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Welcome to the Cumulus Wiki.

This copy of the original Cumulus Wiki was cloned on 26-Oct-2018 (see about the Cumulus Wiki) and all user credentials from the deleted original Wiki hosted by should be valid here.

You do not need a userid to READ any of the content on this Wiki. If you plan on CONTRIBUTING to the Wiki, then you will need a userid.

  • Please use the Request Account form to apply for a userid,
  • or if you have a userid, then just Login.

When requesting a Wiki account, it would be helpful if you can use the same user name as on the Cumulus forum (but use a different password!), it makes it easier for the admins to identify genuine account requests from spammers.

Brian Underdown (weather34) has allowed us to host his Home Weather Station template for Cumulus on the Wiki.

Through this community Wiki we aim to share our knowledge of the Cumulus Weather Station software. The Cumulus Wiki contains documentation to help you whichever build of Cumulus Software you are using. It was created when only the Original Cumulus (1) was available. Cumulus 2 is mentioned only in passing. Mark Crossley is continuing development of Cumulus MX (3) and this Wiki is trying to keep up.

If you are new to Wiki's we suggest you spend a few minutes reading a brief introduction on how to use the Wiki. Firstly familiarise yourself with the layout and then how to read and search the Wiki.

If you have any questions please raise them on either the Cumulus forum or Cumulus board at

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CumulusMX (V3)
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Legacy Cumulus (V1)
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It's your Wiki......

We always welcome contributions from the Cumulus Community and if you feel you can contribute, please do. Some pages like Cumulus.ini and Webtags often need to be updated for new releases. As a starting point, we suggest you read How_you_can_contribute which is used to track what others feel needs doing.