The monthly outlook is based on output from various global forecasting models combined with our own analysis.
Temperature Slightly above average in the south, close to average in the north.
PrecipitationClose to average.
1/12 to 7/12
Quiet and chilly weather is expected for the first half of the week with overnight frost and fog in places.
At times during the second half of the week bands of cloud and rain will push south eastwards, and over the Scottish mountains these bring a risk of snow. The rain is expected to be followed by clearer conditions, but there will be showers and these are likely to turn wintry in the north. Over high ground in Scotland significant snowfall is possible.
8/12 to 14/12
Unsettled and at times very windy, especially in northern regions.
During the early part of the week a spell of very wet and windy weather is expected to push eastwards over all regions. This will be followed by colder showery conditions. In the north the showers are likely to be wintry and over higher ground significant snowfall is possible.
Later it should turn drier in southern and central regions, but in the north further spells of rain are probable at times.
Temperatures on the low side for much of the week in the north. Chilly at times in the south too, but over the week probably not far off the mid-December average.
15/12 to 31/12
Forecast confidence for this period is low.
Unsettled conditions are forecast to continue during the second half of the month. The wettest weather is likely to be in the north and west with more frequent drier interludes in the south.
Temperatures are likely to be above average in the south but close to average further north with colder incursions at times. Over the Scottish mountains significant snowfall is expected and there could be temporary snowfalls down to lower levels at times.
Across the rest of the UK the risk of snow is considered low although obviously greater over high ground in Wales and northern England.
Important note about long range weather forecasts: It is considered impossible to say with certainty what the weather will be like more than a few days ahead in the UK. Long range forecasts on TheWeatherOutlook have not been independently verified, and we make no claims for their accuracy. A range of factors including seasonal computer models, recent weather patterns, sea surface temperatures and teleconnections are considered when making the forecasts.
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