2025 Compare Cities Climate:
Johnston, IA vs Altadena, CA

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Highlights
- Altadena has 37.3% less rainy days than Johnston.
- Altadena has 44.2% more Sunny Days than Johnston.
- On the BestPlaces comfort index, Altadena scores 31.9% better than Johnston
 Johnston, IAAltadena, CAUnited States
 Rainfall  Unlock2338
 Snowfall34  Unlock28
 Precipitation  Unlock37106
 Sunny199  Unlock205
 Avg. July High  Unlock8686
 Avg. Jan. Low13  Unlock22
 Comfort Index (higher=better)  Unlock9.17
 UV Index4  Unlock4.3
 Elevation  Unlock13582443
Reviews for Johnston    2 Reviews

Over 6 years ago

Strong National Guard presence and very family-friendly. The library is the best one that I've ever visited. We moved here for the Army two years ago and will be leaving  More

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Over 16 years ago

Everyone here is rich. Really, really,  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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