Climate and monthly weather forecastOnarga, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Onarga, Illinois, with an average temperature fluctuating between 30.7°F (-0.7°C) and 18.7°F (-7.4°C). During the coldest month, January, temperatures average a high of 30.7°F (-0.7°C) and a low of 18.7°F (-7.4°C). Weather in January »Weather in February
February, the last month of the winter in Onarga, is a wintry month, with an average temperature fluctuating between 35.1°F (1.7°C) and 22.3°F (-5.4°C). February's arrival registers an average high-temperature of an icy 35.1°F (1.7°C), closely aligning with the temperature of the previous month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Onarga, Illinois, with temperature in the range of an average high of 47.8°F (8.8°C) and an average low of 33.4°F (0.8°C). Onarga, Illinois, experiences a temperature shift with the start of March, with average high-temperatures moving from a wintry 35.1°F (1.7°C) in February to a chilly 47.8°F (8.8°C). Weather in March »Weather in April
April is a refreshing spring month in Onarga, Illinois, with an average temperature ranging between max 59.5°F (15.3°C) and min 43.7°F (6.5°C). The commencement of April sees a shift in the average high-temperature, moving from a frosty 47.8°F (8.8°C) in March to a mild 59.5°F (15.3°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Onarga, Illinois, with an average temperature fluctuating between 54.9°F (12.7°C) and 71.4°F (21.9°C). The shift from April to May brings an increase in the average high-temperature, moving from a refreshing 59.5°F (15.3°C) to a pleasant 71.4°F (21.9°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Onarga, Illinois, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.8°F (17.1°C). The start of June is characterized by a subtle increase in the average high-temperature, transitioning from an agreeable 71.4°F (21.9°C) in May to a warm 79.3°F (26.3°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Onarga, Illinois, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 64.4°F (18°C). July, noted for its average high-temperature of 81°F (27.2°C) and an average low-temperature of 64.4°F (18°C), is considered the warmest month. July's average 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 Onarga, is also a moderately hot month, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 62.6°F (17°C). The dawn of August sees an average high-temperature of a still warm 79.9°F (26.6°C), subtly contrasting with July's 81°F (27.2°C). Weather in August »Weather in September
September, the first month of the autumn in Onarga, is still a warm month, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 75.2°F (24°C). Onarga's entry into September measures an average high-temperature of a still warm 75.2°F (24°C), closely parallel to the preceding month. Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Onarga, Illinois, with an average temperature varying between 62.2°F (16.8°C) and 46.8°F (8.2°C). In Onarga, the beginning of October is marked by a lowered average high-temperature, shifting from September's warm 75.2°F (24°C) to an enjoyable 62.2°F (16.8°C). Weather in October »Weather in November
November, the last month of the autumn in Onarga, is also a frosty month, with an average temperature fluctuating between 47.8°F (8.8°C) and 34.9°F (1.6°C). Onarga's weather undergoes a significant change with the arrival of November, as the average high-temperature drops from a refreshing 62.2°F (16.8°C) in October to a chilly 47.8°F (8.8°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Onarga, Illinois, with an average temperature ranging between max 36.5°F (2.5°C) and min 26.2°F (-3.2°C). The arrival of December corresponds with a reduction in the average high-temperature, down from November's frosty 47.8°F (8.8°C) to a cold 36.5°F (2.5°C). 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
Onarga's coldest month, January, generally records average temperatures ranging from a high of 30.7°F (-0.7°C) to a low of 18.7°F (-7.4°C).
The months with the least rainfall are January, February and December Rain falls for 5.5 days and accumulates 0.91" (23mm) of rain.
In Onarga, during the entire year, the rain falls for 130.7 days and collects up to 17.13" (435mm) of precipitation.
Months with snowfall in Onarga are January through April, November and December.
In Onarga, Illinois, during the entire year, snow falls for 30.7 days and aggregates up to 8.19" (208mm) of snow.
January has the least sunshine of the year in Onarga, Illinois, with an average of 3.8h of sunshine.
The month with the most snowfall in Onarga, Illinois, is February, when snow falls for 7.6 days and typically aggregates up to 2.24" (57mm) of snow.
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 month with the most rainfall in Onarga is May, when the rain falls for 17.3 days and typically aggregates up to 2.44" (62mm) of precipitation.
In Onarga, Illinois, snow does not fall in May through October.
June has the longest days of the year, with an average of 15h and 0min of daylight.
June has the most sunshine of the year in Onarga, Illinois, with an average of 9.9h of sunshine.
June and July, with an average maximum UV index of 6, are months with the highest UV index in Onarga.
July is the month when Onarga's temperatures reach their peak, with averages of 81°F (27.2°C) and lows of 64.4°F (18°C).
The most humid month is July, with an average relative humidity of 85%.
The least humid month in Onarga, Illinois, is October, with an average relative humidity of 71%.
The month with the shortest days in Onarga, Illinois, is December, with an average of 9h and 18min of daylight.
With an average maximum UV index of 1, December is the month with the lowest UV index in Onarga.
Average temperature
Onarga, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure
Onarga, IL
- Average pressure in January:
30.13"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:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Onarga, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Onarga, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Onarga, IL
- Average rainfall in January:
0.91" - Average rainfall in February:
0.91" - Average rainfall in March:
1.46" - Average rainfall in April:
1.93" - Average rainfall in May:
2.44" - Average rainfall in June:
1.89"
The wettest month (with the highest rainfall) is May (2.44").
The driest months (with the least rainfall) are January, February and December (0.91").
Average rainfall days
Onarga, IL
- Average rainfall days in January:
5.5 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
7.1 days
The month with the highest number of rainy days is May (17.3 days).
The months with the least rainy days are January and February (5.5 days).
Average snowfall
Onarga, IL
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Onarga, IL
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
7.6 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 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:
0.2 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Onarga, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - 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 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
9h and 42min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 24min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Onarga, IL
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
16.6 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11.4 days).
Average UV index
Onarga, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Onarga, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility
Onarga, 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).
