Monticello Weather Forecast 15 Days, Weather in Monticello Today
Current weather conditions and 15 day weather forecast for Monticello, 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 Monticello
| 14 June 2026 Sunday 19.4 ° C / 66.9°F  Partly cloudy |
Feels Like : 19.4 ° C / 66.9°F Humidity : % 100 Pressure : 1010 mb Wind Speed : 27.4 kmph / 17 miles from NNW  Visibility : 13 km Precipitation (rainfall) : 0 mm Cloud (%) : 50 |
15 day weather forecast for Monticello, IL, USA
Weather Forecast for next 15 Days for Monticello 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 Monticello, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 June 2026 Sunday |  Patchy rain nearby |
13.8 ° C (56.8°F) |
23.2 ° C (73.8°F) |
19.4 ° C (67°F) |
% 78 | 36% | 9.8 | Sunrise:05:24 AM Sunset: 08:24 PM |
Moonrise:04:11 AM Moonset: 08:17 PM Moon Phase ( New Moon ) |
|
| 15 June 2026 Monday | Patchy rain nearby |
12.5 ° C (54.4°F) |
23.5 ° C (74.3°F) |
17.7 ° C (63.9°F) |
% 69 | 57% | 8.6 | Sunrise:05:24 AM Sunset: 08:24 PM |
Moonrise:05:11 AM Moonset: 09:22 PM Moon Phase ( New Moon ) |
|
| 16 June 2026 Tuesday |  Moderate rain |
13.1 ° C (55.6°F) |
24.1 ° C (75.3°F) |
18.5 ° C (65.3°F) |
% 77 | 76% | 5.8 | Sunrise:05:24 AM Sunset: 08:25 PM |
Moonrise:06:22 AM Moonset: 10:16 PM Moon Phase ( Waxing Crescent ) |
|
| 17 June 2026 Wednesday |  Heavy rain |
17 ° C (62.6°F) |
25.5 ° C (78°F) |
20.9 ° C (69.5°F) |
% 90 | 88% | 7.4 | Sunrise:05:24 AM Sunset: 08:25 PM |
Moonrise:07:41 AM Moonset: 10:58 PM Moon Phase ( Waxing Crescent ) |
|
| 18 June 2026 Thursday | Patchy rain nearby |
17.7 ° C (63.8°F) |
24.4 ° C (76°F) |
21 ° C (69.8°F) |
% 86 | 44% | 0.2 | Sunrise:05:25 AM Sunset: 08:25 PM |
Moonrise:09:01 AM Moonset: 11:32 PM Moon Phase ( Waxing Crescent ) |
|
| 19 June 2026 Friday |  Sunny |
14.3 ° C (57.8°F) |
22.2 ° C (72°F) |
18.2 ° C (64.7°F) |
% 78 | 9% | 5 | Sunrise:05:25 AM Sunset: 08:26 PM |
Moonrise:10:19 AM Moonset: Does not set today Moon Phase ( Waxing Crescent ) |
|
| 20 June 2026 Saturday | Sunny |
13.1 ° C (55.7°F) |
25 ° C (76.9°F) |
19.2 ° C (66.5°F) |
% 75 | 8% | 5 | Sunrise:05:25 AM Sunset: 08:26 PM |
Moonrise:11:32 AM Moonset: 12:00 AM Moon Phase ( First Quarter ) |
|
| 21 June 2026 Sunday | Patchy rain nearby |
16.7 ° C (62°F) |
27.2 ° C (80.9°F) |
22 ° C (71.7°F) |
% 82 | 59% | 5 | Sunrise:05:25 AM Sunset: 08:26 PM |
Moonrise:12:43 PM Moonset: 12:24 AM Moon Phase ( First Quarter ) |
|
| 22 June 2026 Monday | Sunny |
15.1 ° C (59.2°F) |
23.5 ° C (74.2°F) |
19.1 ° C (66.3°F) |
% 78 | 10% | 5 | Sunrise:05:25 AM Sunset: 08:26 PM |
Moonrise:01:51 PM Moonset: 12:48 AM Moon Phase ( First Quarter ) |
|
| 23 June 2026 Tuesday | Partly Cloudy |
13.8 ° C (56.8°F) |
26.1 ° C (79.1°F) |
20.2 ° C (68.4°F) |
% 79 | 12% | 6 | Sunrise:05:26 AM Sunset: 08:27 PM |
Moonrise:02:59 PM Moonset: 01:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 June 2026 Wednesday |  Overcast |
18.5 ° C (65.3°F) |
26.4 ° C (79.6°F) |
22.8 ° C (73°F) |
% 84 | 23% | 5 | Sunrise:05:26 AM Sunset: 08:27 PM |
Moonrise:04:07 PM Moonset: 01:36 AM Moon Phase ( Waxing Gibbous ) |
|
| 25 June 2026 Thursday | Patchy rain nearby |
19.5 ° C (67.1°F) |
25.3 ° C (77.6°F) |
22 ° C (71.7°F) |
% 87 | 35% | 5 | Sunrise:05:26 AM Sunset: 08:27 PM |
Moonrise:05:14 PM Moonset: 02:05 AM Moon Phase ( Waxing Gibbous ) |
|
| 26 June 2026 Friday | Sunny |
14.8 ° C (58.6°F) |
23.4 ° C (74.1°F) |
18.7 ° C (65.7°F) |
% 81 | 14% | 5 | Sunrise:05:27 AM Sunset: 08:27 PM |
Moonrise:06:19 PM Moonset: 02:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 June 2026 Saturday | Sunny |
10.4 ° C (50.8°F) |
21.6 ° C (70.9°F) |
16.2 ° C (61.2°F) |
% 71 | 6% | 5 | Sunrise:05:27 AM Sunset: 08:27 PM |
Moonrise:07:19 PM Moonset: 03:18 AM Moon Phase ( Full Moon ) |
|
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