SD card longevity test

Current Weather Conditions

04/15/24 21:35:00

Current Conditions
Outside Temperature 11.7°C (53.1°F)
Dewpoint 0.5°C (32.9°F)
Humidity 46%
Barometer 1024.9 mbar
Barometer Trend (3 hours) 2.3 mbar
Inside Temperature 19.2°C (66.6°F)
Longevity experiment

This is a test to see how long an SD card can survive while running a standard weewx installation. The test uses an unmodified version of the "Standard" weewx skin. While all pages are generated, only this page is uploaded to my webserver so as to minimize the hit on my limited upload bandwidth.

Otherwise, the installation is no different than any other weewx installation.

The card was first put into service on 7 December 2014, so the total runtime so far is approximately 9 years and 132.1 days.


  • Raspberry Pi B+
  • Sandisk Extreme Plus 16GB SD card
  • Raspbian Wheezy, kernel 3.12.28+
  • Sqlite database
  • Five minute archive interval
  • Normal logging, done to the SD card
  • No debugging
  • Uninterruptible power supply
About this weather station:
Latitude: 45° 41.16' N
Longitude: 121° 33.96' W
Altitude: 213 meters

This station uses a WMR100, controlled by 'weewx', an experimental weather software system written in Python. Weewx was designed to be simple, fast, and easy to understand by leveraging modern software concepts.

Weewx uptime: 346 days, 11 hours, 13 minutes
Server uptime: 346 days, 11 hours, 13 minutes
weewx v3.0.0

Today's Almanac
Start civil twilight: 05:45:53
Sunrise: 06:18:56
Transit: 13:06:05
Sunset: 19:54:07
End civil twilight: 20:27:18
Azimuth: 305.1°
Altitude: -16.8°
Right ascension: 24.8°
Declination: 10.3°
Solstice: 06/20/24 13:51:01
Equinox: 09/22/24 05:43:29
Rise: 11:24:23
Transit: 19:41:27
Set: 03:12:03
Azimuth: 236.0°
Altitude: 59.3°
Right ascension: 124.2°
Declination: 24.5°
Full moon: 04/23/24 16:48:53
New moon: 05/07/24 20:21:50
Phase: First quarter
(54% full)