Try this. Go to "Insert" and choose shape. Select a box and make it the size you need for your text. Leave the color it comes out as alone for now. Now go back to the "Insert" tab and choose "Text Box". Put the text box inside the box you made. Type in your text. You may have to change the font color to see it. Now click on the box you inserted and then click on "Arrange" under the "Home" tab. Now click on the "Bring to Front" option. Now right click on the box and then click "Format Shape" and check the "No Fill" box and the "No Line" box. Now when you insert another picture (weather chart) your text should stay visible.