Dailymet

Weather Ontario: Current forecast

Ontario / California (CA) / United States

79.7 °F
Feels like 75.2 °F
Min 64 °F / Max 80 °F
Weather Ontario: Sunny, 80 °F Sunny
8.9 mph WSW
Wind
17.9 mph WSW
Gusts
1012 hPa
Pressure
0 mm
Precipitation
38 %
Humidity
7.5
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass Low
Mugwort Low
Ragweed High
06:37 / 18:50
Sunrise / Sunset
15:54 / 00:57
Moonrise / Moonset
Waxing Moon (73 %)
Moon phase

Updated: Sep 20, 2026, 23:25 CEST Sep 20, 2026, 14:25 PDT

Today's Summary

In Ontario the weather today is sunny. The thermometer currently shows 26.5°C. UV radiation is high today – sun cream and sunglasses are essential. During the day temperatures will range between 17.8°C and 26.9°C.

Hourly forecast – Ontario, today

Sep 20, 14:00
79 °F
Overcast
Ontario Sep 20, 14:00: Overcast, 79 °F
Sep 20, 15:00
76 °F
Overcast
Ontario Sep 20, 15:00: Overcast, 76 °F
Sep 20, 16:00
73 °F
Overcast
Ontario Sep 20, 16:00: Overcast, 73 °F
Sep 20, 17:00
71 °F
Overcast
Ontario Sep 20, 17:00: Overcast, 71 °F
Sep 20, 18:00
68 °F
Cloudy
Ontario Sep 20, 18:00: Cloudy, 68 °F
Sep 20, 19:00
67 °F
Cloudy
Ontario Sep 20, 19:00: Cloudy, 67 °F
Sep 20, 20:00
67 °F
Cloudy
Ontario Sep 20, 20:00: Cloudy, 67 °F
Sep 20, 21:00
67 °F
Partly cloudy
Ontario Sep 20, 21:00: Partly cloudy, 67 °F
Sep 20, 22:00
66 °F
Cloudy
Ontario Sep 20, 22:00: Cloudy, 66 °F
Sep 20, 23:00
65 °F
Overcast
Ontario Sep 20, 23:00: Overcast, 65 °F
Sep 21, 00:00
65 °F
Clear
Ontario Sep 21, 00:00: Clear, 65 °F
Sep 21, 01:00
64 °F
Overcast
Ontario Sep 21, 01:00: Overcast, 64 °F
Sep 21, 02:00
64 °F
Partly cloudy
Ontario Sep 21, 02:00: Partly cloudy, 64 °F
Sep 21, 03:00
63 °F
Cloudy
Ontario Sep 21, 03:00: Cloudy, 63 °F
Sep 21, 04:00
63 °F
Overcast
Ontario Sep 21, 04:00: Overcast, 63 °F
Sep 21, 05:00
63 °F
Patchy rain possible
Ontario Sep 21, 05:00: Patchy rain possible, 63 °F
Sep 21, 06:00
64 °F
Partly cloudy
Ontario Sep 21, 06:00: Partly cloudy, 64 °F
Sep 21, 07:00
66 °F
Partly cloudy
Ontario Sep 21, 07:00: Partly cloudy, 66 °F
Sep 21, 08:00
68 °F
Partly cloudy
Ontario Sep 21, 08:00: Partly cloudy, 68 °F
Sep 21, 09:00
70 °F
Partly cloudy
Ontario Sep 21, 09:00: Partly cloudy, 70 °F
Sep 21, 10:00
73 °F
Sunny
Ontario Sep 21, 10:00: Sunny, 73 °F
Sep 21, 11:00
75 °F
Sunny
Ontario Sep 21, 11:00: Sunny, 75 °F
Sep 21, 12:00
77 °F
Sunny
Ontario Sep 21, 12:00: Sunny, 77 °F
Sep 21, 13:00
76 °F
Sunny
Ontario Sep 21, 13:00: Sunny, 76 °F
Time
14
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
Ontario Sep 20, 14:00: Overcast
Ontario Sep 20, 15:00: Overcast
Ontario Sep 20, 16:00: Overcast
Ontario Sep 20, 17:00: Overcast
Ontario Sep 20, 18:00: Cloudy
Ontario Sep 20, 19:00: Cloudy
Ontario Sep 20, 20:00: Cloudy
Ontario Sep 20, 21:00: Partly cloudy
Ontario Sep 20, 22:00: Cloudy
Ontario Sep 20, 23:00: Overcast
Ontario Sep 21, 00:00: Clear
Ontario Sep 21, 01:00: Overcast
Ontario Sep 21, 02:00: Partly cloudy
Ontario Sep 21, 03:00: Cloudy
Ontario Sep 21, 04:00: Overcast
Ontario Sep 21, 05:00: Patchy rain possible
Ontario Sep 21, 06:00: Partly cloudy
Ontario Sep 21, 07:00: Partly cloudy
Ontario Sep 21, 08:00: Partly cloudy
Ontario Sep 21, 09:00: Partly cloudy
Ontario Sep 21, 10:00: Sunny
Ontario Sep 21, 11:00: Sunny
Ontario Sep 21, 12:00: Sunny
Ontario Sep 21, 13:00: Sunny
Temperature (°F)
Chance of rain (%)
10
11
12
13
12
12
13
9
15
16
7
18
9
17
22
20
10
9
8
6
2
1
1
1
Precipitation
0 mm
Wind (mph)
SW
11
SW
10
SW
10
SW
9
SW
9
WSW
5
SW
4
SW
4
SW
6
SW
5
SW
5
SW
4
SW
4
SW
5
SW
4
SW
2
S
4
WSW
4
SW
6
SW
5
SW
6
WSW
8
SW
9
SW
11
Pressure (hPa)
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013
1012
1012
1012
1013
1013
1013
1014
1014
1014
1013
1013
1012
1011
1011
Humidity (%)
38 %
45 %
50 %
56 %
63 %
65 %
65 %
66 %
68 %
69 %
71 %
74 %
74 %
77 %
78 %
77 %
74 %
70 %
65 %
58 %
50 %
43 %
40 %
41 %
Cloud cover (%)
100 %
100 %
100 %
100 %
83 %
78 %
82 %
54 %
84 %
88 %
18 %
89 %
29 %
74 %
98 %
87 %
28 %
46 %
44 %
45 %
1 %
5 %
2 %
0 %

