South Dakota's average annual precipitation is 30.1 inches (511 millimeters). This includes rain fall and snow fall. Northwestern SD averages about 15 inches precipitation per year while southeastern SD averages about 25 inches of precipitation per year.
there is on average 750mm of rain fall in Aberdeen, Scotland per year
On average between 100mm (in the north) and 150mm in the South of rain per year.
Average rain fall in the Black Hills of South Dakota is usually over 20 inches. This is because as the clouds pass over the cooler climate of the high hills, they lose their moisture. The prairie near the hills is much drier.
7
The average of rain fall in St Louis in rain is between 35 - 40 incs. And the normal precipitation is 38.84 incs.
The average rain fall in the Amazonian rain forest is about 9 feet per year, but global warming is definitely affecting the average year by year.
14ph
The season of rain is between December until March
40 100
11110 ionches
2 feeet
it is about 400mm a year