Fairfield Weather Forecast 15 Days, Weather in Fairfield Today
Current weather conditions and 15 day weather forecast for Fairfield, 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 Fairfield
| 29 July 2025 Tuesday 32.5 ° C / 90.5°F  Sunny |
Feels Like : 38 ° C / 100.5°F Humidity : % 64 Pressure : 1019 mb Wind Speed : 10.8 kmph / 6.7 miles from NE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Fairfield, IL, USA
Weather Forecast for next 15 Days for Fairfield 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 Fairfield, Illinois state, US. To see the daily forecast, scroll to the table below.
| Date | |
|---|---|
| 29 July 2025 Tuesday | |
| Weather forecast |  Partly Cloudy |
| Low temperature | 23.4 ° C (74.1°F) |
| High temperature | 35.3 ° C (95.5°F) |
| Avg. temperature | 28.5 ° C (83.3°F) |
| Humidity | % 84 |
| Chance of rain | 0% |
| UV Index | 2.6 |
| Sun Position | Sunrise:05:54 AM Sunset: 08:06 PM |
| Moon Position | Moonrise:10:51 AM Moonset: 10:39 PM Moon Phase ( Waxing Crescent ) |
| 30 July 2025 Wednesday | |
| Weather forecast | Partly Cloudy |
| Low temperature | 20.6 ° C (69.1°F) |
| High temperature | 35.1 ° C (95.2°F) |
| Avg. temperature | 27.8 ° C (82.1°F) |
| Humidity | % 80 |
| Chance of rain | 0% |
| UV Index | 2.3 |
| Sun Position | Sunrise:05:54 AM Sunset: 08:05 PM |
| Moon Position | Moonrise:11:51 AM Moonset: 11:00 PM Moon Phase ( Waxing Crescent ) |
| 31 July 2025 Thursday | |
| Weather forecast |  Patchy rain nearby |
| Low temperature | 20.9 ° C (69.6°F) |
| High temperature | 27 ° C (80.6°F) |
| Avg. temperature | 24.2 ° C (75.5°F) |
| Humidity | % 89 |
| Chance of rain | 87% |
| UV Index | 1.6 |
| Sun Position | Sunrise:05:55 AM Sunset: 08:04 PM |
| Moon Position | Moonrise:12:51 PM Moonset: 11:24 PM Moon Phase ( Waxing Crescent ) |
| 01 August 2025 Friday | |
| Weather forecast |  Overcast |
| Low temperature | 17.6 ° C (63.7°F) |
| High temperature | 24.9 ° C (76.8°F) |
| Avg. temperature | 21.5 ° C (70.7°F) |
| Humidity | % 75 |
| Chance of rain | 0% |
| UV Index | 2.3 |
| Sun Position | Sunrise:05:56 AM Sunset: 08:03 PM |
| Moon Position | Moonrise:01:52 PM Moonset: 11:52 PM Moon Phase ( First Quarter ) |
| 02 August 2025 Saturday | |
| Weather forecast | Sunny |
| Low temperature | 13.4 ° C (56.1°F) |
| High temperature | 24.9 ° C (76.8°F) |
| Avg. temperature | 19.1 ° C (66.4°F) |
| Humidity | % 75 |
| Chance of rain | 0% |
| UV Index | 0 |
| Sun Position | Sunrise:05:57 AM Sunset: 08:02 PM |
| Moon Position | Moonrise:02:54 PM Moonset: No moonset Moon Phase ( Waxing Gibbous ) |
| 03 August 2025 Sunday | |
| Weather forecast | Sunny |
| Low temperature | 14.5 ° C (58.1°F) |
| High temperature | 26.5 ° C (79.8°F) |
| Avg. temperature | 19.8 ° C (67.6°F) |
| Humidity | % 76 |
| Chance of rain | 0% |
| UV Index | 5 |
| Sun Position | Sunrise:05:58 AM Sunset: 08:01 PM |
| Moon Position | Moonrise:03:56 PM Moonset: 12:23 AM Moon Phase ( Waxing Gibbous ) |
| 04 August 2025 Monday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 17.9 ° C (64.2°F) |
| High temperature | 29.6 ° C (85.2°F) |
