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Weather Ontario: Current forecast

Ontario / California (CA) / United States

26.1 °C
Feels like 27.5 °C
Min 19 °C / Max 37 °C
Weather Ontario: Clear, 26 °C Clear
6 mph WSW
Wind
7 mph WSW
Gusts
1014 hPa
Pressure
0 mm
Precipitation
52 %
Humidity
0
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass High
Mugwort Moderate
Ragweed None
05:52 / 20:01
Sunrise / Sunset
10:31 / 22:50
Moonrise / Moonset
Waxing Crescent (23 %)
Moon phase

Updated: Jul 19, 2026, 6:41 CEST Jul 18, 2026, 21:41 PDT

Today's Summary

If you head out in Ontario today, you'll see a clear sky. The thermometer currently shows 26.1°C. Wear light, breathable clothes and drink plenty of fluids. During the day temperatures will range between 19.1°C and 36.7°C.

Hourly forecast – Ontario, today

Jul 18, 22:00
21 °C
Clear
Ontario Jul 18, 22:00: Clear, 21 °C
Jul 18, 23:00
21 °C
Clear
Ontario Jul 18, 23:00: Clear, 21 °C
Jul 19, 00:00
20 °C
Clear
Ontario Jul 19, 00:00: Clear, 20 °C
Jul 19, 01:00
19 °C
Clear
Ontario Jul 19, 01:00: Clear, 19 °C
Jul 19, 02:00
19 °C
Clear
Ontario Jul 19, 02:00: Clear, 19 °C
Jul 19, 03:00
18 °C
Mist
Ontario Jul 19, 03:00: Mist, 18 °C
Jul 19, 04:00
18 °C
Mist
Ontario Jul 19, 04:00: Mist, 18 °C
Jul 19, 05:00
19 °C
Partly cloudy
Ontario Jul 19, 05:00: Partly cloudy, 19 °C
Jul 19, 06:00
21 °C
Sunny
Ontario Jul 19, 06:00: Sunny, 21 °C
Jul 19, 07:00
24 °C
Sunny
Ontario Jul 19, 07:00: Sunny, 24 °C
Jul 19, 08:00
26 °C
Sunny
Ontario Jul 19, 08:00: Sunny, 26 °C
Jul 19, 09:00
30 °C
Sunny
Ontario Jul 19, 09:00: Sunny, 30 °C
Jul 19, 10:00
32 °C
Sunny
Ontario Jul 19, 10:00: Sunny, 32 °C
Jul 19, 11:00
33 °C
Sunny
Ontario Jul 19, 11:00: Sunny, 33 °C
Jul 19, 12:00
33 °C
Sunny
Ontario Jul 19, 12:00: Sunny, 33 °C
Jul 19, 13:00
33 °C
Sunny
Ontario Jul 19, 13:00: Sunny, 33 °C
Jul 19, 14:00
33 °C
Sunny
Ontario Jul 19, 14:00: Sunny, 33 °C
Jul 19, 15:00
32 °C
Sunny
Ontario Jul 19, 15:00: Sunny, 32 °C
Jul 19, 16:00
31 °C
Sunny
Ontario Jul 19, 16:00: Sunny, 31 °C
Jul 19, 17:00
30 °C
Sunny
Ontario Jul 19, 17:00: Sunny, 30 °C
Jul 19, 18:00
28 °C
Sunny
Ontario Jul 19, 18:00: Sunny, 28 °C
Jul 19, 19:00
26 °C
Clear
Ontario Jul 19, 19:00: Clear, 26 °C
Jul 19, 20:00
25 °C
Clear
Ontario Jul 19, 20:00: Clear, 25 °C
Jul 19, 21:00
25 °C
Clear
Ontario Jul 19, 21:00: Clear, 25 °C
Time
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
Ontario Jul 18, 22:00: Clear
Ontario Jul 18, 23:00: Clear
Ontario Jul 19, 00:00: Clear
Ontario Jul 19, 01:00: Clear
Ontario Jul 19, 02:00: Clear
Ontario Jul 19, 03:00: Mist
Ontario Jul 19, 04:00: Mist
Ontario Jul 19, 05:00: Partly cloudy
Ontario Jul 19, 06:00: Sunny
Ontario Jul 19, 07:00: Sunny
Ontario Jul 19, 08:00: Sunny
Ontario Jul 19, 09:00: Sunny
Ontario Jul 19, 10:00: Sunny
Ontario Jul 19, 11:00: Sunny
Ontario Jul 19, 12:00: Sunny
Ontario Jul 19, 13:00: Sunny
Ontario Jul 19, 14:00: Sunny
Ontario Jul 19, 15:00: Sunny
Ontario Jul 19, 16:00: Sunny
Ontario Jul 19, 17:00: Sunny
Ontario Jul 19, 18:00: Sunny
Ontario Jul 19, 19:00: Clear
Ontario Jul 19, 20:00: Clear
Ontario Jul 19, 21:00: Clear
Temperature (°C)
Chance of rain (%)
8
9
11
13
16
19
21
18
11
6
3
1
1
1
1
1
1
1
1
1
1
1
2
2
Precipitation
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Wind (mph)
WSW
4
WSW
4
WSW
3
WSW
3
WSW
4
WSW
4
WSW
4
WSW
3
SW
2
SSW
2
SSW
3
SW
5
WSW
7
WSW
9
WSW
11
WSW
11
WSW
11
WSW
11
WSW
10
SW
9
WSW
7
WSW
7
WSW
6
WSW
5
Pressure (hPa)
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1012
1012
1012
1011
1011
1011
1011
1011
1012
1012
1013
1014
Humidity (%)
76 %
80 %
85 %
88 %
94 %
96 %
97 %
93 %
83 %
70 %
59 %
33 %
28 %
26 %
26 %
25 %
25 %
26 %
27 %
30 %
35 %
40 %
44 %
47 %
Cloud cover (%)
1 %
1 %
2 %
2 %
12 %
30 %
44 %
33 %
10 %
8 %
5 %
10 %
10 %
13 %
14 %
10 %
8 %
8 %
8 %
10 %
12 %
14 %
17 %
22 %

