The weather in Longmont in July is hot. The average temperatures are between 17°C and 32°C. Usually the days in July are hot while the nights are a bit cooler.
You can expect about 3 to 8 days of rain in Longmont during the month of July. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Longmont in July 2025.
If you’re planning to visit Longmont in the near future, we highly recommend that you review the 14 day weather forecast for Longmont before you arrive.
Temperatures
32° / 17°
Rainy Days
3
Snowy Days
0
Dry Days
28
Rainfall
60
mm
Sun Hours
11.8
Hrs