| Avg. temperature | 23.3 ° C (74°F) |
| Humidity | % 80 |
| Chance of rain | 74% |
| UV Index | 5 |
| Sun Position | Sunrise:05:59 AM Sunset: 08:00 PM |
| Moon Position | Moonrise:04:56 PM Moonset: 01:03 AM Moon Phase ( Waxing Gibbous ) |
| 05 August 2025 Tuesday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 20.2 ° C (68.4°F) |
| High temperature | 29.1 ° C (84.4°F) |
| Avg. temperature | 24 ° C (75.1°F) |
| Humidity | % 86 |
| Chance of rain | 84% |
| UV Index | 5 |
| Sun Position | Sunrise:06:00 AM Sunset: 07:59 PM |
| Moon Position | Moonrise:05:51 PM Moonset: 01:51 AM Moon Phase ( Waxing Gibbous ) |
| 06 August 2025 Wednesday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 21 ° C (69.8°F) |
| High temperature | 32.1 ° C (89.8°F) |
| Avg. temperature | 25.4 ° C (77.7°F) |
| Humidity | % 82 |
| Chance of rain | 88% |
| UV Index | 6 |
| Sun Position | Sunrise:06:00 AM Sunset: 07:58 PM |
| Moon Position | Moonrise:06:39 PM Moonset: 02:47 AM Moon Phase ( Waxing Gibbous ) |
| 07 August 2025 Thursday | |
| Weather forecast | Partly Cloudy |
| Low temperature | 19.3 ° C (66.8°F) |
| High temperature | 29.7 ° C (85.4°F) |
| Avg. temperature | 23.8 ° C (74.9°F) |
| Humidity | % 84 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:01 AM Sunset: 07:57 PM |
| Moon Position | Moonrise:07:21 PM Moonset: 03:51 AM Moon Phase ( Waxing Gibbous ) |
| 08 August 2025 Friday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 21.4 ° C (70.6°F) |
| High temperature | 31.3 ° C (88.3°F) |
| Avg. temperature | 26.1 ° C (78.9°F) |
| Humidity | % 83 |
| Chance of rain | 76% |
| UV Index | 6 |
| Sun Position | Sunrise:06:02 AM Sunset: 07:56 PM |
| Moon Position | Moonrise:07:55 PM Moonset: 04:59 AM Moon Phase ( Waxing Gibbous ) |
| 09 August 2025 Saturday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 23.4 ° C (74.2°F) |
| High temperature | 32.8 ° C (91°F) |
| Avg. temperature | 27.1 ° C (80.8°F) |
| Humidity | % 81 |
| Chance of rain | 82% |
| UV Index | 6 |
| Sun Position | Sunrise:06:03 AM Sunset: 07:54 PM |
| Moon Position | Moonrise:08:25 PM Moonset: 06:10 AM Moon Phase ( Full Moon ) |
| 10 August 2025 Sunday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 23.4 ° C (74.1°F) |
| High temperature | 32.4 ° C (90.3°F) |
| Avg. temperature | 27.5 ° C (81.5°F) |
| Humidity | % 73 |
| Chance of rain | 89% |
| UV Index | 6 |
| Sun Position | Sunrise:06:04 AM Sunset: 07:53 PM |
| Moon Position | Moonrise:08:52 PM Moonset: 07:21 AM Moon Phase ( Waning Gibbous ) |
| 11 August 2025 Monday | |
| Weather forecast |  Moderate rain |
| Low temperature | 21.7 ° C (71.1°F) |
| High temperature | 29.8 ° C (85.6°F) |
| Avg. temperature | 25 ° C (76.9°F) |
| Humidity | % 88 |
| Chance of rain | 85% |
| UV Index | 5 |
| Sun Position | Sunrise:06:05 AM Sunset: 07:52 PM |
| Moon Position | Moonrise:09:17 PM Moonset: 08:31 AM Moon Phase ( Waning Gibbous ) |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 29 July 2025 Tuesday | Partly Cloudy |
23.4 ° C (74.1°F) |
35.3 ° C (95.5°F) |
28.5 ° C (83.3°F) |
% 84 | 0% | 2.6 | Sunrise:05:54 AM Sunset: 08:06 PM |
