Cooling degree days in Mississippi was 2,510 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is down 2.6% from 2024. That is the 5th highest of 48 states in 2025.
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Cooling degree days, 2025, degree days (base 65°F). Mississippi is outlined. Same source and period for every area shown. Source: NOAA National Centers for Environmental Information. Boundaries: U.S. Census Bureau cartographic boundary files.
Sum over January to December of the degrees by which the daily mean temperature exceeds 65°F, a measure of cooling demand. NOAA estimates monthly values from nClimDiv temperatures and weights areas by population (2010 Census).
NOAA publishes these for operational monitoring; they can differ from official degree day publications.
NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
Citation styles
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APA 7
NOAA National Centers for Environmental Information. (2026). NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide (Cooling degree days, Mississippi, 1895 to 2025) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json
MLA 9
NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide, Cooling degree days, Mississippi, 1895 to 2025. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/en/cooling-degree-days/mississippi. Accessed 12 Oct. 2026.
Chicago (author-date)
NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. Cooling degree days, Mississippi, 1895 to 2025. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/en/cooling-degree-days/mississippi.
Harvard
NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide, Cooling degree days, Mississippi, 1895 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/en/cooling-degree-days/mississippi (Accessed: 12 October 2026).
BibTeX
@misc{noaa_cooling_degree_days_mississippi_2025,
author = {{NOAA National Centers for Environmental Information}},
title = {{NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide: Cooling degree days, Mississippi, 1895 to 2025}},
year = {2026},
howpublished = {Data set},
url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/en/cooling-degree-days/mississippi. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - NOAA National Centers for Environmental Information
TI - NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide: Cooling degree days, Mississippi, 1895 to 2025
PY - 2026
DA - 2026/10/06
PB - NOAA National Centers for Environmental Information
DB - Invokely
UR - https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json
L2 - https://invokely.ai/en/cooling-degree-days/mississippi
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/en/cooling-degree-days/mississippi.
N1 - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/22/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
ER -
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Cooling degree days in Mississippi was 2,510 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is down 2.6% from 2024. That is the 5th highest of 48 states in 2025.
Where does this figure come from?
NOAA National Centers for Environmental Information. NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. Retrieved by Invokely on 2026-10-12.
What was the highest cooling degree days in Mississippi?
2,577 degree days (base 65°F) in 2024, the highest value since 1895 in this series.