Climate and monthly weather forecastThomasboro, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Thomasboro, Illinois, is another subzero cold winter month, with temperature in the range of an average low of 19.8°F (-6.8°C) and an average high of 31.5°F (-0.3°C). The coldest temperatures occur during January, when averages reach a peak of 31.5°F (-0.3°C) and a low of 19.8°F (-6.8°C). Weather in January »Weather in February
February, the last month of the winter in Thomasboro, is a wintry month, with an average temperature ranging between min 23.7°F (-4.6°C) and max 36.1°F (2.3°C). With the advent of February, Thomasboro's high-temperatures adjust to an icy 36.1°F (2.3°C), closely aligning with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Thomasboro, Illinois, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 34.3°F (1.3°C). An increase in the average high-temperature marks March, moving from February's wintry 36.1°F (2.3°C) to a frosty 49.1°F (9.5°C). Weather in March »Weather in April
April in Thomasboro, Illinois, is an enjoyable spring month, with an average temperature varying between 45.3°F (7.4°C) and 60.8°F (16°C). In April, the meteorological conditions change with the average high-temperature moving from a frosty 49.1°F (9.5°C) in March to an enjoyable 60.8°F (16°C). Weather in April »Weather in May
May, the last month of the spring in Thomasboro, is a pleasant month, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 72.1°F (22.3°C). Observing a rise in May, the average high-temperature goes from April's comfortable 60.8°F (16°C) to a pleasant 72.1°F (22.3°C). Weather in May »Weather in June
June, the first month of the summer in Thomasboro, is a warm month, with an average temperature varying between 79.9°F (26.6°C) and 63.7°F (17.6°C). The beginning of June marks a minor shift in the average high-temperature, moving from May's agreeable 72.1°F (22.3°C) to a moderately hot 79.9°F (26.6°C). Weather in June »Weather in July
July, like June, in Thomasboro, Illinois, is another warm summer month, with an average temperature ranging between min 64.8°F (18.2°C) and max 81°F (27.2°C). July, marked by an average high-temperature of 81°F (27.2°C) and a low-temperature of 64.8°F (18.2°C), is the warmest month. For July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Thomasboro, Illinois, with an average temperature fluctuating between 80.2°F (26.8°C) and 63.1°F (17.3°C). Thomasboro indicates an average high-temperature of a still warm 80.2°F (26.8°C) in August, showing minor variation from July's 81°F (27.2°C). Weather in August »Weather in September
September, the first month of the autumn in Thomasboro, is still a warm month, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 76.1°F (24.5°C). In Thomasboro, September's average high-temperature stands at a still warm 76.1°F (24.5°C), closely related to the preceding month. Weather in September »Weather in October
October, like September, in Thomasboro, Illinois, is another comfortable autumn month, with an average temperature ranging between min 47.1°F (8.4°C) and max 63.1°F (17.3°C). With the onset of October, Thomasboro experiences a modest temperature adjustment, with the average high-temperature receding from a warm 76.1°F (24.5°C) in September to an enjoyable 63.1°F (17.3°C). Weather in October »Weather in November
November, the last month of the autumn in Thomasboro, is also a frosty month, with an average temperature varying between 48.7°F (9.3°C) and 35.6°F (2°C). With the onset of November, Thomasboro's weather experiences a distinct temperature drop, moving from a refreshing 63.1°F (17.3°C) in October to a chilly 48.7°F (9.3°C). Weather in November »Weather in December
December, the first month of the winter in Thomasboro, is still a cold month, with an average temperature fluctuating between 37.6°F (3.1°C) and 27.5°F (-2.5°C). The arrival of December corresponds with a reduction in the average high-temperature, down from November's chilly 48.7°F (9.3°C) to an icy 37.6°F (3.1°C). Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Thomasboro, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Thomasboro, IL
- Average pressure in January:
30.14"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:
29.96"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:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Thomasboro, IL
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.5mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.4mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Thomasboro, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Thomasboro, IL
- Average rainfall in January:
0.87" - Average rainfall in February:
0.67" - Average rainfall in March:
1.22" - Average rainfall in April:
1.57" - Average rainfall in May:
1.77" - Average rainfall in June:
1.57"
- Average rainfall in July:
1.38" - Average rainfall in August:
1.14" - Average rainfall in September:
0.75" - Average rainfall in October:
1.06" - Average rainfall in November:
0.75" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days
Thomasboro, IL
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
11.7 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
9.6 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall
Thomasboro, IL
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Thomasboro, IL
- Average snowfall days in January:
7.9 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
2.9 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:
1.7 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Thomasboro, 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 24min - 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 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 24min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Thomasboro, IL
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
14.7 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
17.4 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
19.4 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.3 days).
Average UV index
Thomasboro, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Thomasboro, IL
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Thomasboro, 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).





