According to Finland's rather modest official definition of summer, this is the first day of the summer. Based on the forecast for the next week, the diurnal average temperature will remain above 10 C. The daily maximum here was about 17 C today and the daily maximums will be between 16 C and 19 C while the nightly minimums will remain above 5 C. No more night frost. I connected the garden hose. In a week or so, birches will probably have fully grown leaves.
The cat is clearly happy about the change in the weather. She's been running around the yard this afternoon. We also won't have to bring those flower pots back into the house every evening from now on. My wife will probably start planting them soon.