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Shannan climate is characterized by cold and rainy spring, and it is often windy and heavy snow in southern Shannan. Shannan spring's average temperature is 7 ~ 15 ℃. In summer, with the forming of summer monsoon circulation system, Shannan prevail southeast wind, and also the Northwest Pacific subtropical high activities has great influence to Shannan's weather, while the northern cold air still has some impact. In Fall, summer wind gradually weakened, and it transits to winter monsoon, cyclones are frequent frontal precipitation are more cold and warm temperatures changed greatly. In winter, the East Asian winter monsoon strength depends primarily on the activities of the Mongolian cold high pressure , air mass north Shannan weather constrained ( ie winter winds ) the impact of weather processes species is relatively small.
|
Month
Item
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
|
Average Temperature (℃)
|
-0.4
|
2.4
|
5.9
|
8.9
|
12.6
|
16.0
|
15.9
|
15.1
|
13.5
|
9.7
|
4.0
|
0.0
|
|
maximum
temperature (℃) |
8.0
|
10.0
|
13.5
|
16.6
|
20.3
|
23.4
|
22.9
|
21.9
|
20.6
|
17.8
|
12.8
|
8.9
|
|
minimum
temperature (℃) |
-8.3
|
-5.3
|
-1.6
|
1.7
|
5.6
|
9.5
|
10.5
|
10.0
|
8.2
|
2.8
|
-3.3
|
-7.4
|
|
Rainfall (mm)
|
0.3
|
0.6
|
4.4
|
10.6
|
25.8
|
58.1
|
103.8
|
109.8
|
61.5
|
6.8
|
1.2
|
0.3
|
|
Days of rainfall
|
2.6
|
3.5
|
3.8
|
3.5
|
3.1
|
2.8
|
2.5
|
2.6
|
2.4
|
2.5
|
2.4
|
2.0
|
