[M T]

I looked at the CDC map for COVID rates per 100K in the last 7 days for the US
  https://covid.cdc.gov/covid-data-tracker...klast7days
and the October mean temperatures for the US
  https://www.ncdc.noaa.gov/monitoring-con...202010.png
(derived from https://www.ncdc.noaa.gov/temp-and-preci...aps-select )

There is very clear correlation between the maps (but, this is one point in time -- not enough to be conclusive!).
You can view MayoClinic's map of new cases per 100K by states for the last 2 months as an animation.
The NYT per-capita map shows localities rather than states.

If I look at the Mayo Clinic's animation of COVID per 100K California, I don't see the correlation to what I expect the temperatures to have been.

Do recognize that the difference between a temperature of 10F, 0F, -10F might not impact how much time people spend indoors, nor the difference between 60, 70, and 80F, nor between 110F and 120F.

[M T]

I looked at the CDC map for COVID rates per 100K in the last 7 days for the US
  https://covid.cdc.gov/covid-data-tracker...klast7days
and the October mean temperatures for the US
  https://www.ncdc.noaa.gov/monitoring-con...202010.png
(derived from https://www.ncdc.noaa.gov/temp-and-preci...aps-select )

There is very clear correlation between the maps (but, this is one point in time -- not enough to be conclusive!).
You can view MayoClinic's map of new cases per 100K by states for the last 2 months as an animation.
The NYT per-capita map shows localities rather than states.

If I look at the Mayo Clinic's animation of COVID per 100K California, I don't see the correlation to what I expect the temperatures to have been.

Do recognize that the difference between a temperature of 10F, 0F, -10F might not impact how much time people spend indoors, nor the difference between 60, 70, and 80F, nor between 110F and 120F.