Longmont Weather in April

The climate in Longmont during April can be summarized as cool and reasonably dry.

April is in the spring in Longmont and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 1°C (34°F) is normal.

On average April is the 3rd wettest month of the year in Longmont with around 49mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.9 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Longmont in April 2024.