Ottawa Weather Forecast 15 Days, Weather in Ottawa Today
Current weather conditions and 15 day weather forecast for Ottawa, Illinois, 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 Ottawa
| 27 June 2026 Saturday 19.3 ° C / 66.7°F  Overcast |
Feels Like : 19.3 ° C / 66.7°F Humidity : % 73 Pressure : 1017 mb Wind Speed : 16.9 kmph / 10.5 miles from ENE  Visibility : 16 km Precipitation (rainfall) : 0.01 mm Cloud (%) : 100 |
15 day weather forecast for Ottawa, IL, USA
Weather Forecast for next 15 Days for Ottawa 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 Ottawa, Illinois 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26 June 2026 Friday |  Patchy rain nearby |
17.4 ° C (63.3°F) |
22.3 ° C (72.1°F) |
19.2 ° C (66.5°F) |
% 79 | 57% | 1.7 | Sunrise:05:23 AM Sunset: 08:32 PM |
Moonrise:06:25 PM Moonset: 02:35 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 June 2026 Saturday | Patchy rain nearby |
17.1 ° C (62.8°F) |
24.4 ° C (75.9°F) |
20.4 ° C (68.8°F) |
% 87 | 57% | 4.8 | Sunrise:05:24 AM Sunset: 08:32 PM |
Moonrise:07:26 PM Moonset: 03:14 AM Moon Phase ( Full Moon ) |
|
| 28 June 2026 Sunday | Patchy rain nearby |
18.3 ° C (64.9°F) |
30.6 ° C (87°F) |
24.3 ° C (75.7°F) |
% 89 | 67% | 9.6 | Sunrise:05:24 AM Sunset: 08:32 PM |
Moonrise:08:20 PM Moonset: 04:01 AM Moon Phase ( Full Moon ) |
|
| 29 June 2026 Monday |  Sunny |
22.4 ° C (72.4°F) |
32 ° C (89.7°F) |
27 ° C (80.5°F) |
% 85 | 12% | 10.2 | Sunrise:05:24 AM Sunset: 08:32 PM |
Moonrise:09:05 PM Moonset: 04:55 AM Moon Phase ( Full Moon ) |
|
| 30 June 2026 Tuesday | Sunny |
23.2 ° C (73.8°F) |
32.4 ° C (90.3°F) |
27.5 ° C (81.5°F) |
% 83 | 10% | 10.2 | Sunrise:05:25 AM Sunset: 08:32 PM |
Moonrise:09:42 PM Moonset: 05:55 AM Moon Phase ( Full Moon ) |
|
| 01 July 2026 Wednesday | Sunny |
22.7 ° C (72.9°F) |
32.4 ° C (90.4°F) |
26.7 ° C (80°F) |
% 82 | 10% | 0.6 | Sunrise:05:25 AM Sunset: 08:32 PM |
Moonrise:10:12 PM Moonset: 06:58 AM Moon Phase ( Waning Gibbous ) |
|
| 02 July 2026 Thursday | Patchy rain nearby |
24.2 ° C (75.6°F) |
32 ° C (89.6°F) |
27.5 ° C (81.6°F) |
% 81 | 40% | 6 | Sunrise:05:26 AM Sunset: 08:32 PM |
Moonrise:10:37 PM Moonset: 08:01 AM Moon Phase ( Waning Gibbous ) |
|
| 03 July 2026 Friday | Patchy rain nearby |
23 ° C (73.4°F) |
31.5 ° C (88.7°F) |
26.9 ° C (80.5°F) |
% 83 | 59% | 6 | Sunrise:05:27 AM Sunset: 08:32 PM |
Moonrise:10:59 PM Moonset: 09:04 AM Moon Phase ( Waning Gibbous ) |
|
| 04 July 2026 Saturday |  Moderate rain |
21 ° C (69.8°F) |
28.2 ° C (82.7°F) |
24 ° C (75.3°F) |
% 89 | 79% | 5 | Sunrise:05:27 AM Sunset: 08:32 PM |
Moonrise:11:19 PM Moonset: 10:05 AM Moon Phase ( Waning Gibbous ) |
|
| 05 July 2026 Sunday | Sunny |
18.2 ° C (64.7°F) |
28.6 ° C (83.4°F) |
23.1 ° C (73.6°F) |
% 79 | 11% | 6 | Sunrise:05:28 AM Sunset: 08:31 PM |
Moonrise:11:38 PM Moonset: 11:06 AM Moon Phase ( Last Quarter ) |
|
| 06 July 2026 Monday |  Partly Cloudy |
18 ° C (64.3°F) |
29.3 ° C (84.7°F) |
23.6 ° C (74.5°F) |
% 76 | 11% | 6 | Sunrise:05:28 AM Sunset: 08:31 PM |
Moonrise:11:57 PM Moonset: 12:08 PM Moon Phase ( Last Quarter ) |
|
| 07 July 2026 Tuesday | Patchy rain nearby |
20.2 ° C (68.4°F) |
29.5 ° C (85.1°F) |
24.4 ° C (75.9°F) |
% 82 | 48% | 5 | Sunrise:05:29 AM Sunset: 08:31 PM |
Moonrise:Does not rise today Moonset: 01:12 PM Moon Phase ( Last Quarter ) |
|
| 08 July 2026 Wednesday | Patchy rain nearby |
17.9 ° C (64.2°F) |
25.8 ° C (78.4°F) |
21.7 ° C (71°F) |
% 84 | 49% | 5 | Sunrise:05:30 AM Sunset: 08:30 PM |
Moonrise:12:19 AM Moonset: 02:19 PM Moon Phase ( Waning Crescent ) |
|
| 09 July 2026 Thursday | Patchy rain nearby |
15.5 ° C (59.9°F) |
24.7 ° C (76.4°F) |
19.4 ° C (66.9°F) |
% 85 | 57% | 4 | Sunrise:05:30 AM Sunset: 08:30 PM |
Moonrise:12:44 AM Moonset: 03:30 PM Moon Phase ( Waning Crescent ) |
|
Add a link to your web page; copy and paste this html to your web page