Ontario International Airport Weather Forecast 15 Days, Weather in ONT Today
Current weather conditions and 15 day weather forecast for Ontario International Airport, California, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Ontario International Airport
| 19 December 2025 Friday 18.3 ° C / 64.9°F  Sunny |
Feels Like : 18.3 ° C / 64.9°F Humidity : % 39 Pressure : 1018 mb Wind Speed : 3.6 kmph / 2.2 miles from E  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Ontario International Airport, CA, USA
Weather Forecast for next 15 Days for Ontario International Airport including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Ontario International Airport, California state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 19 December 2025 Friday | Sunny |
13.9 ° C (57°F) |
28.2 ° C (82.8°F) |
18.6 ° C (65.5°F) |
% 44 | 0% | 0.6 | Sunrise:06:51 AM Sunset: 04:44 PM |
Moonrise:06:51 AM Moonset: 04:19 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
13.9 ° C (57°F) |
22.4 ° C (72.3°F) |
17.2 ° C (63°F) |
% 54 | 0% | 0.6 | Sunrise:06:52 AM Sunset: 04:45 PM |
Moonrise:07:42 AM Moonset: 05:15 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Sunny |
13.5 ° C (56.3°F) |
22.4 ° C (72.3°F) |
17 ° C (62.7°F) |
% 52 | 0% | 0.6 | Sunrise:06:52 AM Sunset: 04:45 PM |
Moonrise:08:28 AM Moonset: 06:14 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Sunny |
13.3 ° C (56°F) |
22.8 ° C (73°F) |
16.8 ° C (62.3°F) |
% 45 | 0% | 0.6 | Sunrise:06:53 AM Sunset: 04:46 PM |
Moonrise:09:07 AM Moonset: 07:16 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Patchy rain nearby |
12.7 ° C (54.9°F) |
19.4 ° C (66.8°F) |
14.8 ° C (58.6°F) |
% 60 | 78% | 0 | Sunrise:06:53 AM Sunset: 04:46 PM |
Moonrise:09:42 AM Moonset: 08:18 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Moderate rain |
12 ° C (53.7°F) |
14.5 ° C (58.1°F) |
13.6 ° C (56.5°F) |
% 84 | 84% | 3 | Sunrise:06:54 AM Sunset: 04:47 PM |
Moonrise:10:12 AM Moonset: 09:21 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Patchy rain nearby |
11.1 ° C (51.9°F) |
17.1 ° C (62.7°F) |
13.2 ° C (55.7°F) |
% 76 | 88% | 3 | Sunrise:06:54 AM Sunset: 04:48 PM |
Moonrise:10:39 AM Moonset: 10:22 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Moderate rain |
9.9 ° C (49.8°F) |
12.6 ° C (54.7°F) |
11.5 ° C (52.7°F) |
% 83 | 84% | 3 | Sunrise:06:55 AM Sunset: 04:48 PM |
Moonrise:11:06 AM Moonset: 11:26 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Moderate rain |
8.2 ° C (46.7°F) |
9.5 ° C (49.1°F) |
9 ° C (48.1°F) |
% 83 | 86% | 2 | Sunrise:06:55 AM Sunset: 04:49 PM |
Moonrise:11:33 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Partly Cloudy |
8.1 ° C (46.6°F) |
13.8 ° C (56.8°F) |
10.8 ° C (51.4°F) |
% 67 | 0% | 4 | Sunrise:06:55 AM Sunset: 04:50 PM |
Moonrise:12:02 PM Moonset: 12:30 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
9.2 ° C (48.6°F) |
13.6 ° C (56.4°F) |
11.4 ° C (52.5°F) |
% 74 | 87% | 3 | Sunrise:06:56 AM Sunset: 04:50 PM |
Moonrise:12:35 PM Moonset: 01:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Patchy rain nearby |
9.9 ° C (49.9°F) |
13.8 ° C (56.9°F) |
11.5 ° C (52.8°F) |
% 77 | 86% | 3 | Sunrise:06:56 AM Sunset: 04:51 PM |
Moonrise:01:14 PM Moonset: 02:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Moderate rain |
9.4 ° C (48.9°F) |
11.3 ° C (52.3°F) |
10.4 ° C (50.7°F) |
% 76 | 84% | 3 | Sunrise:06:56 AM Sunset: 04:52 PM |
Moonrise:02:02 PM Moonset: 04:06 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Sunny |
8.4 ° C (47.2°F) |
15.5 ° C (59.9°F) |
11.1 ° C (52°F) |
% 26 | 0% | 4 | Sunrise:06:56 AM Sunset: 04:52 PM |
Moonrise:03:00 PM Moonset: 05:21 AM Moon Phase ( Waxing Gibbous ) |
|
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