@Avijeet Dash
I'd suggest using NiFi for this.
You can read from the weather api using NiFi's GetHTTP processor, and use NiFi to process the data before loading it into another system (not sure what other components you're using but NiFi integrates with most systems, so you can use it to directly load the data into HDFS, HBase, Kafka, Cassandra, relational DBs etc..).
Check out the "Fun_with_Hbase" template on the NiFi website to help you get started, it gets random data from an API call before loading into HBase.
https://cwiki.apache.org/confluence/display/NIFI/Example+Dataflow+Templates
Also check out this article which uses NiFi to pull data from the Google Finance API:
https://community.hortonworks.com/content/kbentry/8422/visualize-near-real-time-stock-price-changes-...