trip to the Mile High City!