If you’re using Outlook from a country that recognizes Celsius as the national standard, then the default Fahrenheit temperature measurement system may not work for you. Or, perhaps you don’t like having the Weather displayed in the Outlook calendar at all? If either is the case, here is how you can fix it.
Click the File menu to enter backstage view and click the Options button.
In Outlook Options click the Calendar tab.
Now scroll all the way to the bottom of the page and you’ll find a Weather category. Here you can uncheck the “Show weather on the calendar” to disable it. Or just switch the temperature display between Celsius and Fahrenheit. Click OK to save the changes and exit.
Now your calendar will display the weather in the measurement system you prefer.
Or, if you disabled the weather the Search box will lengthen and take up the space previously used by the weather display.