Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 9.4h per day, so bright days are a strong part of the month. Rainfall averages 72mm, which is relatively low for holiday planning.
Monthly averages
Temp
21°C
Rain
72mm
Sun
9.4h
Weather score
52
Mixed
Mild
Average highs are around 21°C, so days are mild rather than hot.
Drier
Rainfall averages 72mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.4h per day, so bright days are a strong part of the month.
Map
Compare Longmont, Colorado, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
May21°C average high
May is close to Longmont's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
May72mm average rain
May is one of Longmont's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to March and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May9.4 hours average sun
May is brighter than Longmont's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
May52 weather score
May scores below Longmont's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.