Trends are based on data recorded at Sunbury on Thames since 2007.

Annual Temperature Trend
Month	Average since 2007	Current Month	Difference
January	4.4°C	2.4°C (2010)	-2.00°C
February	4.7°C	4.2°C (2010)	-0.50°C
March	7.1°C	7.1°C (2010)	0.00°C
April	10.3°C	10.6°C (2010)	0.30°C
May	13.8°C	12.5°C (2010)	-1.30°C
June	17.2°C	17.8°C (2010)	0.60°C
July	18.4°C	19.7°C (2010)	1.30°C
August	17.7°C	17.1°C (2010)	-0.60°C
September	15.3°C	16.2°C (2010)	0.90°C
October	11.3°C	13.2°C (2009)	1.90°C
November	8.4°C	9.9°C (2009)	1.50°C
December	4.6°C	4.4°C (2009)	-0.20°C
Average 12 Month Temperature since 2007: 11.1°C
Current 12 Month Temperature: 11.3°C
Current 12 Month Temperature Trend: 0.20°C

Annual Rainfall Trend
Month	Average since 2007	Current Month	Difference
January	68.2 mm	57.60 mm (2010)	-10.60 mm
February	58.2 mm	103.80 mm (2010)	45.60 mm
March	48.3 mm	41.00 mm (2010)	-7.30 mm
April	40.6 mm	24.40 mm (2010)	-16.20 mm
May	38.0 mm	23.00 mm (2010)	-15.00 mm
June	38.7 mm	22.60 mm (2010)	-16.10 mm
July	61.1 mm	11.40 mm (2010)	-49.70 mm
August	59.4 mm	10.2 mm (2010)	-49.20 mm
September	43.9 mm	72.20 mm (2010)	28.30 mm
October	38.3 mm	34.60 mm (2009)	-3.70 mm
November	66.2 mm	138.60 mm (2009)	72.40 mm
December	65.5 mm	84.20 mm (2009)	18.70 mm
Average 12 Month Rainfall since 2007: 626.40 mm
Rainfall for last 12 months: 623.60 mm
Current 12 Month Rainfall difference: -2.80 mm

Sunburyweather also participates in the iICCP project. Here you can find a wide range of data, both in tabular and graphic form, collected from a network of automatic weather stations (AWS) located around the country. The stations provide monthly data to this project, including temperature, rainfall and pressure, to allow us to analyse how the country's climate is changing.