Hello Greg,
sorry for the delay with the reply.
If you are familiar with CSS it’s not a problem.
If you are using a shortcode – set the widget with available choices.
Besides standard options (font size, background, text color…) there is additional option – style (available only in shortcode).
Just set desired inline style eg.
style="float:right;width:200px"
in shortcode and widget will adopt this style as well.
If you are setting the widget in a conventional way (not shortcode), then add CSS rules in your CSS. Weather Atlas Widget is wrapped in a class .widget_weather_atlas
<div class="widget_weather_atlas">
</div>
so if you set the CSS correctly your additions to CSS should not interfere with the rest of your site