**5. Conclusions**

In this work, a GTWRK model combined with the GTWR and kriging model was introduced to interpolate the spatial distribution of monthly and annual precipitation from 2006 through 2014 in Hubei Province. The main conclusions are as follows:


by 36%, 56%, and 35%, respectively, when using daily data. The same indices for the annual data reduced by 13%, 15%, and 14% when using daily data, respectively.


**Author Contributions:** W.Z. proposed the theme and method of the article, conducted the initial analysis, provided the financial support for the project leading to this publication and provided the creation of the revision and published work; D.L. conducted the research and investigation process, performed the experiment of the thesis, and write the original draft; S.Z. provided and processed the source of the data, and participated the investigation process; S.L. provided the presentation of the revision and published work; H.A.L. provided critical review, data interpretation and presentation of results, and English editing in the revision and publication stages; W.L. took part in the presentation of the published work on revision and publication stages. All authors have read and agreed to the published version of the manuscript.

**Funding:** This study was partially supported by the National Natural Science Foundation of China under Grant No. 41501584, and Grant No. 41871304.

**Conflicts of Interest:** The authors declare no conflict of interest.
