The temperatures in Keystone in October are comfortable with low of 19°C and and high up to 25°C.
You can expect a few rainy days in Keystone during October, but usually the weather is comfortable in October.
Our weather forecast can give you a great sense of what weather to expect in Keystone in October 2025.
If you’re planning to visit Keystone in the near future, we highly recommend that you review the 14 day weather forecast for Keystone before you arrive.
Temperatures
25° / 19°
Rainy Days
1
Snowy Days
0
Dry Days
30
Rainfall
17
mm
Sun Hours
10.7
Hrs
