2025 Compare Cities Climate:
Longmont, CO vs Altadena, CA

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Highlights
- Altadena has 52.0% more rainy days than Longmont.
- Altadena has 16.2% more Sunny Days than Longmont.
- On the BestPlaces comfort index, Altadena scores 26.4% better than Longmont
 Longmont, COAltadena, CAUnited States
 Rainfall  Unlock2338
 Snowfall36  Unlock28
 Precipitation  Unlock37106
 Sunny247  Unlock205
 Avg. July High  Unlock8686
 Avg. Jan. Low13  Unlock22
 Comfort Index (higher=better)  Unlock9.17
 UV Index5.8  Unlock4.3
 Elevation  Unlock13582443
Reviews for Longmont    19 Reviews

I lived here for 4 years and it's pretty nice. It gets cold and stays cold for a good 8 months, but other than that I loved it. There are a lot of amenities. It is  More

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Over 6 years ago

I just move from other state to Longmont. In my opinion Longmont is one of the safest city in US which is have a low crime, its great city to raised family .Has a great  More

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Fantastic place to live. Four golf courses, many parks, 10 minutes to the foothills and 40 minutes from the Rockies, the location is hard to beat if you want to be 45  More

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Reviews for Altadena    1 Reviews

I live just above the 1500 foot elevation at the edge of the San Gabriel Mountains in the L.A. suburb of Altadena--just above Pasadena. We're above the low morning fog  More

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