+34.0633° · -117.6509° · ELEV 0m
Ontario
United States · California
Monthly weather averages for Ontario, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
August → JanuaryClimate Overview
Ontario has a Mediterranean climate. The warmest month is August (34°C average high) and the coolest is December (18°C).
№ 02
444 mm / yearRainfall by Month
Ontario sees 444 mm of rain a year. The wettest month is January (96 mm); the driest is June (1 mm).
№ 03
April–JuneBest Time to Visit
April–June
11°C – 30°C · 11.8h sun
The best time to visit Ontario is April–June, when temperatures average 11°C–30°C with 11.8 sunshine hours per day.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | 18.5°C | 7.6°C | 96 mm | 8.3 h | 06:55 | 17:03 |
|---|---|---|---|---|---|---|
| February | 19.7°C | 7.6°C | 63 mm | 9.2 h | 06:35 | 17:34 |
| March | 20.7°C | 9.2°C | 81 mm | 10.0 h | 07:01 | 18:58 |
| April | 24.3°C | 11.3°C | 24 mm | 11.0 h | 06:19 | 19:21 |
| May | 25.1°C | 12.6°C | 15 mm | 11.5 h | 05:49 | 19:44 |
| June | 30.1°C | 15.5°C | 1 mm | 12.9 h | 05:38 | 20:03 |
| July | 33.4°C | 18.3°C | 3 mm | 13.5 h | 05:50 | 20:02 |
| August | 33.9°C | 19.1°C | 9 mm | 12.5 h | 06:12 | 19:38 |
| September | 32.1°C | 18.2°C | 19 mm | 11.2 h | 06:33 | 18:57 |
| October | 28.3°C | 15.2°C | 14 mm | 10.1 h | 06:55 | 18:16 |
| November | 23.2°C | 10.6°C | 30 mm | 9.4 h | 06:23 | 16:47 |
| December | 18.0°C | 7.6°C | 89 mm | 8.0 h | 06:48 | 16:42 |