Climate and monthly weather forecastAntioch, IL
Climate and monthly weather forecast
The climate of Antioch
Categorized under the Köppen climate classification: Dfa, Antioch, Illinois, experiences a humid continental climate with no dry season and hot summers. Geographical coordinates of 42.4772°N, 88.0956°W, incorporate the tendencies of significant seasonal changes throughout the year.Temperature demonstrates distinct fluctuations, ranging from a chilly average low of 14.9°F (-9.5°C) in January up to a warm high of 79°F (26.1°C) during July. Relative humidity stays comparatively steady around the 80% mark, albeit with minor deviations. These variations in humidity often lead to alterations in air pressure, swinging between 29.92" (760mm) in June to 30.1" (765mm) in January and December.
Rainfall distribution follows a somewhat even pattern with a slight peak in June at 3.54" (90mm) and the driest month in December with 1.06" (27mm). Although rainfall is spread quite evenly through the year, number of rainy days peak in July at 18.5 days, indicating frequent, yet not so heavy showers. As for snowfall, quite predictably, it is observed from November to April with a peak in January of 4.33" (110mm).
Wind speed oscillates moderately throughout the year, reaching a maximum of 10.3mph (16.6km/h) in January and December and dropping to 6.4mph (10.3km/h) in August. Despite this difference, it does not significantly impact overall weather comfort levels in Antioch.
The best time to visit Antioch
The best time to visit Antioch is heavily dependent on the visitor's weather preference. However, from a comfortable temperature point of view, the period from May to August is the most favorable. The average temperatures during these months hover between 53.2°F (11.8°C) in May up to 79°F (26.1°C) in July. The rainfall is skewed towards moderate levels, yet the number of sunny hours is at the yearly maximum, making these months perfect for outdoor activities.The worst time to visit Antioch
Visitors unfamiliar or uncomfortable with cold weather, severe winds, and substantial snowfall should consider avoiding the winter months, particularly between December to February. The temperature typically dips to an average low of 14.9°F (-9.5°C) in January and the rate of snowfall reaches 4.33" (110mm) in the same month.Spring weather in Antioch
In Antioch, spring weather can be capricious with temperatures gradually increasing from 53.2°F (11.8°C) in March to 65.1°F (18.4°C) in May. Rainfall ensues with a noticeable frequency, leading to a peak in May at 3.03" (77mm). Despite the volatility in weather, spring berths the re-emergence of daylight hours, extending from 13.4 hours in March to 14.6 hours in May, which compels a beautiful transformation of the local scenery.Summer weather in Antioch
Antioch experiences quite a warm and comfortable summer, with average temperatures oscillating from 65.1°F (18.4°C) to 77.5°F (25.3°C) between June and August. However, summer months carry the most humidity of the year, upwards of 80%. The season does bring a peak in rainfall, yet the increased daylight hours between 14.6 hours in June to 13.8 hours in August enables ample time for outdoor exploration and activities.Autumn weather in Antioch
With the transition to Autum, temperatures in Antioch moderate from the peak of 71.6°F (22°C) in September to a cooler 44.4°F (6.9°C) in November. The number of daylight hours diminishes from 12.5 hours in September to 9.8 hours in November. Rainfall declines, marking the arrival of drier conditions, while the autumn colors transform the landscape into a picturesque panorama.Winter weather in Antioch
Winter weather in Antioch is characterized by dwindling temperatures, snowfall, and shorter daylight hours. The temperatures drop from 32.5°F (0.3°C) in December all the way down to 26.2°F (-3.2°C) in February. Snowfall commences from November to April with a peak in January at 4.33" (110mm). Despite being the coldest part of the year, the serene snow-laden landscapes of Antioch rendering a captivating aura.Weather in January
The beginning of the year in Antioch, Illinois, sees the city embrace a typical winter's chill. A stark contrast from the warmth of the holiday season, January carries the mantle of being one of the coldest months. With temperatures dipping as low as 14.9°F (-9.5°C) and only slightly warming up to an average high of 26.2°F (-3.2°C), it is clear that winter is in full swing. Weather in January »Weather in February
The city of Antioch continues its wintery grasp well into February. While there is a slight increase in average temperature, from 14.9°F (-9.5°C) in January to 17.4°F (-8.1°C), winter retains its hold. The month is characterized by snowfall and chilly winds, making winter attire essential for anyone venturing outdoors. Weather in February »Weather in March
Weather dynamics start shifting significantly in March as Antioch gradually transitions into spring. A warming trend is established with temperatures swinging from a low of 28.8°F (-1.8°C) to a high of 42.4°F (5.8°C), making it considerably milder compared to the preceding months. Weather in March »Weather in April
Come April, spring is in full bloom in Antioch. The month sees a significant increase in temperature with a high of 53.2°F (11.8°C) attained, a leap from March's maximum of 42.4°F (5.8°C). The pleasant weather signifies the onset of outdoor recreational activities, festivals, and spring-cleaning efforts. Weather in April »Weather in May
May carries the typical virtues of a late spring month in Antioch. The town basks in warmer temperatures, with an average high of 65.1°F (18.4°C), paving the way for delightful weather in the daytime. Mother Nature appears in full splendor as the rainfall nurtures blossoming flowers and flourishing greenery. Weather in May »Weather in June
Antioch welcomes the summer months starting with June. A general uptick in temperature is experienced as the city records an average high of 74.5°F (23.6°C). This shift in weather pattern embraces the joys of summer, from casual walks in parks to sunbathing by the local lakes. Weather in June »Weather in July
