Average highs and lows in summer (January) in Montevideo are 28 and 17 °C (82.4 and 62.6 °F), respectively, with an absolute maximum of 43 °C (109.4 °F); comparable numbers for Artigas in the northwest are 33 and 18 °C (91.4 and 64.4 °F), with the highest temperature ever recorded (42 °C or 107.6 °F).
[citation needed] As in most temperate climates, rainfall results from the passage of cold fronts in winter, falling in overcast drizzly spells, and summer thunderstorms are frequent.
A winter warm spell can be abruptly broken by a strong pampero, a chilly and occasionally violent wind blowing north from the Argentine pampas.
[29][30] Activities include reductions of emissions across food and grain production, increases of native and reforested land, restoration of bogland and grasslands as carbon sinks.
[29] To pursue climate policy, the country created on the 20th of May 2009, the Sistema Nacional de Respuesta al Cambio Climático y variabilidad (SNRCC) through directive 238/09.
[35] As a consequence of the 4th General Meeting of Global Environment Facility in 2010, there will be an observatory specialized in climate change in Uruguay - a new experience on a world scale.