By Cloudnine Weather LLC

  • Category: Weather
  • Release Date: 2016-09-14
  • Current Version: 1.5.2
  • Adult Rating: 4+
  • File Size: 53.46 MB
  • Developer: Cloudnine Weather LLC
  • Compatibility: iOS 12.0+
Score: 4.7
From 43 Ratings


OpenSummit is your personal weather forecaster for the mountains. Plan your next mountain adventure with the best hourly weather forecasts for over 1,000 locations across the United States. Conveniently displayed on your iOS device, this valuable weather information will help you make well-informed, timely decisions on your next mountain adventure. -Chance of Precipitation -Lightning Potential -Temperature -Wind Speed & Direction -Cloud Cover Detailed hourly forecasts for the next two days are free. View the 3-5 day hourly forecast by upgrading to All-Access. — All-Access, In-App Purchase — Payment for All-Access entitles you to All-Access usage and its features. All-Access is an auto-renewable subscription, which will renew yearly at $19.99. Payment will be charged to the user's iTunes Account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. The account will be charged for renewal within 24-hours prior to the end of the current period and identify the cost of the renewal at that time. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Full terms and conditions can be found here: and Sales through Apple iTunes will be governed by Apple’s refund policy. We value all of our customers and encourage you to provide feedback on your experience. Please get in touch with us at


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Must-have tool

This resource is a must-have. I have the all-access pass with OpenSnow and Open Summit comes with it. Both are worth having by themselves. OpenSummit's peak-specific forecasts are a crucial tool in assessing mountain weather (along with other resources to confirm, of course). Cross-reference resources always.
By Bwa236

Great and detailed forecasting

My go to for specific, and detailed forecasting before venturing outdoors.
By antjweaver

Indispensable App for Hikers

I hike or summit peaks in Colorado year-round and this is my go-to app for planning and making sure I don’t get into dangerous or unpleasant weather situations. I love the five-day layout that color codes each day by the forecasted weather so I can tell at a glance when to plan my hikes. If I am going on a day of marginal weather, the hourly forecast has proved accurate and helpful to time my start and finish to avoid severe weather. I am impressed at how many peaks are covered by the forecast and always find one that is where or near I am going. This is a must-have app for any serious (or even casual) Colorado hiker.
By Colintre

My go to app

This is the most helpful app I have when planning mountain adventures and the All Access subscription is worth the cost. Reliable data for the backcountry. Well done.
By lackeye

Hey mister

Wish I had discovered this app long before now! Keep on doing what you do.
By :)11ian

Useful, easy, accurate, a must have!

Excellent app for mountain weather forecasts with lots of useful additional info all in one place! I’ve used it often to plan hikes and climbs and found the accuracy to be spot on. I wouldn’t think of going into the mountains without checking OpenSummit first.
By Love2ski&climb

An excellent way to get summit weather predictions quickly

I’ve been using the app for all of my 14er’s this summer, and has been great. Quick and accurate up to date forecasts in seconds. Highest possible recommendation

The best

The very best local forecast that I have used.
By mkyqwertyui

Great for trip planning on the mountains

Thanks for making a great guide for outdoor travel! Super helpful to know what the summit will look like
By GingeyBean

Love this App

I’ve loved this app since it came out, but the additional detail re: wind and cloud cover is amazing—thanks!
By Kelbel90


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