Riverside vs Altadena Climate
99%matchRiverside vs Altadena: a 99% climate match. Compared with Riverside, Altadena has the same winter lows and 4°F (2°C) cooler summer days.
Riverside gets 12 in (294 mm) of rain a year and Altadena 16 in (413 mm). August is the warmest month in both, with highs of 95°F (35°C) in Riverside and 91°F (33°C) in Altadena.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
RiversideAltadenasolid = high, dashed = low
Rain (in per month)
RiversideAltadena
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Riverside | Altadena | Riverside | Altadena | Riverside | Altadena | |
| Jan | 68°F(20°C) | 68°F(20°C) | 43°F(6°C) | 43°F(6°C) | 2.4 in(60 mm) | 3.4 in(87 mm) |
| Feb | 69°F(21°C) | 67°F(20°C) | 44°F(7°C) | 44°F(7°C) | 2.7 in(68 mm) | 3.9 in(98 mm) |
| Mar | 72°F(22°C) | 70°F(21°C) | 46°F(8°C) | 46°F(8°C) | 1.8 in(45 mm) | 2.7 in(68 mm) |
| Apr | 77°F(25°C) | 74°F(23°C) | 49°F(10°C) | 48°F(9°C) | 0.9 in(22 mm) | 1.3 in(32 mm) |
| May | 80°F(27°C) | 77°F(25°C) | 54°F(12°C) | 53°F(12°C) | 0.3 in(7 mm) | 0.3 in(8 mm) |
| Jun | 86°F(30°C) | 82°F(28°C) | 58°F(14°C) | 57°F(14°C) | 0.1 in(2 mm) | 0.1 in(3 mm) |
| Jul | 92°F(34°C) | 89°F(32°C) | 62°F(17°C) | 61°F(16°C) | 0.1 in(2 mm) | 0.1 in(2 mm) |
| Aug | 95°F(35°C) | 91°F(33°C) | 63°F(17°C) | 62°F(17°C) | 0.1 in(2 mm) | 0.0 in(1 mm) |
| Sep | 91°F(33°C) | 88°F(31°C) | 60°F(16°C) | 60°F(15°C) | 0.2 in(5 mm) | 0.2 in(4 mm) |
| Oct | 83°F(29°C) | 81°F(27°C) | 54°F(12°C) | 54°F(12°C) | 0.4 in(11 mm) | 0.6 in(15 mm) |
| Nov | 75°F(24°C) | 73°F(23°C) | 47°F(8°C) | 47°F(8°C) | 0.9 in(22 mm) | 1.2 in(31 mm) |
| Dec | 68°F(20°C) | 67°F(19°C) | 42°F(6°C) | 43°F(6°C) | 1.9 in(48 mm) | 2.5 in(64 mm) |
1991–2020 averages, by calendar month.