The weather in Grand Junction in October is very cold with temperatures between 2°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Grand Junction during the month of October. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Grand Junction can expect a few days of snow in October.
Our weather forecast can give you a great sense of what weather to expect in Grand Junction in October 2025.
If you’re planning to visit Grand Junction in the near future, we highly recommend that you review the 14 day weather forecast for Grand Junction before you arrive.
Temperatures
18° / 2°
Rainy Days
3
Snowy Days
1
Dry Days
27
Rainfall
40
mm
Sun Hours
10.6
Hrs
