Winter in Dushanbe begins on 7 December and ends on 22 February; spring starts on 22 February and ends on 17 May. During springtime, cyclones and rain are at their highest along with thunderstorms and hail, which causes significant damage and occurs for around 3 days per year. Summer starts on 17 May and ends on 14 August, the best period for agriculture. Dry weather sets in during this, as evidenced by a sharp drop in precipitation during the summer. A warm and dry autumn begins on 14 August and ends on 7 December.