Weather / Illinois Weather Temperature |
Weather in Freeport, Illinois
Current Conditions (Monday, December 23, 2024 at 10:55 America/Chicago time)
Temperature: 37°F (3°C) |
Forecast Overview
Tue Dec 24 36°F 30°F 2°C -1°C Overcast skies.
detailsWed Dec 25 34°F 27°F 1°C -3°C Overcast skies.
detailsThu Dec 26 36°F 27°F 2°C -3°C Chance of light rain at various times.
detailsFri Dec 27 43°F 36°F 6°C 2°C Chance of light rain at various times.
detailsSat Dec 28 52°F 43°F 11°C 6°C Chance of heavy rain at various times.
detailsSun Dec 29 54°F 48°F 12°C 9°C Chance of rain before sunrise and in the afternoon.
detailsMon Dec 30 52°F 41°F 11°C 5°C Mostly cloudy skies.
detailsTue Dec 31 48°F 39°F 9°C 4°C Overcast skies.
detailsWed Jan 1 46°F 34°F 8°C 1°C Chance of light rain at various times.
detailsThu Jan 2 39°F 34°F 4°C 1°C Mostly cloudy skies.
detailsFri Jan 3 37°F 32°F 3°C 0°C Chance of rain after 3 pm. Chance of snow in the afternoon.
detailsSat Jan 4 52°F 37°F 11°C 3°C Chance of heavy rain all day.
detailsSun Jan 5 39°F 27°F 4°C -3°C Chance of light snow almost all day.
detailsMon Jan 6 28°F 21°F -2°C -6°C Chance of light snow before sunrise.
details
Detailed Forecast
Tuesday, December 24 | sunrise: 07:25 sunset: 16:30 |
Low around 30°F (-1°C), high around 35°F (2°C). Overcast skies. Wind: 14 mph (23 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. | 32°F (-0°C) | 14 mph (23 km/h) | 79% | 0.283% | |
03:00 06:00 | Mostly cloudy. | 31°F (-0°C) | 13 mph (21 km/h) | 84% | 0.284% | |
06:00 09:00 | Overcast. | 34°F (1°C) | 11 mph (18 km/h) | 87% | 0.285% | |
09:00 12:00 | Overcast. | 35°F (1°C) | 9 mph (14 km/h) | 93% | 0.29% | |
12:00 15:00 | Overcast. | 35°F (2°C) | 5 mph (9 km/h) | 100% | 0.297% | |
15:00 18:00 | Overcast. | 34°F (1°C) | 5 mph (8 km/h) | 99% | 0.301% | |
18:00 21:00 | Overcast. | 33°F (1°C) | 6 mph (9 km/h) | 97% | 0.302% | |
21:00 00:00 | Overcast. | 32°F (-0°C) | 6 mph (9 km/h) | 98% | 0.302% |
Wednesday, December 25 | sunrise: 07:25 sunset: 16:31 |
Low around 26°F (-3°C), high around 35°F (1°C). Overcast skies. Wind: 8 mph (12 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. | 30°F (-1°C) | 8 mph (12 km/h) | 95% | 0.302% | |
03:00 06:00 | Mostly cloudy. | 26°F (-3°C) | 8 mph (12 km/h) | 95% | 0.301% | |
06:00 09:00 | Overcast. | 30°F (-1°C) | 6 mph (10 km/h) | 90% | 0.301% | |
09:00 12:00 | Overcast. | 34°F (1°C) | 6 mph (9 km/h) | 85% | 0.306% | |
12:00 15:00 | Overcast. | 34°F (1°C) | 5 mph (8 km/h) | 91% | 0.313% | |
15:00 18:00 | Overcast. | 32°F (0°C) | 6 mph (9 km/h) | 94% | 0.312% | |
18:00 21:00 | Overcast. | 31°F (-0°C) | 7 mph (12 km/h) | 94% | 0.312% | |
21:00 00:00 | Overcast. | 29°F (-1°C) | 6 mph (10 km/h) | 93% | 0.311% |
Thursday, December 26 | sunrise: 07:25 sunset: 16:32 |
