| Month | Average (°C) | Record (°C) | Average (cm) | ||
|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | |
| January | 5.6 | 0.9 | 16.2 | -20.4 | 6.5 |
| February | 6.5 | 1.0 | 20.5 | -20.2 | 6.3 |
| March | 10.4 | 3.1 | 24.5 | -11.9 | 5.9 |
| April | 14.7 | 5.5 | 30.0 | -4.8 | 4.9 |
| May | 18.4 | 8.9 | 34.2 | -1.3 | 6.4 |
| June | 21.3 | 11.8 | 36.6 | 1.8 | 7.4 |
| July | 23.6 | 14.0 | 38.6 | 5.8 | 7.6 |
| August | 23.4 | 13.9 | 37.2 | 3.4 | 7.9 |
| September | 19.4 | 11.1 | 34.3 | 0.0 | 6.3 |
| October | 14.7 | 7.8 | 26.9 | -5.7 | 6.7 |
| November | 9.5 | 4.3 | 22.1 | -8.9 | 6.4 |
| December | 6.2 | 1.8 | 17.6 | -16.5 | 7.8 |
| Entire year | 14.5 | 7.0 | 38.6 | -20.4 | 80.1 |
|
More Aachen Weather Records
1891–2024
|
||
|---|---|---|
| Highest daily low | 24.5 °C | July 29, 1947 |
| Lowest daily high | -12.8 °C | January 22, 1940 |
| Greatest daily range (Difference of high and low) |
24.8 °C | July 28, 1911 |
| Greatest difference in daily high over two conscutive days |
14.8 °C | Jan 13–14, 1968 |
| Most daily precipitation | 9.9 cm | July 14, 2021 |
| Most monthly precipitation | 23.2 cm | July 2021 |
| Most yearly precipitation | 112.1 cm | 1966 |
| Most yearly days with precipitation | 242 | 1905 |
| Earliest freeze | October 3 | 1936 |
| Earliest day ≥ 20 °C | February 10 | 1899 |
| Earliest day ≥ 25 °C | April 3 | 1946 |
| Earliest day ≥ 30 °C | April 21 | 1968 |
| Latest freeze | May 24 | 1905 |
| Latest day ≥ 20 °C | November 8 | 1983 |
| Latest day ≥ 25 °C | October 17 | 1930 |
| Latest day ≥ 30 °C | September 20 | 2003 |
| Most days in a year < 0 °C | 93 | 1947 |
| Most days in a year ≥ 20 °C | 132 | 1947 |
| Most days in a year ≥ 25 °C | 75 | 1947 |
| Most days in a year ≥ 30 °C | 30 | 1947 |
| Most days in a year ≥ 35 °C | 4 | 1911 |
|
Aachen Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 35 days | Nov 15 – Dec 19, 1974 |
| Without precipitation | 34 days | Aug 12 – Sep 14, 1991 |
| Freezing temperatures High temperature ≤ 0 °C |
22 days | Jan 27 – Feb 17, 1895 |
| High temperature ≥ 20 °C | 63 days | Jun 25 – Aug 26, 1995 |
| High temperature ≥ 25 °C | 28 days | Jul 12 – Aug 8, 2018 |
| High temperature ≥ 30 °C | 15 days | Jun 24 – Jul 8, 1976 |