Definition of "fair-weather" []

• Suitable or used only during fair weather: fair-weather hiking gear. (adjective)
• Present and dependable only in good times: fair-weather friends. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "They’ve proved not to be so compatible in disaster, what Mamaw would call fair-weather friends."
• "The praise the Sun poured on Ed Miliband after his kneejerk demand for Mr Clarke's head may have particularly spooked Mr Cameron if he discerned that his allies at News International were revealing themselves to be fair-weather friends."
• "This year it was indeed a splendidly sunny day, prompting the women of Paris to move from winter coats to le trench and bringing fair-weather joggers into the parks."