Low around 27°F (-3°C), high around 36°F (2°C). Chance of light rain in the morning (between 9 am and 12 pm) and in the evening (after 6 pm). Estimated precipitation: 0.05 in (1.1875 mm). Mostly cloudy skies. Wind: 7 mph (12 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. | 27°F (-3°C) | 5 mph (9 km/h) | 96% | 0.31% | |
03:00 06:00 | Clear. | 27°F (-3°C) | 6 mph (9 km/h) | 96% | 0.31% | |
06:00 09:00 | Overcast. | 31°F (-0°C) | 7 mph (11 km/h) | 92% | 0.31% | |
09:00 12:00 | Chance of light rain. Precipitation: 0 in (0.0625 mm). | 33°F (1°C) | 7 mph (12 km/h) | 96% | 0.311% | |
12:00 15:00 | Overcast. Precipitation: 0 in (0.0625 mm). | 34°F (1°C) | 7 mph (11 km/h) | 99% | 0.313% | |
15:00 18:00 | Overcast. Precipitation: 0 in (0.0625 mm). | 34°F (1°C) | 7 mph (12 km/h) | 99% | 0.315% | |
18:00 21:00 | Chance of light rain. Precipitation: 0 in (0.0625 mm). | 35°F (2°C) | 7 mph (11 km/h) | 100% | 0.319% | |
21:00 00:00 | Chance of light rain. Precipitation: 0.04 in (0.9375 mm). | 36°F (2°C) | 7 mph (12 km/h) | 100% | 0.331% |
Friday, December 27 | sunrise: 07:26 sunset: 16:32 |
Low around 36°F (2°C), high around 42°F (6°C). Chance of light rain at night (before 3 am), in the morning and early afternoon (between 9 am and 3 pm). Estimated precipitation: 0.06 in (1.4375 mm). Overcast skies. Wind: 8 mph (13 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Chance of light rain. Precipitation: 0.02 in (0.5 mm). | 36°F (2°C) | 7 mph (11 km/h) | 100% | 0.337% | |
03:00 06:00 | Overcast. Precipitation: 0 in (0.125 mm). | 37°F (3°C) | 7 mph (11 km/h) | 98% | 0.339% | |
06:00 09:00 | Overcast. | 38°F (4°C) | 8 mph (13 km/h) | 96% | 0.34% | |
09:00 12:00 | Chance of light rain. Precipitation: 0.01 in (0.1875 mm). | 39°F (4°C) | 7 mph (11 km/h) | 95% | 0.338% | |
12:00 15:00 | Chance of light rain. Precipitation: 0.01 in (0.3125 mm). | 40°F (4°C) | 7 mph (11 km/h) | 96% | 0.335% | |
15:00 18:00 | Overcast. Precipitation: 0.01 in (0.3125 mm). | 40°F (5°C) | 7 mph (11 km/h) | 98% | 0.334% | |
18:00 21:00 | Overcast. | 41°F (5°C) | 6 mph (10 km/h) | 97% | 0.329% | |
21:00 00:00 | Overcast. | 42°F (6°C) | 7 mph (12 km/h) | 97% | 0.322% |
Saturday, December 28 | sunrise: 07:26 sunset: 16:33 |
Low around 42°F (6°C), high around 51°F (11°C). Chance of heavy rain all morning (between 3 am and 12 pm) and again in the evening (after 6 pm). Estimated precipitation: 0.55 in (13.875 mm). Overcast skies. Wind: 17 mph (27 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. | 44°F (7°C) | 9 mph (15 km/h) | 96% | 0.311% | |
03:00 06:00 | Chance of light rain. Precipitation: 0.01 in (0.1875 mm). | 44°F (7°C) | 12 mph (19 km/h) | 94% | 0.296% | |
06:00 09:00 | Chance of light rain. Precipitation: 0.03 in (0.875 mm). | 45°F (7°C) | 17 mph (27 km/h) | 92% | 0.294% | |
09:00 12:00 | Chance of heavy rain. Precipitation: 0.47 in (12.0625 mm). | 45°F (7°C) | 13 mph (21 km/h) | 97% | 0.347% | |
