Last night it got down to "0" (zero) deg. F., at least according to one thermometer. I have two thermometers sitting outside the window, one is digital, the is analog like above, but they both show different temps by about 10 deg., or more.
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Not knowing which one was right, I put yet another thermometer beside the other two, another analog thermometer. It read the same as the other analog thermometer, yet if I check on the web, it shows the same temp as the digital thermometer.
As of right now, the digital thermometer is showing 10 deg. F., yet the two analog thermometers are both showing 21 deg. F. So, what is the correct temperature, 10 or 21 deg. F? Is it the two analog thermometers or the digital one that agrees with the temp on the web?
I could see a big difference if they were far apart from each other (maybe), but all there are only inches apart from each other.
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