weather conditions; state of the weather
Refers to the current or expected weather situation, often used when discussing plans or outdoor activities.
Let's decide whether to go on a picnic depending on tomorrow's weather conditions.
天気 is the general word for 'weather', while 天気具合 specifically emphasizes the condition or state of the weather.
天候 is a more formal term for weather, often used in forecasts or reports, whereas 天気具合 is more casual and conversational.
Compound of 天気 (weather) and 具合 (condition, state).