Climate and monthly weather forecastLyndon, IL
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Lyndon, Illinois, with an average temperature ranging between min 15.1°F (-9.4°C) and max 27.7°F (-2.4°C). Lyndon notes the coldest temperatures in January, with a high average of 27.7°F (-2.4°C) and a low of 15.1°F (-9.4°C). Weather in January »Weather in February
The last month of the winter, February, is an icy month in Lyndon, Illinois, with an average temperature ranging between min 18.9°F (-7.3°C) and max 32°F (0°C). Lyndon signifies an average high-temperature of a cold 32°F (0°C) in February, closely mirroring the 27.7°F (-2.4°C) of January. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Lyndon, Illinois, with temperature in the range of an average low of 31.5°F (-0.3°C) and an average high of 46.4°F (8°C). The shift from February to March brings a noticeable increase in the average high-temperature, escalating from an icy 32°F (0°C) to a chilly 46.4°F (8°C). Weather in March »Weather in April
April is a refreshing spring month in Lyndon, Illinois, with an average temperature fluctuating between 58.3°F (14.6°C) and 42.1°F (5.6°C). April's arrival signals an increase in average high-temperatures, moving from March's chilly 46.4°F (8°C) to a mild 58.3°F (14.6°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Lyndon, Illinois, with an average temperature ranging between min 53.1°F (11.7°C) and max 70°F (21.1°C). The start of May signals an increase in the average high-temperature, moving from a mild 58.3°F (14.6°C) in April to a pleasant 70°F (21.1°C). Weather in May »Weather in June
June, the first month of the summer in Lyndon, is a moderately hot month, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 61.3°F (16.3°C). As May transitions into June, a subtle temperature shift is observed, with average highs adjusting from a pleasant 70°F (21.1°C) 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 Lyndon, Illinois, with an average temperature ranging between max 80.2°F (26.8°C) and min 64°F (17.8°C). Lyndon's temperatures tend to reach their peak averages in July, with a high of 80.2°F (26.8°C) and a low of 64°F (17.8°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Lyndon, Illinois, with an average temperature fluctuating between 62.1°F (16.7°C) and 79.9°F (26.6°C). A minimal variation is noted in Lyndon's average high-temperature at the onset of August, reaching a still moderately hot 79.9°F (26.6°C) from July's 80.2°F (26.8°C). Weather in August »Weather in September
September, the first month of the autumn in Lyndon, is also a moderately hot month, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 74.7°F (23.7°C). Lyndon experiences an average high-temperature of a still warm 74.7°F (23.7°C) in September, marking an insignificant shift from 79.9°F (26.6°C) in August. Weather in September »Weather in October
October, like September, in Lyndon, Illinois, is another refreshing autumn month, with temperature in the range of an average high of 61°F (16.1°C) and an average low of 44.6°F (7°C). Lyndon's average high-temperature decreases in October, falling from a moderately hot 74.7°F (23.7°C) in September to an enjoyable 61°F (16.1°C). Weather in October »Weather in November
November, the last month of the autumn in Lyndon, is another chilly month, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 46°F (7.8°C). Lyndon's transition into November is marked by a clear drop in the average high-temperature, receding from a comfortable 61°F (16.1°C) in October to a frosty 46°F (7.8°C). Weather in November »Weather in December
December, the first month of the winter in Lyndon, is also a wintry month, with an average temperature ranging between max 34.2°F (1.2°C) and min 23.5°F (-4.7°C). Lyndon's transition into December involves a shift in temperature, receding from a chilly 46°F (7.8°C) in November to a cold 34.2°F (1.2°C). Weather in December »Updated: Jun 4, 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 tends to be January, when average temperatures fluctuate between a high of 27.7°F (-2.4°C) and a low of 15.1°F (-9.4°C).
January and July, with an average relative humidity of 85%, are most humid months.
The month with the least rainfall is January, when the rain falls for 5.2 days and typically collects 1.42" (36mm) of precipitation.
In Lyndon, Illinois, during the entire year, the rain falls for 151.5 days and collects up to 30.24" (768mm) of precipitation.
January through April, October through December are months with snowfall.
The month with the most snowfall is January, when snow falls for 10.5 days and typically aggregates up to 4.49" (114mm) of snow.
In Lyndon, during the entire year, snow falls for 37.9 days and aggregates up to 15.83" (402mm) of snow.
January has the least sunshine of the year, with an average of 3.9h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Lyndon.
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 18.8 days and typically aggregates up to 4.53" (115mm) of precipitation.
May through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 12min of daylight.
July, recognised by an average high temperature of 80.2°F (26.8°C) and a low of 64°F (17.8°C), is Lyndon's warmest month.
The month with the most sunshine is July, with an average of 9.9h of sunshine.
July and August, with an average maximum UV index of 6, are months with the highest UV index.
The least humid month is October, with an average relative humidity of 72%.
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Lyndon, IL
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure
Lyndon, 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:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"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
Lyndon, IL
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.2mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.2mph - Average wind speed in November:
10mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Lyndon, IL
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Lyndon, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.61" - Average rainfall in March:
1.97" - Average rainfall in April:
3.54" - Average rainfall in May:
4.53" - Average rainfall in June:
3.5"
- Average rainfall in July:
2.99" - Average rainfall in August:
2.24" - Average rainfall in September:
2.2" - Average rainfall in October:
2.83" - Average rainfall in November:
1.81" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days
Lyndon, IL
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5.4 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
16.4 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
18.3 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.2 days).
Average snowfall
Lyndon, IL
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Lyndon, IL
- Average snowfall days in January:
10.5 days - Average snowfall days in February:
9.7 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
1.3 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:
0.4 days - Average snowfall days in November:
2.7 days - Average snowfall days in December:
7.8 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Lyndon, 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 36min - Average daylight in June:
15h and 12min
- 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 48min - Average daylight in December:
9h and 12min
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 12min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 30min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 42min - Average sunshine in September:
9h and 12min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Lyndon, IL
- Average sunshine days in January:
16.1 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
9.9 days - Average sunshine days in June:
9.1 days
- Average sunshine days in July:
9.4 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
17.8 days - Average sunshine days in December:
17 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.1 days).
Average UV index
Lyndon, IL
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Lyndon, IL
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Lyndon, IL
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
