Meteorologist - Free and Open-Source Menu Bar Weather

Keeping track of current weather conditions and forecasts is a breeze (no pun intended) with the free and powerful menu bar app. Meteorologist, an open-source utility available on Sourceforge. I've user Meteorologist for years and have been impressed by a steady stream of updates. 

To save on space, the basic display on the menu bar is just a city name and the temperature, plus an icon displaying current conditions or if there are weather warnings. Clicking on the menu bar display gives you info for up to 12 user configurable cities.

You can also access the following for each city in your list:

• Details on current conditions
• The name of the weather provider
• Current radar
• Hourly forecast
• Extended forecast

The preferences menu is extensive and allows you to control the amount and variety of information presented along with its appearance. Meteorologist is suitable for international users since all of its measurement units are user configurable. There are seven weather information providers available to choose from and you can use different providers for different cities if you want to.