Thermograph

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

Weather in St Helens in December

In an average December, St Helens sees a daily high around 8°C and a low around 3°C, based on 1980–2026 of local climate records.

Average high8°C
Typical high range3°C to 12°C
Average low3°C
Typical low range-2°C to 8°C
Average daily precipitation3 mm

December records

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

High

Highest 16°C 2015-12-19
Lowest -8°C 1981-12-12

Low

Highest 13°C 1994-12-11
Lowest -15°C 1981-12-13

Feels-like

Highest 13°C 1994-12-11
Lowest -28°C 1981-12-13

Humidity

Highest 10.7 g/m³ 2015-12-19
Lowest 1.9 g/m³ 1981-12-12

Wind

Highest 68 km/h 1997-12-24
Lowest 4 km/h 1987-12-10

Gust

Highest 126 km/h 1997-12-24
Lowest 9 km/h 1987-12-10

Precip

Wettest 203 mm 1993
Driest 29 mm 2010

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