Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Onon, Mongolia

September, the first month of the autumn, in Onon, is still a comfortable month, with average temperature ranging between min 2°C (35.6°F) and max 16°C (60.8°F).


In Onon, the average high-temperature drops, from an agreeable 22°C (71.6°F) in August, to an enjoyable 16°C (60.8°F). The average low-temperature, in Onon, is 2°C (35.6°F).


In Onon, in September, 38mm (1.5") of precipitation is typically accumulated. During the entire year, Onon aggregates up to 377mm (14.8") of precipitation.


The average length of the day in September in Onon is 12.6h.

What is the temperature in September in Onon?

The average high-temperature, in September, in Onon, is 16°C (60.8°F), while the average low-temperature is 2°C (35.6°F).

How much does it rain in Onon in September?

Throughout September, in Onon, Mongolia, 38mm (1.5") of precipitation is accumulated.

What is the average length of the day in September in Onon?

In September, the average length of the day in Onon, Mongolia, is 12.6h.
Average temperature in September - Onon, Mongolia
  • Average high temperature in September: 16°C

Warmest months (with the highest average high temperature) are June, July and August (22°C).
The month with the lowest average high temperature is January (-14°C).

  • Average low temperature in September: 2°C

The month with the highest average low temperature is July (11°C).
Coldest months (with the lowest average low temperature) are January and December (-26°C).

Average rainfall in September - Onon, Mongolia
  • Average rainfall in September: 38mm

Wettest months (with the highest rainfall) are July and August (99mm).
The driest month (with the lowest rainfall) is February (0mm).

Average daylight in September - Onon, Mongolia
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.1h).
The month with shortest days is December (Average daylight: 8.4h).