The weather in Fort Collins in August is hot. The average temperatures are between 15°C and 31°C. Usually the days in August are hot while the nights are a bit cooler.
You can expect up to 3 rainy days in Fort Collins during the month of August.
Our weather forecast can give you a great sense of what weather to expect in Fort Collins in August 2026.
If you’re planning to visit Fort Collins in the near future, we highly recommend that you review the 14 day weather forecast for Fort Collins before you arrive.
Temperatures
31° / 15°
Rainy Days
2
Snowy Days
0
Dry Days
29
Rainfall
28
mm
Sun Hours
11.9
Hrs