Moonrise:10:51 AM Moonset: 10:39 PM Moon Phase ( Waxing Crescent ) |
|
| 30 July 2025 Wednesday | Partly Cloudy |
20.6 ° C (69.1°F) |
35.1 ° C (95.2°F) |
27.8 ° C (82.1°F) |
% 80 | 0% | 2.3 | Sunrise:05:54 AM Sunset: 08:05 PM |
Moonrise:11:51 AM Moonset: 11:00 PM Moon Phase ( Waxing Crescent ) |
|
| 31 July 2025 Thursday | Patchy rain nearby |
20.9 ° C (69.6°F) |
27 ° C (80.6°F) |
24.2 ° C (75.5°F) |
% 89 | 87% | 1.6 | Sunrise:05:55 AM Sunset: 08:04 PM |
Moonrise:12:51 PM Moonset: 11:24 PM Moon Phase ( Waxing Crescent ) |
|
| 01 August 2025 Friday | Overcast |
17.6 ° C (63.7°F) |
24.9 ° C (76.8°F) |
21.5 ° C (70.7°F) |
% 75 | 0% | 2.3 | Sunrise:05:56 AM Sunset: 08:03 PM |
Moonrise:01:52 PM Moonset: 11:52 PM Moon Phase ( First Quarter ) |
|
| 02 August 2025 Saturday | Sunny |
13.4 ° C (56.1°F) |
24.9 ° C (76.8°F) |
19.1 ° C (66.4°F) |
% 75 | 0% | 0 | Sunrise:05:57 AM Sunset: 08:02 PM |
Moonrise:02:54 PM Moonset: No moonset Moon Phase ( Waxing Gibbous ) |
|
| 03 August 2025 Sunday | Sunny |
14.5 ° C (58.1°F) |
26.5 ° C (79.8°F) |
19.8 ° C (67.6°F) |
% 76 | 0% | 5 | Sunrise:05:58 AM Sunset: 08:01 PM |
Moonrise:03:56 PM Moonset: 12:23 AM Moon Phase ( Waxing Gibbous ) |
|
| 04 August 2025 Monday | Patchy rain nearby |
17.9 ° C (64.2°F) |
29.6 ° C (85.2°F) |
23.3 ° C (74°F) |
% 80 | 74% | 5 | Sunrise:05:59 AM Sunset: 08:00 PM |
Moonrise:04:56 PM Moonset: 01:03 AM Moon Phase ( Waxing Gibbous ) |
|
| 05 August 2025 Tuesday | Patchy rain nearby |
20.2 ° C (68.4°F) |
29.1 ° C (84.4°F) |
24 ° C (75.1°F) |
% 86 | 84% | 5 | Sunrise:06:00 AM Sunset: 07:59 PM |
Moonrise:05:51 PM Moonset: 01:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 06 August 2025 Wednesday | Patchy rain nearby |
21 ° C (69.8°F) |
32.1 ° C (89.8°F) |
25.4 ° C (77.7°F) |
% 82 | 88% | 6 | Sunrise:06:00 AM Sunset: 07:58 PM |
Moonrise:06:39 PM Moonset: 02:47 AM Moon Phase ( Waxing Gibbous ) |
|
| 07 August 2025 Thursday | Partly Cloudy |
19.3 ° C (66.8°F) |
29.7 ° C (85.4°F) |
23.8 ° C (74.9°F) |
% 84 | 0% | 6 | Sunrise:06:01 AM Sunset: 07:57 PM |
Moonrise:07:21 PM Moonset: 03:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 08 August 2025 Friday | Patchy rain nearby |
21.4 ° C (70.6°F) |
31.3 ° C (88.3°F) |
26.1 ° C (78.9°F) |
% 83 | 76% | 6 | Sunrise:06:02 AM Sunset: 07:56 PM |
Moonrise:07:55 PM Moonset: 04:59 AM Moon Phase ( Waxing Gibbous ) |
|
| 09 August 2025 Saturday | Patchy rain nearby |
23.4 ° C (74.2°F) |
32.8 ° C (91°F) |
27.1 ° C (80.8°F) |
% 81 | 82% | 6 | Sunrise:06:03 AM Sunset: 07:54 PM |
Moonrise:08:25 PM Moonset: 06:10 AM Moon Phase ( Full Moon ) |
|
| 10 August 2025 Sunday | Patchy rain nearby |
23.4 ° C (74.1°F) |
32.4 ° C (90.3°F) |
27.5 ° C (81.5°F) |
% 73 | 89% | 6 | Sunrise:06:04 AM Sunset: 07:53 PM |
Moonrise:08:52 PM Moonset: 07:21 AM Moon Phase ( Waning Gibbous ) |
|
| 11 August 2025 Monday | Moderate rain |
21.7 ° C (71.1°F) |
29.8 ° C (85.6°F) |
25 ° C (76.9°F) |
% 88 | 85% | 5 | Sunrise:06:05 AM Sunset: 07:52 PM |
Moonrise:09:17 PM Moonset: 08:31 AM Moon Phase ( Waning Gibbous ) |
|
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