Thermograph

How unusual is the weather? Graded against ~45 years of local climate history.

Weather in Cheonan in September

In an average September, Cheonan sees a daily high around 26°C and a low around 17°C, based on 1980–2026 of local climate records.

Average high26°C
Typical high range22°C to 30°C
Average low17°C
Typical low range13°C to 21°C
Average daily precipitation5 mm

September records

The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.

High

Highest 34°C 2024-09-10
Lowest 15°C 1987-09-26

Low

Highest 26°C 2024-09-19
Lowest 5°C 1987-09-26

Feels-like

Highest 52°C 2024-09-17
Lowest 1°C 1987-09-26

Humidity

Highest 24.0 g/m³ 2024-09-17
Lowest 5.4 g/m³ 1987-09-26

Wind

Highest 49 km/h 2019-09-07
Lowest 5 km/h 2002-09-18

Gust

Highest 112 km/h 2019-09-07
Lowest 11 km/h 1996-09-05

Precip

Wettest 408 mm 1999
Driest 6 mm 1982

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