On average across the year, no, New Hampshire is not hotter than Delaware . New Hampshire has an average temperature of 9°C/48°F and Delaware has an average temperature of 13°C/55°F.
New Hampshire's hottest month is July, with an average maximum temperature of 29°C/84°F, which is not hotter than Delaware's hottest month (also July, with an average maximum temperature of 31°C/88°F).
On average across the year, yes, New Hampshire is colder than Delaware . New Hampshire has an average minimum temperature of 3°C/37°F and Delaware has an average minimum temperature of 8°C/46°F.
New Hampshire's coldest month is January, with an average minimum temperature of -9°C/16°F, which is colder than Delaware's coldest month (also January, with an average minimum temperature of -4°C/25°F).
On average across the year, no, New Hampshire has less rain than Delaware. New Hampshire has an average annual rainfall of 1196mm and Delaware has an average annual rainfall of 1323mm.
New Hampshire's wettest month is October, with an average monthly rainfall of 130mm, which is drier than Delaware's wettest month (August, with an average monthly rainfall of 148mm).