The weather in Longmont in December is very cold with temperatures between -5°C and 6°C, warm clothes are a must.
Longmont is going to be cold and wet in the month of December. Expect low temperatures and a few days of rain, so be sure to bundle up to avoid catching a cold.
You can expect a few days of snow in Longmont during December. It’s important to get out your snow boots and warm mittens to stay warm while you explore Longmont.
Our weather forecast can give you a great sense of what weather to expect in Longmont in December 2024.
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
6° / -5°
Rainy Days
2
Snowy Days
7
Dry Days
21
Rainfall
19
mm
Sun Hours
11.2
Hrs