12:00 15:00 | Overcast. Precipitation: 0.01 in (0.1875 mm). | 48°F (9°C) | 14 mph (22 km/h) | 97% | 0.313% | |
15:00 18:00 | Overcast. Precipitation: 0 in (0.0625 mm). | 50°F (10°C) | 12 mph (20 km/h) | 96% | 0.304% | |
18:00 21:00 | Chance of light rain. Precipitation: 0.01 in (0.3125 mm). | 49°F (10°C) | 12 mph (20 km/h) | 96% | 0.3% | |
21:00 00:00 | Chance of light rain. Precipitation: 0.01 in (0.1875 mm). | 51°F (11°C) | 12 mph (19 km/h) | 94% | 0.297% |
Sunday, December 29 | sunrise: 07:26 sunset: 16:34 |
Low around 48°F (9°C), high around 54°F (12°C). Chance of rain before sunrise (between 3 am and 6 am) and early in the afternoon (between 12 pm and 3 pm). The precipitation may fall as scattered showers of varying intensity. Estimated precipitation: 0.17 in (4.25 mm). Overcast skies. Wind: 12 mph (20 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. Precipitation: 0 in (0.0625 mm). | 51°F (11°C) | 11 mph (18 km/h) | 97% | 0.295% | |
03:00 06:00 | Chance of rain. Precipitation: 0.07 in (1.75 mm). | 51°F (11°C) | 12 mph (20 km/h) | 97% | 0.308% | |
06:00 09:00 | Overcast. Precipitation: 0.01 in (0.3125 mm). | 52°F (11°C) | 12 mph (20 km/h) | 92% | 0.301% | |
09:00 12:00 | Overcast. Precipitation: 0.01 in (0.375 mm). | 53°F (12°C) | 8 mph (13 km/h) | 93% | 0.298% | |
12:00 15:00 | Chance of scattered rain showers. Precipitation: 0.06 in (1.5 mm). | 52°F (11°C) | 6 mph (10 km/h) | 97% | 0.305% | |
15:00 18:00 | Partly cloudy. Precipitation: 0.01 in (0.25 mm). | 51°F (10°C) | 5 mph (8 km/h) | 97% | 0.299% | |
18:00 21:00 | Overcast. | 48°F (9°C) | 4 mph (7 km/h) | 97% | 0.295% | |
21:00 00:00 | Overcast. | 48°F (9°C) | 2 mph (3 km/h) | 98% | 0.292% |
Monday, December 30 | sunrise: 07:26 sunset: 16:34 |
Low around 41°F (5°C), high around 52°F (11°C). Estimated precipitation: 0.01 in (0.3125 mm). Mostly cloudy skies. Wind: 10 mph (16 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. | 47°F (9°C) | 3 mph (4 km/h) | 98% | 0.289% | |
03:00 06:00 | Overcast. | 47°F (8°C) | 5 mph (9 km/h) | 97% | 0.287% | |
06:00 09:00 | Overcast. Precipitation: 0.01 in (0.25 mm). | 46°F (8°C) | 8 mph (13 km/h) | 96% | 0.286% | |
09:00 12:00 | Overcast. Precipitation: 0 in (0.0625 mm). | 50°F (10°C) | 8 mph (13 km/h) | 84% | 0.283% | |
12:00 15:00 | Mostly cloudy. | 52°F (11°C) | 9 mph (15 km/h) | 75% | 0.281% | |
15:00 18:00 | Overcast. | 49°F (9°C) | 10 mph (16 km/h) | 75% | 0.279% | |
18:00 21:00 | Clear. | 46°F (8°C) | 6 mph (9 km/h) | 81% | 0.278% | |
21:00 00:00 | Clear. | 41°F (5°C) | 5 mph (8 km/h) | 93% | 0.277% |
Tuesday, December 31 | sunrise: 07:27 sunset: 16:35 |
Low around 38°F (4°C), high around 48°F (9°C). Overcast skies. Wind: 14 mph (22 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Times of clear skies and clouds. | 39°F (4°C) | 5 mph (8 km/h) | 93% | 0.277% | |
