import re
text = '''
2024-03-15 天气：晴 温度：15-25°C
2024-03-16 天气：多云 温度：12-20°C
2024-03-17 天气：小雨 温度：10-18°C
'''

pattern = r'(\d{4}-\d{2}-\d{2})\s*天气：([^ ]+)\s*温度：(\d+)-(\d+)°C'
matches = re.findall(pattern, text)

for match in matches:
    date, weather, low, high = match
    print(f'{date}: {weather}, {low}°C-{high}°C')