Climate and monthly weather forecastLacon, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Lacon, Illinois, with an average temperature varying between 17.4°F (-8.1°C) and 29.7°F (-1.3°C). The coldest time of the year is January, with temperatures averaging a high of 29.7°F (-1.3°C) and a low of 17.4°F (-8.1°C). Weather in January »Weather in February
The last month of the winter, February, is a cold month in Lacon, Illinois, with an average temperature ranging between max 34°F (1.1°C) and min 21.6°F (-5.8°C). The shift to February signals an average high-temperature of a wintry 34°F (1.1°C), subtly varied from January's 29.7°F (-1.3°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Lacon, Illinois, with an average temperature fluctuating between 33.3°F (0.7°C) and 47.5°F (8.6°C). March's arrival brings a change in high-temperatures, moving from a cold 34°F (1.1°C) in February to a chilly 47.5°F (8.6°C). Weather in March »Weather in April
April in Lacon, Illinois, is a moderate spring month, with an average temperature ranging between max 59.5°F (15.3°C) and min 43.3°F (6.3°C). Lacon's transition into April sees a rise in the average high-temperature, advancing from a chilly 47.5°F (8.6°C) in March to a mild 59.5°F (15.3°C). Weather in April »Weather in May
May, the last month of the spring in Lacon, is a pleasant month, with temperature in the range of an average low of 54.1°F (12.3°C) and an average high of 71.2°F (21.8°C). In Lacon, the average high-temperature in May increases from a refreshing 59.5°F (15.3°C) in April to an agreeable 71.2°F (21.8°C). Weather in May »Weather in June
June, the first month of the summer in Lacon, is a moderately hot month, with an average temperature ranging between min 62.1°F (16.7°C) and max 79°F (26.1°C). The average high-temperature mildly increases in June, edging from an agreeable 71.2°F (21.8°C) in May to a moderately hot 79°F (26.1°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Lacon, Illinois, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 64.6°F (18.1°C). July, characterized by an average high temperature of 81°F (27.2°C) and a low temperature of 64.6°F (18.1°C), is generally the warmest month. July's heat index is estimated at a hot 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Lacon, is another warm month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 62.6°F (17°C). August begins with an average high-temperature of a still moderately hot 80.2°F (26.8°C), reflecting close similarity to the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Lacon, is also a moderately hot month, with an average temperature ranging between min 56.7°F (13.7°C) and max 75.4°F (24.1°C). September experiences an average high-temperature of a still moderately hot 75.4°F (24.1°C), barely different from August's 80.2°F (26.8°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Lacon, Illinois, with an average temperature fluctuating between 61.7°F (16.5°C) and 46°F (7.8°C). The arrival of October signals a shift in temperature, down from a moderately hot 75.4°F (24.1°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Lacon, Illinois, with an average temperature ranging between min 34°F (1.1°C) and max 47.3°F (8.5°C). The arrival of November signals a clear decrease in the average high-temperature, falling from a comfortable 61.7°F (16.5°C) in October to a frosty 47.3°F (8.5°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Lacon, Illinois, with an average temperature ranging between min 25.3°F (-3.7°C) and max 35.8°F (2.1°C). In December, the meteorological conditions alter, with the average high-temperature shifting from a chilly 47.3°F (8.5°C) in November to a wintry 35.8°F (2.1°C). Weather in December »Updated: Jul 23, 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
With average temperatures fluctuating between a high of 29.7°F (-1.3°C) and a low of 17.4°F (-8.1°C), January stands out as the coldest month.
January is the month with the least rainfall. Rain falls for 5.9 days and accumulates 1.57" (40mm) of precipitation.
In Lacon, during the entire year, the rain falls for 148.8 days and collects up to 30.94" (786mm) of precipitation.
Months with snowfall are January through April, October through December.
Throughout the year, there are 33.3 snowfall days, and 14.33" (364mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 3.8h of sunshine.
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
February is the month with the most snowfall. Snow falls for 8.5 days and accumulates 3.62" (92mm) 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 is May, when the rain falls for 19.1 days and typically aggregates up to 4.57" (116mm) of precipitation.
May through September are months without snowfall.
With an average of 15h and 6min of daylight, June has the longest days of the year.
June has the most sunshine of the year, with an average of 9.8h of sunshine.
With average high temperatures of 81°F (27.2°C) and lows of 64.6°F (18.1°C), July is the warmest month.
July is the most humid month, with an average relative humidity of 85%.
The month with the highest UV index is July, with an average maximum UV index of 6.
October is the least humid month, with an average relative humidity of 72%.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Lacon, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure
Lacon, 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:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"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:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Lacon, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.7mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Lacon, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Lacon, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
1.65" - Average rainfall in March:
2.24" - Average rainfall in April:
3.94" - Average rainfall in May:
4.57" - Average rainfall in June:
3.27"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days
Lacon, IL
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
13.1 days - Average rainfall days in April:
16.2 days - Average rainfall days in May:
19.1 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
8.4 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (5.5 days).
Average snowfall
Lacon, IL
The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Lacon, IL
- Average snowfall days in January:
10.4 days - Average snowfall days in February:
8.5 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
1.2 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:
0.3 days - Average snowfall days in November:
1.9 days - Average snowfall days in December:
6.9 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Lacon, IL
- Average daylight in January:
9h and 36min - 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 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 18min
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 18min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 54min - 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 June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Lacon, IL
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
10.1 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
16 days - Average sunshine days in October:
16.2 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
16.9 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (9.8 days).
Average UV index
Lacon, IL
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Lacon, IL
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Lacon, 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).