14-day weather forecast – Ontario

14-day trend for Ontario: Temperatures stay fairly stable over the period with no big swings. Lows can drop to around 18.1°C at night, with daytime highs up to 39.5°C.

Date
Jul 18
Jul 19
Jul 20
Jul 21
Jul 22
Jul 23
Jul 24
Jul 25
Jul 26
Jul 27
Jul 28
Jul 29
Jul 30
Jul 31
Ontario July 18, 2026: Sunny
Ontario July 19, 2026: Sunny
Ontario July 20, 2026: Sunny
Ontario July 21, 2026: Sunny
Ontario July 22, 2026: Sunny
Ontario July 23, 2026: Sunny
Ontario July 24, 2026: Sunny
Ontario July 25, 2026: Sunny
Ontario July 26, 2026: Sunny
Ontario July 27, 2026: Sunny
Ontario July 28, 2026: Sunny
Ontario July 29, 2026: Sunny
Ontario July 30, 2026: Sunny
Ontario July 31, 2026: Sunny
Temperature (°C)
Chance of rain (%)
3
3
2
2
1
1
2
36
1
0
0
1
1
1
Precipitation
—
—
—
0 mm
—
—
0 mm
0.3 mm
—
—
—
—
—
—
Wind max (mph)
12
11
11
11
10
12
10
12
11
11
11
10
12
11
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
July 18, 2026 Ontario July 18, 2026: Sunny Sunny 19 °C 37 °C 05:52 20:01 10:31 22:50 Waxing Crescent (23 %)
July 19, 2026 Ontario July 19, 2026: Sunny Sunny 18 °C 33 °C 05:52 20:00 11:38 23:19 First Quarter (33 %)
July 20, 2026 Ontario July 20, 2026: Sunny Sunny 23 °C 33 °C 05:53 20:00 12:43 23:48 First Quarter (43 %)
July 21, 2026 Ontario July 21, 2026: Sunny Sunny 23 °C 34 °C 05:54 19:59 13:47 Does not set today First Quarter (53 %)
July 22, 2026 Ontario July 22, 2026: Sunny Sunny 23 °C 36 °C 05:55 19:59 14:51 00:20 First Quarter (64 %)
July 23, 2026 Ontario July 23, 2026: Sunny Sunny 25 °C 39 °C 05:55 19:58 15:54 00:56 Waxing Moon (74 %)
July 24, 2026 Ontario July 24, 2026: Sunny Sunny 26 °C 37 °C 05:56 19:57 16:53 01:38 Waxing Moon (82 %)
July 25, 2026 Ontario July 25, 2026: Sunny Sunny 25 °C 36 °C 05:57 19:57 17:47 02:25 Waxing Moon (90 %)
July 26, 2026 Ontario July 26, 2026: Sunny Sunny 25 °C 37 °C 05:57 19:56 18:36 03:18 Waxing Moon (95 %)
July 27, 2026 Ontario July 27, 2026: Sunny Sunny 25 °C 39 °C 05:58 19:55 19:17 04:14 Full Moon (99 %)
July 28, 2026 Ontario July 28, 2026: Sunny Sunny 25 °C 40 °C 05:59 19:55 19:53 05:13 Full Moon (100 %)
July 29, 2026 Ontario July 29, 2026: Sunny Sunny 24 °C 35 °C 05:59 19:54 20:23 06:12 Full Moon (99 %)
July 30, 2026 Ontario July 30, 2026: Sunny Sunny 23 °C 37 °C 06:00 19:53 20:50 07:10 Waning Moon (96 %)
July 31, 2026 Ontario July 31, 2026: Sunny Sunny 24 °C 37 °C 06:01 19:52 21:15 08:07 Waning Moon (91 %)
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