Table 2.

Sum or average temperatures in months IV–IX as compared to the long-term means (1951–2010), according to the Meteorological Station in Felin, Poland.

Years	Decade	IV	V	VI	VII	VIII	IX	ΣV–IX
2015	I	4.5	13.5	18.6	21.4	25.1	15.4	1045
	II	8.6	13.2	17.7	19.8	22.0	17.6	1053
	III	13.2	13.1	16.8	20.7	20.6	12.9	1041
	Mean	8.7	13.3	17.7	20.6	22.6	13.3	2960
2016	I	10.7	13.6	17.0	18.9	18.9	19.2	1034
	II	10.6	12.2	18.2	18.7	16.8	16.3	986
	II	7.9	19.2	22.4	22.0	19.6	12.1	1100
	Mean	9.7	15.1	19.2	19.9	18.8	15.8	3009
Means for 1951–2010	I	5.7	11.5	15.5	17.1	18.1	14.2	868
	II	6.9	13.3	15.9	18.1	17.2	12.2	891
	III	9.3	13.6	16.7	18.0	15.7	10.8	898
	Mean	7.3	12.8	16.0	17.7	17.0	12.4	2543