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Data source: NOAA National Climate Data Center
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Hot days in San Diego correlates with...

VariableCorrelationYearsHas img?
Google searches for 'where do birds go when it rains'r=0.7717yrsNo
Average views of SmarterEveryDay YouTube videosr=0.7716yrsYes!
Gasoline pumped in Congo-Kinshasar=0.6235yrsNo
Shark attacks in the United Statesr=0.5510yrsNo


Hot days in San Diego also correlates with...

VariableCorrelationYearsSys. Score
Total views on SmarterEveryDay YouTube videosr=0.7715yrs168
Popularity of the 'cicada 3301' memer=0.7516yrs167
Google searches for 'numberphile'r=0.7717yrs165
The number of cartographers in Californiar=0.7717yrs165
Warner Bros. Discovery's stock price (WBD)r=0.7816yrs164
Number of times 3 was a winning Mega Millions numberr=0.7416yrs161
Google searches for 'sleepwalking'r=0.7417yrs160
The number of anthropologists and archeologists in Californiar=0.7517yrs160
Coterra Energy's stock price (CTRA)r=0.7318yrs158
Popularity of the 'dumb ways to die' memer=0.8112yrs157
Air pollution in Santa Cruz, Californiar=0.5736yrs156
Air pollution in Santa Cruz, Californiar=0.6524yrs156
The number of movies Sean Astin appeared inr=0.5831yrs156
Popularity of the 'doge' memer=0.7913yrs155
Popularity of the first name Marjorier=0.5540yrs152
Hydopower energy generated in Sloveniar=0.6423yrs152
Jet fuel used in Maldivesr=0.5835yrs152
How insightful Deep Look YouTube video titles arer=0.799yrs150
Automotive recalls for issues with the Tiresr=0.5240yrs149
Popularity of the first name Rolandr=0.5340yrs149
Popularity of the first name Thaddeusr=0.540yrs144
The number of movies Chadwick Boseman appeared inr=0.713yrs142
The number of movies Kit Harington appeared inr=0.748yrs142
Highest sale price for a single-family home in Connecticutr=0.715yrs140
Sewage sludge used for fertilizer in the USr=0.6123yrs140
Master's degrees awarded in Communications technologiesr=0.749yrs139
Number of times 7 was a winning Mega Millions numberr=0.6816yrs137
Number of times 15 was a winning Mega Millions numberr=0.6618yrs136
Number of times 1 was a winning Mega Millions numberr=0.6814yrs135
Number of times 12 was a winning Mega Millions numberr=0.6616yrs134
RTX Corp's stock price (RTX)r=0.6718yrs134
Air pollution in Napa, Californiar=0.710yrs134
US average dairy skim-solid content of canned milk evaporated and condensed milkr=0.6717yrs130
The number of microbiologists in Californiar=0.6417yrs130
Patents granted to Kiar=0.6910yrs130
Super Bowl TV viewershipr=0.5526yrs129
Number of passing touchdowns by Peyton Manningr=0.710yrs128
Sales of Top-Selling Comic Book to North American Comics Shopsr=0.618yrs128
Patents granted to Canonr=0.6711yrs128
US household spending on health insurancer=0.6218yrs127
UK Service Retail Price Indexr=0.6514yrs126
Portion of all US dairy skim-solids allocated to the production of whey products (net)r=0.6417yrs126
US household spending on healthcarer=0.6118yrs126
Liquefied petroleum gas used in Latviar=0.6524yrs121
Popularity of the 'what does the fox say' memer=0.789yrs120
How geeky Steve Mould's YouTube video titles arer=0.7612yrs118
Google searches for 'Numberphile'r=0.7614yrs116
Average viewer count per season of "How I Met Your Mother"r=0.748yrs108
How geeky Mark Rober YouTube video titles arer=0.7711yrs108
Gilead Sciences' stock price (GILD)r=0.6718yrs104
Popularity of the 'thanks obama' memer=0.6915yrs102
Google searches for 'teenage mutant ninja turtles'r=0.7117yrs101
Popularity of the first name Clyder=0.540yrs100
The number of movies Eva Green appeared inr=0.6616yrs98
Biomass power generated in Sierra Leoner=0.748yrs96
The number of bakers in Californiar=0.6217yrs96
How good Matt Parker's YouTube video titles arer=0.7511yrs96
Enbridge's stock price (ENB)r=0.6618yrs93
Popularity of the 'i dont always' memer=0.6716yrs90
Google searches for 'google'r=0.6817yrs86
Petroluem consumption in Hawaiian Trade Zoner=0.767yrs86
Popularity of the first name Adilener=0.5529yrs86
The number of gas plant operators in Californiar=0.6217yrs86
How insightful Steve Mould's YouTube video titles arer=0.7312yrs84
Pioneer Natural Resources Company's stock price (PXD)r=0.6618yrs83
The number of movies Emma Thompson appeared inr=0.5128yrs78
Gasoline pumped in Hawaiian Trade Zoner=0.767yrs76
Google searches for 'cute cats'r=0.6717yrs75
Total views on LEMMiNO YouTube videosr=0.7410yrs73
ONEOK's stock price (OKE)r=0.6518yrs72
Jet fuel used in Hawaiian Trade Zoner=0.767yrs66
Google searches for 'scooby doo where are you'r=0.6617yrs64
How nerdy Steve Mould's YouTube video titles arer=0.7212yrs62
CVS stock price (CVS)r=0.6118yrs58
Google searches for 'Malaysia Airlines'r=0.6814yrs54
Hydopower energy generated in Equatorial Guinear=0.5335yrs52
Fomento Econ's stock price (FMX)r=0.6118yrs46
Google searches for 'matt levine'r=0.6617yrs44
Average number of comments on MinuteEarth YouTube videosr=0.699yrs44
Wind power generated in Vanuatur=0.6911yrs42
Biogen's stock price (BIIB)r=0.6118yrs36
Google searches for 'how to hide a body'r=0.6417yrs34
Average views of MinuteEarth YouTube videosr=0.679yrs32
Renewable energy production in Cabo Verder=0.622yrs30
How cool Matt Parker's YouTube video titles arer=0.6611yrs22
Google searches for 'im not even mad'r=0.6417yrs20
Wind power generated in Puerto Ricor=0.6811yrs20
Total comments on LEMMiNO YouTube videosr=0.6610yrs11
Google searches for 'best breed of dog'r=0.6317yrs9
Wind power generated in Latviar=0.6120yrs9
Biomass power generated in Nigeriar=0.6317yrs-1
Google searches for 'spurious correlations'r=0.6217yrs-2
How fun Numberphile YouTube video titles arer=0.6311yrs-2
Wind power generated in Tunisiar=0.6217yrs-12
Google searches for 'how to make baby'r=0.6117yrs-14
Gasoline pumped in Gabonr=0.5235yrs-22
Gasoline pumped in Liberiar=0.5235yrs-32
Gasoline pumped in Chadr=0.5333yrs-43


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You caught me! While it would be intuitive to sort only by "correlation," I have a big, weird database. If I sort only by correlation, often all the top results are from some one or two very large datasets (like the weather or labor statistics), and it overwhelms the page.

I can't show you *all* the correlations, because my database would get too large and this page would take a very long time to load. Instead I opt to show you a subset, and I sort them by a magic system score. It starts with the correlation, but penalizes variables that repeat from the same dataset. (It also gives a bonus to variables I happen to find interesting.)
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