Counties in New Hampshire by average annual temperature

Rockingham County had the highest average annual temperature of 10 counties in 2014, at 47 °F. Coos County had the lowest, at 39.4 °F. The median was 44.6 °F and the figure for New Hampshire was 43.1 °F. Source: NOAA National Centers for Environmental Information.

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Lowest39.4Coos County
Median44.610 counties
New Hampshire43.1History

Map of counties, 2014

Belknap County: 44.5 °FCarroll County: 42.7 °FCheshire County: 44.7 °FCoos County: 39.4 °FGrafton County: 41.5 °FHillsborough County: 45.9 °FMerrimack County: 44.7 °FRockingham County: 47 °FStrafford County: 45.5 °FSullivan County: 43.1 °F
  • Under 42
  • 42 to 44
  • 44 to 45
  • 45 to 46
  • 46 and over
°F, 2014. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2014

Rockingham County: 47 °FRockingham County47Hillsborough County: 45.9 °FHillsborough County45.9Strafford County: 45.5 °FStrafford County45.5Cheshire County: 44.7 °FCheshire County44.7Merrimack County: 44.7 °FMerrimack County44.7Belknap County: 44.5 °FBelknap County44.5Sullivan County: 43.1 °FSullivan County43.1Carroll County: 42.7 °FCarroll County42.7Grafton County: 41.5 °FGrafton County41.5Coos County: 39.4 °FCoos County39.4Rockingham County: 47 °FRockingham County47Hillsborough County: 45.9 °FHillsborough County45.9Strafford County: 45.5 °FStrafford County45.5Cheshire County: 44.7 °FCheshire County44.7Merrimack County: 44.7 °FMerrimack County44.7Belknap County: 44.5 °FBelknap County44.5Sullivan County: 43.1 °FSullivan County43.1Carroll County: 42.7 °FCarroll County42.7Grafton County: 41.5 °FGrafton County41.5Coos County: 39.4 °FCoos County39.4
°F. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Retrieved 2026-10-12.

Full ranking

RankCounties2014
°F
Change on 2013
1Rockingham County47-2.1%
2Hillsborough County45.9-2.1%
3Strafford County45.5-1.9%
4Cheshire County44.7-2.4%
4Merrimack County44.7-2.6%
6Belknap County44.5-2.6%
7Sullivan County43.1-3.4%
8Carroll County42.7-2.5%
9Grafton County41.5-2.8%
10Coos County39.4-3%

Other periods

About this ranking

Mean air temperature from January to December, in degrees Fahrenheit: the average of the 12 monthly mean temperatures. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.

Values are area averages, so a county with mountains and valleys has one value for very different local climates. NOAA revises the last two years every month.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, counties. 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/county/mapping. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

NOAA National Centers for Environmental Information. (2026). NOAA Climate at a Glance, January to December average temperature, counties (Counties in New Hampshire by average annual temperature, 2014) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping

MLA 9

NOAA Climate at a Glance, January to December average temperature, counties, Counties in New Hampshire by average annual temperature, 2014. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Invokely, https://invokely.ai/rankings/average-annual-temperature/new-hampshire-counties?period=2014. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December average temperature, counties. Counties in New Hampshire by average annual temperature, 2014. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Also distributed by Invokely, https://invokely.ai/rankings/average-annual-temperature/new-hampshire-counties?period=2014.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in New Hampshire by average annual temperature, 2014 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/average-annual-temperature/new-hampshire-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_counties_in_new_hampshire_2014,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in New Hampshire by average annual temperature, 2014}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/new-hampshire-counties?period=2014. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, counties. 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/county/mapping. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - NOAA National Centers for Environmental Information
TI  - NOAA Climate at a Glance, January to December average temperature, counties: Counties in New Hampshire by average annual temperature, 2014
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/county/mapping
L2  - https://invokely.ai/rankings/average-annual-temperature/new-hampshire-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/new-hampshire-counties?period=2014.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, counties. 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/county/mapping. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest average annual temperature?

Rockingham County, with 47 °F in 2014, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Coos County, with 39.4 °F in 2014.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December average temperature, counties. Retrieved 2026-10-12.

Average annual temperature: other rankings

Counties in New Hampshire: more rankings