Cheonan weather records
Record high and low temperatures for Cheonan, by month, by season, and all-time, with the dates they occurred, across 1980–2026 of daily climate history. Its hottest day on record reached 40°C on 2018-08-15; its coldest fell to -23°C on 2000-12-28.
Records by month
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have ever been in each calendar month, so each column shows its record high and its record low. Tap a month for its full averages and typical range.
| Month | Daytime high | Overnight low |
|---|---|---|
| January | 16°C2002-01-14
-12°C1986-01-05
|
10°C2002-01-15
-19°C2021-01-07
|
| February | 20°C2021-02-21
-9°C2012-02-02
|
11°C1992-02-28
-17°C1980-02-06
|
| March | 28°C2025-03-26
-2°C2004-03-06
|
15°C2009-03-18
-12°C2010-03-18
|
| April | 33°C2005-04-30
5°C1993-04-08
|
20°C2005-04-30
-3°C2019-04-01
|
| May | 34°C2014-05-31
12°C1986-05-01
|
23°C2018-05-16
4°C1991-05-03
|
| June | 36°C2024-06-19
17°C1998-06-05
|
27°C2022-06-27
10°C1981-06-01
|
| July | 37°C2018-07-22
20°C1997-07-06
|
27°C2019-07-30
15°C1993-07-20
|
| August | 40°C2018-08-15
20°C2022-08-30
|
28°C2018-08-22
14°C1991-08-26
|
| September | 34°C2024-09-10
15°C1987-09-26
|
26°C2024-09-19
5°C1987-09-26
|
| October | 30°C2021-10-03
8°C1980-10-26
|
21°C2019-10-01
-2°C1982-10-24
|
| November | 26°C2023-11-02
-2°C1992-11-26
|
18°C2023-11-05
-10°C1996-11-30
|
| December | 19°C2023-12-09
-7°C1980-12-29
|
10°C2018-12-03
-23°C2000-12-28
|
Records by season
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have reached in each meteorological season (Northern Hemisphere, each a three-month span).
| Season | Daytime high | Overnight low |
|---|---|---|
| Winter (Dec–Feb) | 20°C2021-02-21
-12°C1986-01-05
|
11°C1992-02-28
-23°C2000-12-28
|
| Spring (Mar–May) | 34°C2014-05-31
-2°C2004-03-06
|
23°C2018-05-16
-12°C2010-03-18
|
| Summer (Jun–Aug) | 40°C2018-08-15
17°C1998-06-05
|
28°C2018-08-22
10°C1981-06-01
|
| Autumn (Sep–Nov) | 34°C2024-09-10
-2°C1992-11-26
|
26°C2024-09-19
-10°C1996-11-30
|
All-time records
The most extreme value Cheonan has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Gust
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.