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It is considered as the main objective for this work the assembly and calibration of an Experimental Weather Station from the use of low material. The development of this work was acted upon principles in the following steps: Step 1 - acquisition of low cost materials; 2nd achievement of sensors to measure temperature, air relative humidity and atmospheric pressure; Step 3 - download a free software; Step 4 - assembly of equipment; Step 5 - collection of the Experimental weather station data, into the environment of a weather shelter owned by INFRAERO / GNA - based in the airport of Barra do Garças; Step 6 - correlation, analysis and discussion of the gauged data. The diary the data of the Experimental Didactics Weather Station were collected each fifty (50) minutes from 09: 00h to 19: 00hon the day 10.09.2013, along with data INFRAERO / GNA. Thus it was verified that exactly 12: 00, the temperature data recorded by the Meteorological Station the Experimental sensor and sensor INFRAERO Weather Station / GNA, registered 30,2°C. Meanwhile at 18: 00h, it was noted 43.6% relative humidity, the Experimental Weather Station, and Weather Station INFRAERO / GNA has quantified the sensor up 44%, showing a difference of only 0.4%, between stations. Given the measurement and calibration performed diagnosed that the the Experimental Weather Station and of good reliability and of excellent acceptance because its value is low cost. [ABSTRACT FROM AUTHOR]