03:00 06:00 | Overcast. | 39°F (4°C) | 5 mph (8 km/h) | 88% | 0.276% | |
06:00 09:00 | Overcast. | 41°F (5°C) | 6 mph (9 km/h) | 80% | 0.275% | |
09:00 12:00 | Overcast. | 47°F (8°C) | 10 mph (16 km/h) | 60% | 0.273% | |
12:00 15:00 | Overcast. | 47°F (9°C) | 9 mph (14 km/h) | 63% | 0.272% | |
15:00 18:00 | Overcast. | 44°F (7°C) | 11 mph (18 km/h) | 74% | 0.271% | |
18:00 21:00 | Overcast. | 45°F (7°C) | 12 mph (19 km/h) | 73% | 0.27% | |
21:00 00:00 | Partly cloudy. | 44°F (6°C) | 14 mph (22 km/h) | 77% | 0.269% |
Wednesday, January 1 | sunrise: 07:27 sunset: 16:36 |
Low around 35°F (1°C), high around 46°F (8°C). Chance of light rain at night (before 3 am), in the morning and early afternoon (between 9 am and 3 pm). Estimated precipitation: 0.1 in (2.4375 mm). Overcast skies. Wind: 21 mph (33 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Chance of light rain. Precipitation: 0.02 in (0.5625 mm). | 44°F (7°C) | 14 mph (22 km/h) | 81% | 0.274% | |
03:00 06:00 | Overcast. Precipitation: 0.01 in (0.1875 mm). | 45°F (7°C) | 16 mph (25 km/h) | 83% | 0.274% | |
06:00 09:00 | Overcast. Precipitation: 0 in (0.0625 mm). | 45°F (7°C) | 15 mph (24 km/h) | 87% | 0.273% | |
09:00 12:00 | Chance of light rain. Precipitation: 0.03 in (0.6875 mm). | 44°F (7°C) | 16 mph (27 km/h) | 88% | 0.275% | |
12:00 15:00 | Chance of light rain. Precipitation: 0.03 in (0.6875 mm). | 44°F (7°C) | 21 mph (33 km/h) | 87% | 0.278% | |
15:00 18:00 | Overcast. Precipitation: 0.01 in (0.25 mm). | 39°F (4°C) | 20 mph (33 km/h) | 75% | 0.277% | |
18:00 21:00 | Overcast. | 36°F (2°C) | 19 mph (31 km/h) | 78% | 0.275% | |
21:00 00:00 | Overcast. | 35°F (1°C) | 18 mph (30 km/h) | 81% | 0.272% |
Thursday, January 2 | sunrise: 07:27 sunset: 16:36 |
Low around 33°F (1°C), high around 40°F (4°C). Estimated precipitation: 0 in (0.0625 mm). Mostly cloudy skies. Wind: 18 mph (29 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. Precipitation: 0 in (0.0625 mm). | 34°F (1°C) | 18 mph (29 km/h) | 85% | 0.271% | |
03:00 06:00 | Overcast. | 34°F (1°C) | 17 mph (27 km/h) | 78% | 0.269% | |
06:00 09:00 | Sunny. | 35°F (1°C) | 15 mph (24 km/h) | 76% | 0.268% | |
09:00 12:00 | Considerable cloudiness. | 38°F (3°C) | 15 mph (24 km/h) | 67% | 0.267% | |
12:00 15:00 | Mostly sunny, with a few passing clouds. | 39°F (4°C) | 13 mph (21 km/h) | 64% | 0.265% | |
15:00 18:00 | Overcast. | 35°F (2°C) | 7 mph (11 km/h) | 76% | 0.265% | |
18:00 21:00 | Overcast. | 33°F (1°C) | 5 mph (9 km/h) | 81% | 0.265% | |
21:00 00:00 | Overcast. | 33°F (1°C) | 4 mph (7 km/h) | 81% | 0.265% |
Friday, January 3 | sunrise: 07:27 sunset: 16:37 |
