Climate and monthly weather forecastNewark, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Newark, Illinois, is another subzero cold winter month, with an average temperature ranging between max 28.8°F (-1.8°C) and min 17.1°F (-8.3°C). In Newark, the month of January is known for its lowest average temperatures, reaching a high of 28.8°F (-1.8°C) and a low of 17.1°F (-8.3°C). Weather in January »Weather in February
The last month of the winter, February, is a cold month in Newark, Illinois, with an average temperature ranging between min 19.9°F (-6.7°C) and max 33.1°F (0.6°C). Newark records an average high-temperature of a wintry 33.1°F (0.6°C) in February, maintaining a close correlation with January's 28.8°F (-1.8°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Newark, Illinois, with an average temperature ranging between min 32°F (0°C) and max 46.4°F (8°C). The rise of average high-temperatures is seen in March, with an increase from an icy 33.1°F (0.6°C) in February to a frosty 46.4°F (8°C). Weather in March »Weather in April
April is a mild spring month in Newark, Illinois, with an average temperature fluctuating between 58.5°F (14.7°C) and 41.7°F (5.4°C). The beginning of April signals a rise in the average high-temperature, moving from a chilly 46.4°F (8°C) in March to a moderate 58.5°F (14.7°C). Weather in April »Weather in May
May, the last month of the spring in Newark, is a pleasant month, with an average temperature varying between 53.1°F (11.7°C) and 70.3°F (21.3°C). With the onset of May, Newark's average high-temperature experiences a rise, moving from April's moderate 58.5°F (14.7°C) to an agreeable 70.3°F (21.3°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Newark, Illinois, with an average temperature fluctuating between 78.6°F (25.9°C) and 61.3°F (16.3°C). June's arrival brings a modest temperature shift, moving from an agreeable 70.3°F (21.3°C) in May to a warm 78.6°F (25.9°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Newark, Illinois, with an average temperature ranging between min 64°F (17.8°C) and max 81°F (27.2°C). The highest temperatures are recorded in July, with averages reaching a high of 81°F (27.2°C) and a low of 64°F (17.8°C). July's heat index is computed to be a hot 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Newark, is another warm month, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 62.1°F (16.7°C). August commences with an average high-temperature of a still warm 79.3°F (26.3°C), showing little deviation from July's 81°F (27.2°C). Weather in August »Weather in September
September, the first month of the autumn in Newark, is still a warm month, with an average temperature fluctuating between 74.5°F (23.6°C) and 56.1°F (13.4°C). Newark's average high-temperature in September sits at a still moderately hot 74.5°F (23.6°C), showing little difference from the previous month. Weather in September »Weather in October
October, like September, in Newark, Illinois, is another comfortable autumn month, with an average temperature varying between 61.7°F (16.5°C) and 45.5°F (7.5°C). October's arrival comes with a decrease in the average high-temperature, moving from a warm 74.5°F (23.6°C) in September to a comfortable 61.7°F (16.5°C). Weather in October »Weather in November
November, the last month of the autumn in Newark, is also a frosty month, with an average temperature ranging between min 33.4°F (0.8°C) and max 46.8°F (8.2°C). The start of November signals a considerable reduction in the average high-temperature, receding from a refreshing 61.7°F (16.5°C) in October to a frosty 46.8°F (8.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Newark, Illinois, with an average temperature fluctuating between 34.7°F (1.5°C) and 24.8°F (-4°C). The start of December signals a decrease in the average high-temperature, transitioning from a frosty 46.8°F (8.2°C) in November to a wintry 34.7°F (1.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Newark, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure
Newark, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Newark, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
10mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Newark, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Newark, IL
- Average rainfall in January:
0.43" - Average rainfall in February:
0.39" - Average rainfall in March:
0.47" - Average rainfall in April:
1.02" - Average rainfall in May:
1.14" - Average rainfall in June:
0.87"
- Average rainfall in July:
0.98" - Average rainfall in August:
0.59" - Average rainfall in September:
0.63" - Average rainfall in October:
0.75" - Average rainfall in November:
0.35" - Average rainfall in December:
0.43"
The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is November (0.35").
Average rainfall days
Newark, IL
- Average rainfall days in January:
3 days - Average rainfall days in February:
3.5 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
13.5 days - Average rainfall days in June:
11.8 days
- Average rainfall days in July:
10.9 days - Average rainfall days in August:
9.8 days - Average rainfall days in September:
7.5 days - Average rainfall days in October:
8.1 days - Average rainfall days in November:
5.4 days - Average rainfall days in December:
4.7 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3 days).
Average snowfall
Newark, IL
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Newark, IL
- Average snowfall days in January:
8.3 days - Average snowfall days in February:
6.2 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
1 days - Average snowfall days in May:
0.1 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:
0.4 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
4.8 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Newark, IL
- Average daylight in January:
9h and 36min - 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 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 12min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Newark, IL
- Average sunshine days in January:
22.6 days - Average sunshine days in February:
20.2 days - Average sunshine days in March:
19.1 days - Average sunshine days in April:
16.5 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
15 days
- Average sunshine days in July:
15 days - Average sunshine days in August:
18.4 days - Average sunshine days in September:
20 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
22.2 days - Average sunshine days in December:
23 days
The month with the most sunshine days is December (23 days).
The month with the least sunshine days is May (14.7 days).
Average UV index
Newark, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Newark, IL
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility
Newark, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





