Seasonality Pro offers meteorologists and weather enthusiasts the best way to visualize advanced weather model data on iPhone and iPad. Use Seasonality Pro to quickly access weather charts for forecasting. Here are just a few of the charts that are available:

• Surface temperature and pressure.
• 850mb temperature, heights, and wind.
• 500mb vorticity, heights, and wind.
• 250mb wind velocity and height contours.
• Simulated RADAR reflectivity.
• Wave heights and swell direction.

The charts Seasonality Pro displays are not just static images, but maps that you can interact with and explore. Each map is drawn in vector format, so as you zoom in, everything is redrawn with amazing detail limited only by the resolution of each weather model. The data can be inspected by dragging the map probe to see exact values from certain locations.

Weather models supported:
• GFS (1.0°, 0.5°, and 0.25°* resolution)
• NAM (12km resolution with several domains)
• WAVE (several ocean domains as well as the Great Lakes)
(* Subscription required for HRRR, HIRES, and GFS 0.25° model data)

By default, Seasonality Pro includes all the most common forecasting maps and then some. However, additional features and data are available for users with a VIP subscription (available as an in-app purchase):

• Create your own custom maps.
• Edit the display of individual map layers.
• View every variable and elevation level available from the models.
• Access the HRRR, HIRES, and GFS 0.25° model data.

So download Seasonality Pro today! You won’t find a better app for visualizing weather model data.

What’s New

Version 1.4

• Make the supported model list easy to update for better support of future changes.
• Add the Hourly 0.25° GFS model (VIP-only).
• Reworked a lot of code behind-the-scenes.

Ratings and Reviews

3.6 out of 5
10 Ratings

10 Ratings

Brogainz ,

Definitely handy

Very cool app with several features. Great for storm chasers who want to know about dry lines, low level jet, and NAM. Definitely recommend.

SedonaDenise ,

Love This App

Update: Appreciate the update! The load time and refresh time are a lot faster.

Wow! Now, I build my maps designed for our specific situation (summer monsoons, downdrops from the Colorado plateau, etc). Love it. Worth the wait. I use S-Go for quick review, Storm for local storms, and Windy for big picture.

Dlpoutre ,

App ok, VIP not worth it

This is a decent app, but save your $ on the VIP upgrade. You can get the same information for free on NWS.


Gaucho Software, LLC.
64.2 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2015-2019 Gaucho Software, LLC.
In-App Purchases
  1. Seasonality Pro 1 Year Subscription $29.99
  2. Seasonality Pro 6 Month Subscription $19.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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