Low around 33°F (0°C), high around 37°F (3°C). Chance of rain after 3 pm. Chance of snow early in the afternoon (between 12 pm and 3 pm). Estimated precipitation: 0.17 in (4.3125 mm). Overcast skies. Wind: 13 mph (20 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. | 33°F (1°C) | 4 mph (6 km/h) | 82% | 0.265% | |
03:00 06:00 | Overcast. | 33°F (1°C) | 5 mph (7 km/h) | 83% | 0.265% | |
06:00 09:00 | Overcast. | 34°F (1°C) | 5 mph (7 km/h) | 79% | 0.264% | |
09:00 12:00 | Overcast. | 36°F (2°C) | 4 mph (7 km/h) | 78% | 0.264% | |
12:00 15:00 | Chance of light snow. Precipitation: 0 in (0.0625 mm). | 34°F (1°C) | 6 mph (10 km/h) | 93% | 0.264% | |
15:00 18:00 | Chance of light rain. Precipitation: 0.02 in (0.4375 mm). | 35°F (1°C) | 8 mph (13 km/h) | 97% | 0.267% | |
18:00 21:00 | Chance of rain. Precipitation: 0.05 in (1.375 mm). | 35°F (2°C) | 12 mph (19 km/h) | 97% | 0.277% | |
21:00 00:00 | Chance of rain. Precipitation: 0.1 in (2.4375 mm). | 37°F (3°C) | 13 mph (20 km/h) | 96% | 0.293% |
Saturday, January 4 | sunrise: 07:27 sunset: 16:38 |
Low around 37°F (3°C), high around 52°F (11°C). Chance of heavy rain all day (from 3 am to midnight). Estimated precipitation: 1.5 in (38.125 mm). Overcast skies. Wind: 25 mph (40 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Overcast. Precipitation: 0.04 in (0.9375 mm). | 38°F (4°C) | 13 mph (21 km/h) | 90% | 0.29% | |
03:00 06:00 | Chance of rain. Precipitation: 0.09 in (2.375 mm). | 40°F (4°C) | 13 mph (21 km/h) | 95% | 0.302% | |
06:00 09:00 | Chance of rain. Precipitation: 0.16 in (4.125 mm). | 43°F (6°C) | 11 mph (18 km/h) | 98% | 0.318% | |
09:00 12:00 | Chance of rain. Precipitation: 0.12 in (3.0625 mm). | 47°F (8°C) | 14 mph (23 km/h) | 98% | 0.32% | |
12:00 15:00 | Chance of rain. Precipitation: 0.11 in (2.75 mm). | 49°F (9°C) | 15 mph (24 km/h) | 97% | 0.324% | |
15:00 18:00 | Chance of rain. Precipitation: 0.33 in (8.5 mm). | 51°F (11°C) | 24 mph (38 km/h) | 95% | 0.361% | |
18:00 21:00 | Chance of heavy rain. Precipitation: 0.41 in (10.3125 mm). | 52°F (11°C) | 25 mph (40 km/h) | 92% | 0.363% | |
21:00 00:00 | Chance of rain. Precipitation: 0.24 in (6.0625 mm). | 39°F (4°C) | 23 mph (36 km/h) | 90% | 0.365% |
Sunday, January 5 | sunrise: 07:27 sunset: 16:39 |
Low around 27°F (-3°C), high around 39°F (4°C). Chance of light snow most of the night and day, until late at night (9 pm). Estimated precipitation: 0.16 in (4.125 mm). Overcast skies. Wind: 28 mph (45 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Chance of light snow. Precipitation: 0.01 in (0.1875 mm). | 34°F (1°C) | 28 mph (44 km/h) | 91% | 0.342% | |
03:00 06:00 | Chance of light snow. Precipitation: 0.02 in (0.4375 mm). | 31°F (-1°C) | 28 mph (45 km/h) | 89% | 0.333% | |
06:00 09:00 | Chance of light snow. Precipitation: 0.03 in (0.875 mm). | 30°F (-1°C) | 28 mph (44 km/h) | 90% | 0.328% | |
09:00 12:00 | Chance of light snow. Precipitation: 0.03 in (0.6875 mm). | 31°F (-1°C) | 28 mph (45 km/h) | 88% | 0.323% | |
