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London Average Temperature vs US Electricity Generation

London Average Temperature and US Electricity Generation correlate at r = +0.64 over 41 years (1985–2025), p < 0.0001. With the time trend removed, r = +0.19. Interpret with caution.

Verdict: Interpret with caution. Much of the apparent link is driven by a shared time trend: r falls from 0.64 to 0.19 once the trend is removed.

Pearson r
+0.64
p-value
< 0.0001
Years compared (n)
41 (1985–2025)
95% confidence interval
0.41 to 0.79
Correlation with the time trend removed
+0.19

Sources

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Correlation does not imply causation. How the verdict is worked out.