Cooling degree days
A measure of how hot the year was, as a total over its days. A day whose average temperature is 80°F counts 15 cooling degree days, the degrees it rose above 65°F. A day at 65°F or cooler counts none. More cooling degree days mean more weather for air conditioning. NOAA estimates them from its monthly temperatures for each county. A state's figure is the average of its counties, each weighted by its land area. Alaska and Hawaii are not covered.
Reported for3,108areas, in 49 states — none in AK, HI, PR
Link to density0.06not mostly about how urban a place is
Nearby places alike0.97Moran’s I: strongly, neighbouring places tend to be similar
Typerate°F-days
How it has moved
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Every state, every year
One row per state and one column per year, sorted by the latest value. It shows states, not counties: nobody can scan 3,222 rows, and the pattern only shows when it all fits on one screen.
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Where it comes from
NOAA NCEI nClimDiv · NOAA NCEI nClimDiv climdiv-cddccy, sum of the 12 months; states, counties averaged by land area
Each day adds how many degrees its average temperature was above 65°F; the year's total. An average over area, so combined areas are weighted by their size.
Combining areas: an average weighted by NOAA.LAND_SQKM.
What it goes with
The strongest links that have a page of their own. Unadjusted is the link before adjusting for anything, from −1 (opposite) to +1 (in step). Adjusted compares places with the same population density, income and education levels, so those differences can’t explain the link. This list leaves out the 2 pairs built from the same numbers or the same model as this measure, since they are bound to match.
| Measure | Unadjusted | Adjusted |
|---|---|---|
| Cooling degree days and Days of 90°F or hotterWhere Cooling degree days is higher, Days of 90°F or hotter tends to be higher: a strong link that holds when only places with similar density, income and education are compared, and inside states as well. Days of 90°F or hotter by US county | +0.94 | +0.95 |
| Cooling degree days and Summer daily highWhere Cooling degree days is higher, Summer daily high tends to be higher: a strong link that holds when only places with similar density, income and education are compared, and inside states as well. Summer daily high by US county | +0.92 | +0.92 |
| Cooling degree days and Freezing daysWhere Cooling degree days is higher, Freezing days tends to be lower: a strong link that holds when only places with similar density, income and education are compared, and inside states as well. Freezing days by US county | -0.78 | -0.81 |
| Cooling degree days and Winter daily sunlightWhere Cooling degree days is higher, Winter daily sunlight tends to be higher: a strong link that holds when only places with similar density, income and education are compared, and inside states as well. Winter daily sunlight by US county | +0.76 | +0.79 |
| Cooling degree days and Winter nightly lowWhere Cooling degree days is higher, Winter nightly low tends to be higher: a strong link that holds when only places with similar density, income and education are compared, and inside states as well. Winter nightly low by US county | +0.77 | +0.79 |
| Cooling degree days and Daily sunlightWhere Cooling degree days is higher, Daily sunlight tends to be higher: a moderate link that holds when only places with similar density, income and education are compared, and inside states as well. Daily sunlight by US county | +0.65 | +0.70 |
| Cooling degree days and Cloud coverWhere Cooling degree days is higher, Cloud cover tends to be lower: a moderate link that holds when only places with similar density, income and education are compared, and inside states as well. Cloud cover by US county | -0.57 | -0.63 |
| Cooling degree days and Adults under 65 without health insuranceWhere Cooling degree days is higher, Adults under 65 without health insurance tends to be higher: a moderate link that holds when only places with similar density, income and education are compared. Adults under 65 without health insurance by US county | +0.61 | +0.58 |
| Cooling degree days and Clear daysWhere Cooling degree days is higher, Clear days tends to be higher: a moderate link that holds when only places with similar density, income and education are compared, and inside states as well. Clear days by US county | +0.51 | +0.58 |
| Cooling degree days and Medicare spending per enrolleeWhere Cooling degree days is higher, Medicare spending per enrollee tends to be higher: a moderate link that holds when only places with similar density, income and education are compared, and inside states as well. Medicare spending per enrollee by US county | +0.58 | +0.54 |
39 more pairs with cooling degree days have a page: Returns claiming the earned income credit · Current asthma · Food insecurity · Lacking social and emotional support · Share White, not Hispanic · Cancer other than skin cancer · Housing insecurity · Threat of utility shut-off · Diagnosed diabetes · No leisure-time physical activity · Lack of reliable transportation · Vision disability · Dental visit in the past year · Fair or poor self-rated health · Mobility disability · Land surface form (flat to mountainous) · High cholesterol · Loneliness · Share Hispanic or Latino, any race · High blood pressure · Self-care disability · Depression · Expected yearly hurricane loss · People per tax return · Taking blood pressure medication · Returns reporting unemployment compensation · Share Black, not Hispanic · Sleeping less than 7 hours · Evangelical Protestant adherents · Black-white residential segregation · Material security score · Disability-free score · Child poverty rate, ages 0-17 · Prison population rate · Motor vehicle crash deaths · Share separated · Any disability · Children in single-parent households · Economic connectedness.
Population makeup
How this measure varies with the racial and ethnic makeup of counties. Every group is shown, whatever its rank. These are links across counties: they describe places, not people. They say nothing about any person’s risk or behaviour based on their race. Counties with a larger share of one group also differ in much else, such as income, segregation, region and history. The adjusted figure only accounts for density, income and education.
| Share of residents | Unadjusted | Adjusted |
|---|---|---|
| Cooling degree days and Share White, not HispanicWhere Cooling degree days is higher, Share White, not Hispanic tends to be lower: a moderate link that holds when only places with similar density, income and education are compared, and inside states as well. Share White, not Hispanic by US county | -0.51 | -0.50 |
| Cooling degree days and Share Black, not HispanicWhere Cooling degree days is higher, Share Black, not Hispanic tends to be higher: a weak link that holds when only places with similar density, income and education are compared, and inside states as well. Share Black, not Hispanic by US county | +0.42 | +0.37 |
| Cooling degree days and Share Hispanic or Latino, any raceWhere Cooling degree days is higher, Share Hispanic or Latino, any race tends to be higher: a moderate link that holds when only places with similar density, income and education are compared, and inside states as well. Share Hispanic or Latino, any race by US county | +0.36 | +0.40 |
| Cooling degree days and Share Asian, not HispanicCould easily be chance once only places with similar density, income and education are compared. Share Asian, not Hispanic by US county | -0.03 | +0.03 |
| Cooling degree days and Share American Indian or Alaska Native, not HispanicCould easily be chance once only places with similar density, income and education are compared. Share American Indian or Alaska Native, not Hispanic by US county | -0.10 | -0.09 |
Highest and lowest
Of 3,108 counties reporting it. These are the two ends of a national ranking. For most measures, that ranking mostly sorts places by income and how urban they are. That is why the place pages compare each place with similar places instead.
Highest
- Monroe County, FL — 4,995
- Starr County, TX — 4,909
- Hidalgo County, TX — 4,870
- Miami-Dade County, FL — 4,834
- Zapata County, TX — 4,830
Lowest
The middle area reports 1,098. The middle half of counties falls between 650 and 1,840 (the 25th to 75th percentile).
US Counties With the Highest Cooling Degree Days · US Counties With the Lowest Cooling Degree Days
All measures · Explore its pairs · How the US county data works