Rancho Cucamonga vs El Cajon Climate
87%matchRancho Cucamonga vs El Cajon: a 87% climate match. Compared with Rancho Cucamonga, El Cajon has 4°F (2°C) cooler summer days and more humid air.
Rancho Cucamonga gets 13 in (336 mm) of rain a year and El Cajon 11 in (280 mm). August is the warmest month in both, with highs of 93°F (34°C) in Rancho Cucamonga and 89°F (32°C) in El Cajon.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
Rancho CucamongaEl Cajonsolid = high, dashed = low
Rain (in per month)
Rancho CucamongaEl Cajon
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Rancho Cucamonga | El Cajon | Rancho Cucamonga | El Cajon | Rancho Cucamonga | El Cajon | |
| Jan | 68°F(20°C) | 69°F(21°C) | 43°F(6°C) | 45°F(7°C) | 2.7 in(69 mm) | 2.0 in(50 mm) |
| Feb | 68°F(20°C) | 70°F(21°C) | 43°F(6°C) | 46°F(8°C) | 3.0 in(77 mm) | 2.4 in(60 mm) |
| Mar | 71°F(22°C) | 72°F(22°C) | 46°F(8°C) | 48°F(9°C) | 2.0 in(51 mm) | 1.7 in(42 mm) |
| Apr | 76°F(24°C) | 76°F(24°C) | 48°F(9°C) | 51°F(10°C) | 1.1 in(28 mm) | 1.0 in(26 mm) |
| May | 79°F(26°C) | 77°F(25°C) | 53°F(12°C) | 55°F(13°C) | 0.3 in(8 mm) | 0.3 in(8 mm) |
| Jun | 85°F(30°C) | 81°F(27°C) | 57°F(14°C) | 58°F(15°C) | 0.0 in(1 mm) | 0.1 in(2 mm) |
| Jul | 91°F(33°C) | 86°F(30°C) | 61°F(16°C) | 62°F(16°C) | 0.0 in(1 mm) | 0.1 in(2 mm) |
| Aug | 93°F(34°C) | 89°F(32°C) | 63°F(17°C) | 63°F(17°C) | 0.1 in(2 mm) | 0.1 in(2 mm) |
| Sep | 90°F(32°C) | 88°F(31°C) | 60°F(16°C) | 62°F(17°C) | 0.2 in(5 mm) | 0.2 in(4 mm) |
| Oct | 82°F(28°C) | 83°F(28°C) | 54°F(12°C) | 56°F(14°C) | 0.4 in(11 mm) | 0.4 in(10 mm) |
| Nov | 74°F(24°C) | 76°F(25°C) | 46°F(8°C) | 49°F(9°C) | 1.1 in(27 mm) | 1.1 in(27 mm) |
| Dec | 67°F(20°C) | 69°F(21°C) | 41°F(5°C) | 44°F(7°C) | 2.2 in(56 mm) | 1.9 in(47 mm) |
1991–2020 averages, by calendar month.