Climate and monthly weather forecastUnionville, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Unionville, Illinois, is an icy winter month, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 28.6°F (-1.9°C). Unionville's coldest temperatures are experienced in January, with average high temperatures of 41.5°F (5.3°C) and lows of 28.6°F (-1.9°C). Weather in January »Weather in February
February, the last month of the winter in Unionville, is a frosty month, with an average temperature varying between 46.6°F (8.1°C) and 32.4°F (0.2°C). The arrival of February marks a slight shift to an average high-temperature of a frosty 46.6°F (8.1°C) from January's 41.5°F (5.3°C). Weather in February »Weather in March
March, the first month of the spring in Unionville, is a mild month, with temperature in the range of an average low of 40.5°F (4.7°C) and an average high of 56.8°F (13.8°C). In Unionville, the average high-temperature in March increases from a frosty 46.6°F (8.1°C) in February to a moderate 56.8°F (13.8°C). Weather in March »Weather in April
April in Unionville, Illinois, is a refreshing spring month, with temperature in the range of an average high of 67.8°F (19.9°C) and an average low of 49.6°F (9.8°C). Observing a rise in April, the average high-temperature goes from March's mild 56.8°F (13.8°C) to a still refreshing 67.8°F (19.9°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Unionville, Illinois, with an average temperature fluctuating between 59°F (15°C) and 76.6°F (24.8°C). The arrival of May signals a slight increase in the average high-temperature, moving from a refreshing 67.8°F (19.9°C) in April to a warm 76.6°F (24.8°C). Weather in May »Weather in June
June, the first month of the summer in Unionville, is still a warm month, with an average temperature fluctuating between 85.8°F (29.9°C) and 66.4°F (19.1°C). As June sets, the average high-temperature shows an increase, moving up from a moderately hot 76.6°F (24.8°C) in May to a still warm 85.8°F (29.9°C). Weather in June »Weather in July
July is a hot summer month in Unionville, Illinois, with an average temperature varying between 69.4°F (20.8°C) and 88.7°F (31.5°C). July is the month when Unionville sees the highest average temperatures, with a high of 88.7°F (31.5°C) and a low of 69.4°F (20.8°C). For July, the heat index is computed to be a blisteringly hot 105.8°F (41°C). Weather in July »Weather in August
August, the last month of the summer in Unionville, is another hot month, with an average temperature ranging between min 67.6°F (19.8°C) and max 87.3°F (30.7°C). The shift into August finds Unionville at an average high-temperature of a still hot 87.3°F (30.7°C), closely comparable to July's conditions. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Unionville, Illinois, with an average temperature fluctuating between 61.9°F (16.6°C) and 81.7°F (27.6°C). September reveals a small adjustment in temperature, transitioning from an average high of a tropical 87.3°F (30.7°C) in August to a warm 81.7°F (27.6°C). Weather in September »Weather in October
October, like September, is an agreeable autumn month in Unionville, Illinois, with an average temperature fluctuating between 51.1°F (10.6°C) and 69.3°F (20.7°C). The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from a moderately hot 81.7°F (27.6°C) in September to a pleasant 69.3°F (20.7°C). Weather in October »Weather in November
November, the last month of the autumn in Unionville, is also a moderate month, with an average temperature ranging between max 55.6°F (13.1°C) and min 40.1°F (4.5°C). In November, the average high-temperature goes from a pleasant 69.3°F (20.7°C) in October to a mild 55.6°F (13.1°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Unionville, Illinois, with an average temperature varying between 34.2°F (1.2°C) and 46.2°F (7.9°C). The onset of December coincides with a reduction in the average high-temperature, falling from a mild 55.6°F (13.1°C) in November to a chilly 46.2°F (7.9°C). Weather in December »Updated: Aug 26, 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
Unionville's temperature records reveal January as the coldest month, marked by average highs of 41.5°F (5.3°C) and lows of 28.6°F (-1.9°C).
In Unionville, during the entire year, the rain falls for 126.4 days and collects up to 16.89" (429mm) of precipitation.
Months with snowfall are January through March, November and December.
Throughout the year, in Unionville, there are 8.9 snowfall days, and 1.65" (42mm) of snow is accumulated.
The months with the lowest UV index are January and December, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 3.3 days and typically aggregates up to 0.71" (18mm) of snow.
The month with the least sunshine is February, with an average of 4.6h of sunshine.
The months with the highest humidity are March and May, with an average relative humidity of 79%.
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.
In Unionville, snow does not fall in April through October.
May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 1.93" (49mm) of precipitation.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
With an average of 14h and 42min of daylight, June has the longest days of the year.
The months with the most sunshine are June and July, with an average of 10.5h of sunshine.
During the warmest month in Unionville, July, temperatures average a high of 88.7°F (31.5°C) and a low of 69.4°F (20.8°C).
The month with the least rainfall is September, when the rain falls for 8.6 days and typically collects 0.63" (16mm) of precipitation.
With an average relative humidity of 70%, October is the least humid month.
The month with the shortest days is December, with an average of 9h and 42min of daylight.
Average temperature
Unionville, IL
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure
Unionville, IL
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"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:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Unionville, IL
- Average wind speed in January:
8.9mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
9mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Unionville, IL
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Unionville, IL
- Average rainfall in January:
0.87" - Average rainfall in February:
1.81" - Average rainfall in March:
1.65" - Average rainfall in April:
1.69" - Average rainfall in May:
1.93" - Average rainfall in June:
1.42"
- Average rainfall in July:
1.73" - Average rainfall in August:
1.65" - Average rainfall in September:
0.63" - Average rainfall in October:
1.14" - Average rainfall in November:
1.22" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days
Unionville, IL
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.7 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
11.4 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
11.8 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
8.6 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
9 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is October (7.6 days).
Average snowfall
Unionville, IL
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Unionville, IL
- Average snowfall days in January:
2.5 days - Average snowfall days in February:
3.3 days - Average snowfall days in March:
1 days - Average snowfall days in April:
0.2 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 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
1.4 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Unionville, IL
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 42min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Unionville, IL
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
16.3 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
15.5 days
- Average sunshine days in July:
14.2 days - Average sunshine days in August:
16.8 days - Average sunshine days in September:
19.9 days - Average sunshine days in October:
22.3 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
20 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (14.2 days).
Average UV index
Unionville, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Unionville, IL
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility
Unionville, 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).
