| Record high, °C |
34 |
27 |
21 |
20 |
16 |
20 |
26 |
28 |
31 |
34 |
36 |
37 |
37 |
| Average high, °C |
21 |
15 |
8 |
4 |
3 |
5 |
10 |
15 |
21 |
24 |
26 |
26 |
15 |
| Average temperature, °C |
15 |
9 |
4 |
1 |
-1 |
1 |
5 |
9 |
15 |
18 |
20 |
20 |
10 |
| Average low, °C |
10 |
5 |
1 |
-2 |
-4 |
-3 |
1 |
5 |
9 |
12 |
14 |
14 |
5 |
| Record low, °C |
2 |
-6 |
-13 |
-19 |
-22 |
-21 |
-21 |
-5 |
-2 |
5 |
6 |
5 |
-22 |
| Fog, days |
12 |
16 |
18 |
18 |
19 |
16 |
12 |
5 |
4 |
3 |
4 |
7 |
134 |
| Thunderstorms, days |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
6 |
6 |
6 |
5 |
27 |
| Snowfall, cm. |
0 |
0 |
9 |
19 |
17 |
14 |
9 |
1 |
0 |
0 |
0 |
0 |
69 |
| Average precipitation, mm. |
61 |
45 |
53 |
36 |
30 |
28 |
36 |
44 |
72 |
86 |
61 |
65 |
617 |
| Relative humidity morning, % |
87 |
87 |
87 |
84 |
83 |
83 |
82 |
77 |
76 |
75 |
75 |
81 |
81 |
| Relative humidity evening, % |
52 |
59 |
70 |
72 |
68 |
62 |
55 |
48 |
49 |
51 |
47 |
48 |
57 |
| Wind speed, km/h |
6 |
7 |
8 |
8 |
8 |
9 |
9 |
11 |
9 |
9 |
8 |
7 |
8 |
| Monthly sunshine, часов |
176 |
133 |
77 |
56 |
76 |
115 |
137 |
175 |
224 |
219 |
240 |
235 |
1861 |
| Day Length, часов |
13 |
11 |
10 |
9 |
10 |
11 |
13 |
14 |
16 |
17 |
16 |
15 |
13 |
| Dew point, °C |
11 |
6 |
1 |
-1 |
-3 |
-2 |
1 |
3 |
8 |
12 |
13 |
13 |
62 |
| Growing degree-day, °C |
173 |
6 |
0 |
0 |
0 |
0 |
0 |
0 |
154 |
237 |
317 |
312 |
1198 |
| Solar radiation, global, Mj/m2 |
12 |
7 |
4 |
3 |
4 |
7 |
11 |
15 |
19 |
19 |
19 |
17 |
12 |