Direct sunlight increases in temperature and or uneven storage pressure are the principal components that can lead to warping vinyl records.
Temperature vinyl records.
But 20 30 may be excessive.
The old record for the highest september temperature in van nuys was 111 degrees in 2017 according to nws.
From good old wikipedia store in use lps at a temperature of 65 to 70 f 18 to 21 c.
Vinyl lps should be kept clean and stored vertically using light even pressure against the record and at room temperature below 75 degrees f.
Los angeles county recorded its highest ever temperature sunday as the weekend heat fanned wildfires across california and put additional strain on the state s power network.
121 was the highest ever recorded at an official site in l a.
Other factors such as humidity sunlight exposure and improper storage can drastically impact the resilience of a record.
Los angeles county records its highest temperature on record the mercury reached 121 degrees as a heat wave hit the west coast.
A typical vinyl record can start warping due to heat at a temperature of 140 f 60 c and can melt at temperatures exceeding 212 f 100 c.
Here are the two sites that broke their all time high temperature records today.
September 7 2020 3 31 am.
Room temperature and humidity should be at 70 degrees fahrenheit and 50 percent respectively.
However being below 0 indoor i think its difficult unless you have cardboard walls watch out for humidity and mould instead.
Though relative humidity rh is considered less an issue for vinyl than other recorded media it is recommended that lps be stored at 45 to 50 rh.
Heat of course make them sloppy and tend to warp plastic material can react to temperature change i d say cold temperature are good for vinyl.
Choose a storage medium that will best maintain the condition of your vinyl records.
And temperature records for select los angeles county locations although the highest average mean monthly temperature for downtown los angeles is in august 73 1 f september is most likely to record record breaking temperatures for the month including the all time heat record of 113 f in 2010.
Those in long term storage should be kept at 45 to 50 f 7 to 10 c.