Climate of Ontario

Ontario has a mediterranean climate. The summers are hot and dry, and the temperature is mild in the winter. The average annual temperature for Ontario is 46° degrees and there is about 61 inch of rain in a year. It is dry for 304 days a year with an average humidity of 49% and an UV-index of 5.

Climate averages for the whole year

Day: the average daily temperature during the day is between 17°C and 33°C
Night:the average nighttime temperature is between 7°C and 18°C
Rain: it rains 46 days and there is a total of approximately 155 mm rainfall
Sun hours: throughout the year there are 3597 sun hours

Maximum temperature:	between 17°C and 33°C
Warmest month:	33°C in August
Coldest month:	17°C in December
Night temperature:	between 7°C and 18°C
Dry days:	319 days
Days with rain:	46 days
Days with snow:	0 days
Total rain sum:	155 mm
Hours of sunshine:	3597 hours

Climate of Ontario
Temperature graph
Precipitation graph
Climate chart of Ontario
The best travel time for Ontario
Climate of Ontario by month
Experiences with the weather of Ontario

Do you want to go to Ontario?

These are the travel companies where you can book a trip to Ontario:

Booking.com

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Ontario.

Precipitation graph

This graph shows the average amount of rainfall per month for Ontario.

Climate table of Ontario

In this climate table you can see at a glance what the average weather per month is for Ontario. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Ontario might be like in a given month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day temp. (°F)	64	64	69	73	77	84	90	90	88	79	70	62
Night temp. (°F)	46	45	47	49	53	58	64	65	64	57	51	46
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (inch)	13	19	5	2	1	0	2	1	1	2	4	11
Days with rain	6	6	6	5	3	1	3	1	2	3	4	6
Dry days	25	22	25	25	28	29	28	30	28	28	26	25
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sun hours per day	7	7	9	12	12	12	12	12	11	9	7	7
Wind force (Bft)	2	2	2	2	2	2	2	2	2	2	2	2
UV-index	4	4	5	5	5	6	6	6	6	5	4	3

Best time to visit Ontario

The best time to visit Ontario in the state of California is from January through July and September through November. In this period you have a hot temperature and almost no precipitation. The highest average temperature in Ontario is 90°F in July and the lowest is 62°F in December.

Climate of Ontario by month

What is the average climate in a given month for Ontario? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

January