Average Temperatures for New Hampshire in May





Average temperatures for May at cities, towns, parks and lakes throughout New Hampshire are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for Southern and Northern New Hampshire.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US National Climatic Data Center.

Southern New Hampshire

Average May temperatures
High °F Low °F Place High °C Low °C
69 43 Concord 21 6
69 44 Durham 21 6
69 42 Franklin Falls Reservoir Dam 20 5
70 42 Keene 21 6
68 45 Laconia & Lakeport 20 7
69 44 Lebanon 21 6
69 46 Massabesic Lake 20 8
66 44 Mount Sunapee 19 7
69 44 Nashua 21 7
68 43 Portsmouth & Greenland 20 6
68 42 Surry Mountain Lake 20 6

Northern New Hampshire

Average daily temperatures in May
High °F Low °F Place High °C Low °C
66 41 Berlin 19 5
67 39 Bethlehem 19 4
64 38 Colebrook 18 4
61 37 First Connecticut Lake 16 3
41 30 Mount Washington 5 -1
66 42 North Conway 19 5
61 40 Pinkham Notch 16 4
67 39 Plymouth 19 4
66 39 Tamworth 19 4
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

New Hampshire Temperatures
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