July is the pinnacle of summer in the city of Antioch. It sees the year’s highest average temperatures, from 63.1°F (17.3°C) to 79°F (26.1°C). Clear blue skies and consistent sunny days grace the city, perfect for beach-goers and sun-lovers. Weather in July »Weather in August
The sun-soaked days continue in Antioch as August retains summer's charm. The weather remains consistently warm, with temperatures slightly dropping from July's average high of 79°F (26.1°C) to 77.5°F (25.3°C). It's the perfect time to continue visiting local attractions and engaging in summer activities. Weather in August »Weather in September
As September dawns upon Antioch, it brings with it welcoming signs of the upcoming fall. The month witnesses the temperatures buttoning down, with the average high dropping to 71.6°F (22°C) from August's 77.5°F (25.3°C), signaling the coming departure of summer's heat. Weather in September »Weather in October
October in Antioch fully embraces the fall season. The crisp air, cooler temperatures, and changing leaves mark the transition into a cooler time of the year. From a crisp high of 58.3°F (14.6°C), the focus shifts towards preserving fall's memories, harvesting crops, and preparing for the approaching cold. Weather in October »Weather in November
Antioch begins sliding into the quiet winter season in November. The temperatures dip dramatically, with the average high falling to 44.4°F (6.9°C) from October's 58.3°F (14.6°C). This month paves the way for winters as Antioch witnesses the first hint of snowfall since May. Weather in November »Weather in December
The city of Antioch caps off the year with a fully realized winter in December. Temperatures plunge to a low of 22.8°F (-5.1°C), and the average high stands at a shivering 32.5°F (0.3°C). Snow blankets the city, transforming it into a winter wonderland. Weather in December »Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The coldest period in Antioch, Illinois, tends to be January, when average temperatures fluctuate between a high of 26.2°F (-3.2°C) and a low of 14.9°F (-9.5°C).
January is the most humid month, with an average relative humidity of 85%.
Throughout the year, in Antioch, Illinois, there are 139.6 rainfall days, and 26.18" (665mm) of precipitation is accumulated.
Months with snowfall in Antioch, Illinois, are January through May, October through December.
The month with the most snowfall in Antioch, Illinois, is January, when snow falls for 10.1 days and typically aggregates up to 4.33" (110mm) of snow.
Throughout the year, there are 38.2 snowfall days, and 15.59" (396mm) of snow is accumulated.
January and February, with an average of 3.6h of sunshine, are months with the least sunshine in Antioch, Illinois.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Antioch.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
The months with the highest UV index are May through August, with an average maximum UV index of 5.
The month with the most rainfall in Antioch, Illinois, is June, when the rain falls for 17.3 days and typically aggregates up to 3.54" (90mm) of precipitation.
In Antioch, snow does not fall in June through September.
June has the longest days of the year in Antioch, Illinois, with an average of 15h and 12min of daylight.
July registers as the month with the average highest temperatures, reaching 79°F (26.1°C) at its peak and 63.1°F (17.3°C) at the lowest.
The months with the most sunshine in Antioch are July and August, with an average of 9.9h of sunshine.
The least humid month in Antioch, Illinois, is October, with an average relative humidity of 76%.
The month with the least rainfall in Antioch is December, when the rain falls for 6 days and typically collects 1.06" (27mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Antioch, IL
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (26.2°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure
Antioch, IL
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Antioch, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.7mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.6mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Antioch, IL
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall
Antioch, IL
- Average rainfall in January:
1.26" - Average rainfall in February:
1.26" - Average rainfall in March:
1.5" - Average rainfall in April:
3.19" - Average rainfall in May:
3.03" - Average rainfall in June:
3.54"
- Average rainfall in July:
3.15" - Average rainfall in August:
2.99" - Average rainfall in September:
1.89" - Average rainfall in October:
2.17" - Average rainfall in November:
1.14" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is December (1.06").
Average rainfall days
Antioch, IL
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
3.4 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
18.5 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.1 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
6 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (3.4 days).
Average snowfall
Antioch, IL
- Average snowfall in January:
4.33" - Average snowfall in February:
3.78" - Average snowfall in March:
1.85" - Average snowfall in April:
1.85" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Antioch, IL
- Average snowfall days in January:
10.1 days - Average snowfall days in February:
8.5 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
7.8 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Antioch, IL
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
3h and 36min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 18min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 24min - Average sunshine in November:
4h and 54min - Average sunshine in December:
3h and 54min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days
Antioch, IL
- Average sunshine days in January:
17.6 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
11.1 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
9.9 days - Average sunshine days in August:
12.2 days - Average sunshine days in September:
14.6 days - Average sunshine days in October:
16.2 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index
Antioch, IL
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Antioch, IL
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility
Antioch, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
