Niihama vs Portsmouth Heights Climate
92%matchNiihama and Portsmouth Heights are a 92% climate match. Compared with Niihama, Portsmouth Heights has the same summer highs and more rain in winter.
Niihama gets 63 in (1607 mm) of rain a year and Portsmouth Heights 50 in (1278 mm). Niihama's warmest month is August, at 90°F (32°C); Portsmouth Heights's is July, at 89°F (32°C).
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
NiihamaPortsmouth Heightssolid = high, dashed = low
Rain (in per month)
NiihamaPortsmouth Heights
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Niihama | Portsmouth Heights | Niihama | Portsmouth Heights | Niihama | Portsmouth Heights | |
| Jan | 51°F(10°C) | 50°F(10°C) | 35°F(2°C) | 33°F(1°C) | 1.7 in(44 mm) | 3.7 in(94 mm) |
| Feb | 53°F(11°C) | 54°F(12°C) | 36°F(2°C) | 35°F(2°C) | 2.4 in(62 mm) | 3.2 in(82 mm) |
| Mar | 59°F(15°C) | 61°F(16°C) | 42°F(6°C) | 41°F(5°C) | 4.2 in(107 mm) | 3.9 in(100 mm) |
| Apr | 67°F(20°C) | 70°F(21°C) | 50°F(10°C) | 49°F(10°C) | 5.7 in(144 mm) | 3.4 in(87 mm) |
| May | 76°F(24°C) | 78°F(26°C) | 59°F(15°C) | 59°F(15°C) | 6.5 in(165 mm) | 4.0 in(102 mm) |
| Jun | 81°F(27°C) | 85°F(30°C) | 67°F(20°C) | 68°F(20°C) | 9.6 in(243 mm) | 4.6 in(117 mm) |
| Jul | 87°F(31°C) | 89°F(32°C) | 75°F(24°C) | 72°F(22°C) | 9.3 in(235 mm) | 5.6 in(143 mm) |
| Aug | 90°F(32°C) | 87°F(31°C) | 76°F(25°C) | 70°F(21°C) | 3.5 in(89 mm) | 5.2 in(132 mm) |
| Sep | 84°F(29°C) | 81°F(27°C) | 69°F(21°C) | 65°F(18°C) | 8.5 in(216 mm) | 5.2 in(132 mm) |
| Oct | 75°F(24°C) | 73°F(23°C) | 59°F(15°C) | 54°F(12°C) | 6.7 in(169 mm) | 4.3 in(110 mm) |
| Nov | 64°F(18°C) | 62°F(17°C) | 48°F(9°C) | 43°F(6°C) | 3.1 in(78 mm) | 3.3 in(85 mm) |
| Dec | 55°F(13°C) | 55°F(13°C) | 38°F(4°C) | 36°F(2°C) | 2.2 in(55 mm) | 3.7 in(94 mm) |
1991–2020 averages, by calendar month.