5 Reasons Self-Hosted Weather Software Is a Pain

Self-hosted weather software like CumulusMX and WeeWX is powerful and free, and the hobbyist community has built impressive ecosystems around both. But if you are honest about the experience of running them day to day, there are real pain points that never quite go away.

This is not a critique of the software itself, which is excellent at what it does. It is a realistic look at the ongoing burden that comes with running it, and a suggestion for a path that avoids these problems entirely.

1. Your site dies when your Raspberry Pi goes offline

CumulusMX and WeeWX need a computer running 24/7, and for most owners that computer is a Raspberry Pi. If the Pi reboots for operating system updates, loses power during a storm, or its SD card corrupts — a notorious Raspberry Pi failure mode — your site stops updating. Nothing tells you, so you might not notice for hours or days.

The fix is manual: power-cycle the machine, check the logs, confirm the software restarted, and verify the upload is flowing again. If you are away from home when this happens, your site stays stale until you return. A watchdog script or a small UPS narrows the window, but the fundamental coupling remains: your public website is only as available as a small computer in your house.

2. FTP uploads fail silently and take your site down with them

Both programs upload generated web pages to your host over FTP. FTP is an old protocol and it fails in ways that are hard to debug: a password expires, the host changes the server address, a firewall update blocks the port, the disk on the host fills up, or a PHP version bump breaks your templates.

The worst part is the silence. There is no alert when the upload fails — CumulusMX or WeeWX keeps happily generating pages on the Pi, and from your end everything looks fine. Meanwhile your public site slowly becomes outdated, and the first person to notice is usually a visitor. Most owners discover a broken upload days later, then spend an evening working out which of five moving parts changed.

3. Your entire weather history lives on one SD card

Self-hosted software stores data on your machine. If that machine's storage fails and you do not have a backup, your weather history is gone. Years of observations, all-time records, and long-term trends can vanish in an instant.

This is a particularly painful failure mode because weather data is irreplaceable. You cannot re-measure last year's rainfall or that record gust. The only defense is a disciplined, automatic, off-site backup strategy — entirely achievable, but one more system to set up, test, and maintain. We wrote a separate guide on why weather stations need automatic data backup covering the common failure scenarios and what a proper strategy looks like.

4. You are the system administrator now

When you choose self-hosted software, you sign up for the software and for running a small server. That means:

• Applying operating system security updates
• Monitoring disk space and log files
• Managing SSL certificate renewals (if you use a custom domain)
• Debugging configuration issues when something changes
• Recovering from hardware failures

None of this is difficult individually, but it adds up to a constant low-level maintenance burden that never goes away. And it stacks on top of the physical care every station needs anyway — cleaning the rain gauge, checking the radiation shield — which we cover in the seasonal weather station maintenance checklist. The server does not reduce that work; it doubles the list.

5. Default templates look dated, especially on phones

The default output of CumulusMX and WeeWX looks dated. Community templates like Saratoga or Leuven improve the appearance but add another layer of things that can break — and many depend on specific PHP versions on your web host. Making the site look good on phones, which is how most visitors will see it, requires additional CSS work that most station owners do not have time for.

The result is a site that works but does not feel like a professional web presence for your station. Visitors in 2026 expect a responsive layout, dark mode, and fast loading as the baseline, and retrofitting those onto a template stack is a project of its own.

What does a hosted alternative look like?

A hosted weather site connects directly to your WeatherLink account in the cloud, so there is no computer at your house, no FTP upload, and no backups to manage. The service keeps the site online, stores your history off-site, and serves a modern, phone-friendly design automatically. You keep full ownership of your station and its data.

Here is how the five pain points map onto the two approaches:

Pro Weather builds a complete, modern website from your Davis WeatherLink account. Your site updates automatically every 10 minutes, your data is stored forever, and it looks great on any device out of the box. The only jobs left are the physical ones every station owner has regardless of hosting: mounting the sensors where they read true and keeping them clean.

For a detailed feature comparison, see Pro Weather vs CumulusMX and Pro Weather vs WeeWX. If you are ready to stop maintaining a server and start enjoying your weather data, start your Pro Weather site in about five minutes.

Common questions

Is a Raspberry Pi reliable enough to run a weather station?

The board itself is very reliable; the microSD card is the weak point. Continuous logging wears cards out, and corruption after a power cut is common. Owners who run a Pi for years usually boot from an SSD or a high-endurance card, add a UPS, and keep automated off-site backups. Reliable, yes — but only with that supporting discipline.

How do I keep CumulusMX running 24/7?

Run CumulusMX as a system service (systemd on Linux) so it restarts automatically after a crash or reboot, put the machine on a small UPS to ride out short power cuts, and add external uptime monitoring so you get an alert when the site stops updating. Even with all that in place, plan for someone to physically power-cycle the machine when you are away.

Can I try a hosted service without touching my current setup?

Yes. A hosted service like Pro Weather reads your data from the WeatherLink cloud API, so it runs alongside CumulusMX or WeeWX without interfering — your Pi keeps logging exactly as before. Many owners run both in parallel for a few weeks, then decide whether the server is still earning its keep.

Will I lose my existing history if I switch?

Your old data stays in your existing files — nothing deletes it — but hosted services generally cannot import CumulusMX or WeeWX databases, so a Pro Weather site builds its history forward from the day you connect. Keep a copy of your old database as an archive, and your record stays complete even if it lives in two places.