2025 Compare Cities Climate:
Potomac, MD vs Johnston, IA

Change Cities
Highlights
- Johnston has 14.5% less rainy days than Potomac.
- Johnston has 1.0% less Sunny Days than Potomac.
- On the BestPlaces comfort index, Johnston scores 5.5% worse than Potomac
 Potomac, MDJohnston, IAUnited States
 Rainfall  Unlock3638
 Snowfall17  Unlock28
 Precipitation  Unlock109106
 Sunny201  Unlock205
 Avg. July High  Unlock8686
 Avg. Jan. Low25  Unlock22
 Comfort Index (higher=better)  Unlock6.97
 UV Index4.1  Unlock4.3
 Elevation  Unlock8302443
Reviews for Potomac    2 Reviews

Over 17 years ago

Spring and Fall can be quite glorious when the leaves turn or the tulips pop out and the humidity is lower. Winter, while it has some splendid "snow days," goes on much  More

   |    Reply

Over 17 years ago

The Potomac area in Montgomery County, Maryland, has the best of everything. High schools rated in the top 5 in the State, easy access to the Nation's Capitol,  More

   |    Reply

Start Your Review of Potomac

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

   |    Reply

Over 16 years ago

Everyone here is rich. Really, really,  More

   |    Reply

Start Your Review of Johnston


Premium Subscription
Includes Cost of Living compares for child care, utilities, transportation, health, taxes, housing for home owners vs renters, weather, insurance premiums and so much more.


The premier source for comprehensive city data for over 30 years.

© Best Places. All rights reserved.