Mean monthly temperatures


	     I   II  III   IV    V   VI  VII VIII   IX    X   XI  XII

Helsinki C  -6   -6   -2   +3  +10  +15  +17  +16  +11   +6   +1   -3
         F  21   21   28   37   50   59   63   61   52   43   34   27

Oulu     C -11  -10   -6   +1   +8  +14  +16  +14   +8   +3   -3   -8
         F  12   14   21   34   46   57   61   57   46   37   27   18

Source: Statistics Finland