14-day weather forecast – Ontario

14-day trend for Ontario: The second week looks noticeably warmer and more pleasant. Lows can drop to around 16.5°C at night, with daytime highs up to 37°C.

Date
Sep 20
Sep 21
Sep 22
Sep 23
Sep 24
Sep 25
Sep 26
Sep 27
Sep 28
Sep 29
Sep 30
Oct 1
Oct 2
Oct 3
Ontario September 20, 2026: Overcast
Ontario September 21, 2026: Sunny
Ontario September 22, 2026: Sunny
Ontario September 23, 2026: Sunny
Ontario September 24, 2026: Sunny
Ontario September 25, 2026: Sunny
Ontario September 26, 2026: Sunny
Ontario September 27, 2026: Sunny
Ontario September 28, 2026: Sunny
Ontario September 29, 2026: Sunny
Ontario September 30, 2026: Overcast
Ontario October 1, 2026: Overcast
Ontario October 2, 2026: Sunny
Ontario October 3, 2026: Sunny
Temperature (°F)
Chance of rain (%)
12
6
3
2
3
3
3
3
1
0
4
36
17
1
Precipitation
0 mm
0.3 mm
0.3 mm
Wind max (mph)
11
11
11
10
9
10
11
11
10
10
10
12
11
11
Date Weather Min °F Max °F Sunrise Sunset Moonrise Moonset Moon phase
September 20, 2026 Ontario September 20, 2026: Overcast Overcast 64 °F 80 °F 06:37 18:50 15:54 00:57 Waxing Moon (73 %)
September 21, 2026 Ontario September 21, 2026: Sunny Sunny 63 °F 77 °F 06:38 18:49 16:27 01:56 Waxing Moon (82 %)
September 22, 2026 Ontario September 22, 2026: Sunny Sunny 62 °F 80 °F 06:38 18:47 16:57 02:55 Waxing Moon (89 %)
September 23, 2026 Ontario September 23, 2026: Sunny Sunny 66 °F 84 °F 06:39 18:46 17:23 03:53 Waxing Moon (95 %)
September 24, 2026 Ontario September 24, 2026: Sunny Sunny 67 °F 85 °F 06:40 18:45 17:48 04:50 Full Moon (99 %)
September 25, 2026 Ontario September 25, 2026: Sunny Sunny 69 °F 88 °F 06:40 18:43 18:12 05:47 Full Moon (100 %)
September 26, 2026 Ontario September 26, 2026: Sunny Sunny 75 °F 90 °F 06:41 18:42 18:37 06:44 Full Moon (99 %)
September 27, 2026 Ontario September 27, 2026: Sunny Sunny 71 °F 85 °F 06:42 18:40 19:04 07:43 Waning Moon (96 %)
September 28, 2026 Ontario September 28, 2026: Sunny Sunny 68 °F 87 °F 06:43 18:39 19:34 08:45 Waning Moon (91 %)
September 29, 2026 Ontario September 29, 2026: Sunny Sunny 81 °F 98 °F 06:43 18:38 20:09 09:49 Waning Moon (84 %)
September 30, 2026 Ontario September 30, 2026: Overcast Overcast 84 °F 99 °F 06:44 18:36 20:51 10:55 Waning Moon (75 %)
October 1, 2026 Ontario October 1, 2026: Overcast Overcast 72 °F 86 °F 06:45 18:35 21:41 12:01 Last Quarter (66 %)
October 2, 2026 Ontario October 2, 2026: Sunny Sunny 69 °F 82 °F 06:45 18:33 22:41 13:04 Last Quarter (55 %)
October 3, 2026 Ontario October 3, 2026: Sunny Sunny 73 °F 89 °F 06:46 18:32 23:48 14:01 Last Quarter (45 %)