20C on summers? You're kidding, right?
So how "warm" can I expect my Feb-May? 15C?
http://weather.uk.msn.com/monthly_averages.aspx?wealocations=wc:UKXX0141&q=Stockton-on-Tees%2c+England+forecast:averagesm
Monthly averages °F | °C
January Avg Low: 2° Avg High: 6° Avg precip: 3.76 cm
February Avg Low: 2° Avg High: 7° Avg precip: 3.34 cm
March Avg Low: 3° Avg High: 10° Avg precip: 2.95 cm
April Avg Low: 4° Avg High: 12° Avg precip: 4.57 cm
May Avg Low: 6° Avg High: 15° Avg precip: 2.9 cm
June Avg Low: 10° Avg High: 18° Avg precip: 4.46 cm
July Avg Low: 12° Avg High: 21° Avg precip: 3.72 cm
August Avg Low: 12° Avg High: 20° Avg precip: 4.54 cm
September Avg Low: 10° Avg High: 18° Avg precip: 3.93 cm
October Avg Low: 7° Avg High: 13° Avg precip: 4.95 cm
November Avg Low: 4° Avg High: 9° Avg precip: 4.33 cm
December Avg Low: 2° Avg High: 7° Avg precip: 4.15 cm