<Tr> <Th> Average high ° C (° F) </Th> <Td> 11.9 (53.4) </Td> <Td> 13.0 (55.4) </Td> <Td> 15.2 (59.4) </Td> <Td> 17.7 (63.9) </Td> <Td> 22.8 (73) </Td> <Td> 26.9 (80.4) </Td> <Td> 30.3 (86.5) </Td> <Td> 30.6 (87.1) </Td> <Td> 26.5 (79.7) </Td> <Td> 21.4 (70.5) </Td> <Td> 15.9 (60.6) </Td> <Td> 12.6 (54.7) </Td> <Td> 20.4 (68.7) </Td> </Tr> <Tr> <Th> Daily mean ° C (° F) </Th> <Td> 7.5 (45.5) </Td> <Td> 8.2 (46.8) </Td> <Td> 10.2 (50.4) </Td> <Td> 12.6 (54.7) </Td> <Td> 17.2 (63) </Td> <Td> 21.1 (70) </Td> <Td> 24.1 (75.4) </Td> <Td> 24.5 (76.1) </Td> <Td> 20.8 (69.4) </Td> <Td> 16.4 (61.5) </Td> <Td> 11.4 (52.5) </Td> <Td> 8.4 (47.1) </Td> <Td> 15.2 (59.4) </Td> </Tr> <Tr> <Th> Average low ° C (° F) </Th> <Td> 3.1 (37.6) </Td> <Td> 3.5 (38.3) </Td> <Td> 5.2 (41.4) </Td> <Td> 7.5 (45.5) </Td> <Td> 11.6 (52.9) </Td> <Td> 15.3 (59.5) </Td> <Td> 18.0 (64.4) </Td> <Td> 18.3 (64.9) </Td> <Td> 15.2 (59.4) </Td> <Td> 11.3 (52.3) </Td> <Td> 6.9 (44.4) </Td> <Td> 4.2 (39.6) </Td> <Td> 10.0 (50) </Td> </Tr> <Tr> <Th> Record low ° C (° F) </Th> <Td> − 11.0 (12.2) </Td> <Td> − 4.4 (24.1) </Td> <Td> − 5.6 (21.9) </Td> <Td> 0.0 (32) </Td> <Td> 3.8 (38.8) </Td> <Td> 7.8 (46) </Td> <Td> 10.6 (51.1) </Td> <Td> 10.0 (50) </Td> <Td> 5.6 (42.1) </Td> <Td> 0.8 (33.4) </Td> <Td> − 5.2 (22.6) </Td> <Td> − 4.8 (23.4) </Td> <Td> − 11 (12.2) </Td> </Tr>

An independent state forming an enclave in rome spiritual centre of the roman catholic church