Looking at this GEFS model it shows that cool and showery weather is the outlook for the next couple of weeks.
This GEFS graph shows the temperature at 1,500 metres and the bottom of the graph is rainfall. The temperature looks like it will below the 30 year average for the rest of this month. The temperature then looks like it will rise a little during the first week of May, but it looks like it will only recover to the mid teens. Looking at the precipitation is looks like it will remain showery. During the second week of May the members of the GEFS are split on what they think will happen to the temperatures, half think it will become warmer the other half thinks it will go cooler.
So the only certainty for the next two weeks is there is no sign of the return of spring like weather.