Thank you so much 

Dear Amobichukwu;

I am agree with Dr. Towe, but be care that you could fill missing data by some common methods. I suggest you to read attached files or see the links: 

https://www.researchgate.net/post/monthly_rainfall_data_missing

https://www.researchgate.net/post/What_is_the_recommended_method_to_fill_gaps_of_precipitation_data_set

https://www.researchgate.net/post/which_methods_are_used_to_fill_in_the_missing_precipitation_data_with_high_resolution_ie_5_minutes

Hope it helps.

thanks for this great materials @muhammedReza