When is it okay to wear a windbreaker in mid-October in Anhui?

Taking Hefei on October 12, 2014 as the date, the weather in the last 10 days.

Today’s weather in Hefei: Sunny to cloudy at night, with a temperature of 12℃, and a north wind of level 3?

Hefei’s weather tomorrow: Sunny during the day, sunny at night, with a temperature of 9℃ ~20℃, ?north to west wind level 4?

The weather in Hefei the day after tomorrow: ?sunny during the day and clear at night, ?temperature 10℃~21℃, ?north to west wind level 2?

The weather in Hefei 3 days later: ?Mostly sunny during the day, mostly cloudy at night,?The temperature is 15℃~23℃,?South easterly wind level 2?

The weather in Hefei 4 days later: ?Sunny and cloudy during the day, Mostly cloudy at night, with a temperature of 14°C to 26°C, and a northerly easterly wind of level 2.

Hefei weather 5 days later: Mostly clear during the day, mostly clear at night, with a temperature of 14°C to 25°C , ?Easterly southerly wind level 3?

The weather in Hefei 6 days later: ?Sunny during the day, partly cloudy at night, ?temperature 15℃~26℃, ?east wind level 2?

Hefei weather 7 days later: Mostly cloudy during the day, showers at night, temperature 16℃～25℃, east wind level 3

Hefei weather 8 days later: rain during the day, rain at night, temperature 16℃～23℃, ?northeast wind level 2?

Hefei weather 9 days later: ?showers during the day, sunny to cloudy at night, ?temperature 15℃～22℃, ?northeast wind level 2

Based on the above weather conditions in Hefei, it can be concluded that there is no need to wear windbreakers in Hefei for the time being. You can wear it if you feel cold.