The Kriging algorithm was used to realize spatial interpolation of weather data. Comparisons were done for the results of the Kriging algorithm,the Surfer software,and the manually analyzed,as well as for the analysis results of several statistics. The comparisons show that the spherical mode should be used in the variation function for weather data. The values of sea-level air pressure should be compressed to reduce errors in the Kriging algorithm. The radius of the spherical model should be ten longitudes/latitudes or more for the conventional data.