Weather in Oulu for a month

M
T
W
T
F
S
S
21 may
+17
+8
22
+21
+7
23
+12
+9
24
+13
+8
+18
min: +7
+14
+8
+12
+8
+15
+6
+16
+10
+20
+9
+22
+11
+22
+14
+18
+13
+13
+9
4
+16
+9
5
+18
+13
6
+16
+14
7
+22
+12
8
+19
+12
9
+15
+10
10
+19
+10
11
+20
+13
12
+17
+13
13
+19
+11
14
+20
+11
15
+16
+13
16
+16
+10
17
+16
+11
18
+17
+13
19
+14
+11
20
+17
+10
21
+14
+12
22
+16
+12
23
+15
+10
24

Geomagnetic field

F, 25 may
3 points
Weak geomagnetic storm
S, 26 may
3 points
Weak geomagnetic storm
S, 27 may
2 points
Small perturbations