Copenhagen weather is really variable.
During winter the average temperature is about 0 C° and about 20 C° during summer, with peaks respectively in February and July.
Specially during spring and autumn the weather varies really fast and a beautiful day can easily become rainy and vice versa.
Click on the link below to see the current weather conditions in Copenhagen, clicking the link on the left you can see the weather forecast.
If you want to switch the metrics just check Celsius or Fahrenheit below the forecasts, the page will be reloaded with the chosen format.