United Kingdom
Weather in St Helens through the year
The average of the weather stations Valley (122 km), Oxford (212 km) and Dublin Phoenix Park (238 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 8.3 °C | 8.1 °C – 8.5 °C |
| February | 8.7 °C | 8.3 °C – 9.0 °C |
| March | 10.5 °C | 9.0 °C – 11.6 °C |
| April | 12.9 °C | 11.7 °C – 14.1 °C |
| May | 15.9 °C | 14.2 °C – 17.4 °C |
| June | 18.5 °C | 17.4 °C – 19.4 °C |
| July | 20.0 °C | 19.4 °C – 20.3 °C |
| August | 19.8 °C | 19.1 °C – 20.2 °C |
| September | 17.7 °C | 16.2 °C – 19.1 °C |
| October | 14.5 °C | 12.8 °C – 16.1 °C |
| November | 11.1 °C | 9.6 °C – 12.7 °C |
| December | 9.1 °C | 8.5 °C – 9.6 °C |