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Lorestan has a diverse climate. In winters, while the northern
parts are covered with snow, the southern regions have a temperate
rainy weather. The western parts of the province such as Sefid Kuh
have more precipitation than the eastern parts, ie. Dorud and
Aligudarz. Likewise, the provincial towns have varying climates:
Khoram Abad has moderate winters and warm summers, while Borujerd
has cold winters and moderate summers. Aligudarz has icy winters
and moderate summers.
Based on climatic conditions, Lorestan can be divided into three
separate areas:
1. The cold mountainous area with heavy snow. The freezing period
of the region lasts for 70 days.
2. The central temperate area which is located in the central
parts of mountainous regions in the north and north-east and the
flat areas in the south. Precipitation in winter is often in the
form of rain.
3. The southern hot area which has the lowest height. As the area
is located in lower regions and is en route the southern warm
winds, it has hot summers.
The average annual rainfall is between 400 and 450 millimeters
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