12:00 15:00 | Chance of snow. Precipitation: 0.04 in (1 mm). | 31°F (-1°C) | 27 mph (43 km/h) | 88% | 0.321% | |
15:00 18:00 | Chance of light snow. Precipitation: 0.02 in (0.4375 mm). | 30°F (-1°C) | 25 mph (40 km/h) | 89% | 0.317% | |
18:00 21:00 | Chance of light snow. Precipitation: 0.01 in (0.375 mm). | 28°F (-2°C) | 24 mph (39 km/h) | 89% | 0.316% | |
21:00 00:00 | Overcast. Precipitation: 0 in (0.125 mm). | 27°F (-3°C) | 24 mph (39 km/h) | 85% | 0.316% |
Monday, January 6 | sunrise: 07:27 sunset: 16:40 |
Low around 21°F (-6°C), high around 29°F (-2°C). Chance of light snow between midnight and 3 am. Estimated precipitation: 0 in (0.0625 mm). Times of sun and clouds. Wind: 23 mph (37 km/h). |
Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
00:00 03:00 | Chance of light snow. Precipitation: 0 in (0.0625 mm). | 26°F (-3°C) | 23 mph (37 km/h) | 85% | 0.316% | |
03:00 06:00 | Overcast. | 24°F (-4°C) | 19 mph (31 km/h) | 84% | 0.316% | |
06:00 09:00 | Mostly sunny, with a few passing clouds. | 24°F (-5°C) | 15 mph (25 km/h) | 84% | 0.317% | |
09:00 12:00 | Sunny. | 28°F (-2°C) | 17 mph (27 km/h) | 76% | 0.318% | |
12:00 15:00 | Sunny. | 29°F (-2°C) | 13 mph (21 km/h) | 77% | 0.32% | |
15:00 18:00 | Clear. | 25°F (-4°C) | 8 mph (12 km/h) | 88% | 0.321% | |
18:00 21:00 | Clear. | 23°F (-5°C) | 7 mph (10 km/h) | 89% | 0.322% | |
21:00 00:00 | A few passing clouds. | 21°F (-6°C) | 4 mph (6 km/h) | 88% | 0.324% |
Climate Chart
Places with a similar climate: Monroe (WI), De Kalb (IL), Vinton (IA), Madison, Dane County (WI), Aurora (IL), Janesville / Rock County (WI), Oelwein (IA), Prairie Du Chien (WI), Cedar Rapids (IA), Fond Du Lac County (WI), Decorah (IA), Lone Rock (WI), Watertown (WI), West Bend (WI), Dubuque (IA), Winona (MN), Rochelle (IL), Monticello (IA), Juneau, Dodge County (WI), Burlington (WI), Clinton (IA), Kenosha (WI), Ames (IA), Flint (MI), Marshalltown (IA).
Temperature variation graph for the last seven days
Humidity Variation Graph
Wind speed
Weather Station: Freeport, Albertus Airport (latitude 42-14-47N, longitude 089-34-56W)
Local Time:
Freeport is in the "America/Chicago" timezone.
The "America/Chicago" timezone uses a Standard Time (ST) / Daylight Saving Time (DST) alternation scheme, and it currently is in ST (since Sunday, 3 November 2024, 01:00 AM local time). During ST, the timezone abbreviation is CST and the offset to Universal Time (UTC, GMT or Zulu) is -6:00 hours.
Freeport will exit standard time (entering DST) on Sunday, 9 March 2025, at 02:00 AM local time, when clocks will be turned forward 1 hour to Sunday, 9 March 2025, 03:00 AM local daylight time. During DST, the timezone abbreviation is CDT and the offset to UTC will be -5:00 hours.
Weather and Temperature in Illinois