| Month | Average (°C) | Record (°C) | Average (cm) | ||
|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | |
| January | 7.6 | 2.6 | 14.4 | -12.2 | 14.5 |
| February | 7.6 | 2.4 | 13.9 | -11.1 | 11.3 |
| March | 8.6 | 3.1 | 20.0 | -10.6 | 10.5 |
| April | 10.5 | 4.6 | 20.8 | -8.9 | 7.4 |
| May | 12.7 | 6.3 | 23.9 | -4.4 | 6.9 |
| June | 14.5 | 9.0 | 25.6 | -0.6 | 6.5 |
| July | 16.3 | 10.8 | 26.2 | 0.0 | 7.5 |
| August | 16.3 | 10.9 | 26.3 | -3.9 | 8.8 |
| September | 14.7 | 9.4 | 25.0 | -0.4 | 10.4 |
| October | 12.0 | 6.9 | 21.1 | -4.4 | 13.3 |
| November | 9.5 | 4.4 | 16.3 | -14.4 | 12.8 |
| December | 7.8 | 2.6 | 14.4 | -16.7 | 13.9 |
| Entire year | 11.6 | 6.1 | 26.3 | -16.7 | 123.7 |
|
More Stornoway Weather Records
1873–2024
|
||
|---|---|---|
| Highest daily low | 18.3 °C | August 9, 1880 |
| Lowest daily high | -2.8 °C | January 13, 1918 |
| Greatest daily range (Difference of high and low) |
26.1 °C | December 19, 1953 |
| Greatest difference in daily high over two conscutive days |
15.0 °C | Mar 8–9, 1949 |
| Most daily precipitation | 7.0 cm | August 27, 1933 |
| Most monthly precipitation | 28.0 cm | February 1997 |
| Most yearly precipitation | 156.1 cm | 1990 |
| Most yearly days with precipitation | 301 | 2004 |
| Earliest freeze | August 30 | 1891 |
| Earliest day ≥ 20 °C | March 9 | 1949 |
| Latest freeze | June 2 | 1888 |
| Latest day ≥ 20 °C | October 6 | 1898 |
| Most days in a year < 0 °C | 76 | 1892 |
| Most days in a year ≥ 20 °C | 19 | 1955 |
| Most days in a year ≥ 25 °C | 1 | 2023 |
|
Stornoway Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 84 days | Jan 4 – Mar 28, 1990 |
| Without precipitation | 37 days | Mar 22 – Apr 27, 1974 |
| Freezing temperatures High temperature ≤ 0 °C |
5 days | Feb 1–5, 1912 |
| High temperature ≥ 20 °C | 9 days | Jun 25 – Jul 3, 2009 |
| Years | Station | Coordinates |
|---|---|---|
| 1873–2024 | Stornoway Airport | location |