The temperatures in Estes Park in September are quite cold with temperatures between 6°C and 20°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Estes Park during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
You can expect a few days of snow in Estes Park during September. It’s important to get out your snow boots and warm mittens to stay warm while you explore Estes Park.
Our weather forecast can give you a great sense of what weather to expect in Estes Park in September 2025.
If you’re planning to visit Estes Park in the near future, we highly recommend that you review the 14 day weather forecast for Estes Park before you arrive.
Temperatures
20° / 6°
Rainy Days
6
Snowy Days
3
Dry Days
21
Rainfall
94
mm
Sun Hours
9.4
Hrs
