The temperatures in Longmont in June are comfortable with low of 14°C and and high up to 30°C.
You can expect about 3 to 8 days of rain in Longmont during the month of June. 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 June 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
30° / 14°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
44
mm
Sun Hours
11.9
Hrs
