Climate and monthly weather forecastSmithboro, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Smithboro, Illinois, is a wintry winter month, with an average temperature varying between 23.4°F (-4.8°C) and 36.1°F (2.3°C). January is the month that records the lowest temperatures, with averages ranging from a high of 36.1°F (2.3°C) to a low of 23.4°F (-4.8°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Smithboro, Illinois, with temperature in the range of an average high of 41°F (5°C) and an average low of 27°F (-2.8°C). As Smithboro transitions into February, the average high-temperature stands at a still wintry 41°F (5°C), offering little variation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Smithboro, is a fresh month, with an average temperature ranging between min 37°F (2.8°C) and max 53.1°F (11.7°C). The shift into March is characterized by a rise in the average high-temperature, transitioning from February's cold 41°F (5°C) to a cool 53.1°F (11.7°C). Weather in March »Weather in April
April in Smithboro, Illinois, is a comfortable spring month, with an average temperature fluctuating between 46.9°F (8.3°C) and 63.9°F (17.7°C). April brings a rise in Smithboro's average high-temperature, moving from a cool 53.1°F (11.7°C) in March to a refreshing 63.9°F (17.7°C). Weather in April »Weather in May
May, the last month of the spring in Smithboro, is a warm month, with an average temperature fluctuating between 56.8°F (13.8°C) and 73.9°F (23.3°C). May's arrival signals an increase in average high-temperatures, moving from April's comfortable 63.9°F (17.7°C) to a moderately hot 73.9°F (23.3°C). Weather in May »Weather in June
June, the first month of the summer in Smithboro, is also a moderately hot month, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 65.8°F (18.8°C). June brings an increase in the average high-temperature, progressing from 73.9°F (23.3°C) in May to a still warm 82.9°F (28.3°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Smithboro, Illinois, with an average temperature fluctuating between 84.4°F (29.1°C) and 67.5°F (19.7°C). Smithboro's warmest month, July, registers temperatures that range from a high of 84.4°F (29.1°C) to a low of 67.5°F (19.7°C). July's average heat index is appraised at a fiery hot 95°F (35°C). Weather in July »Weather in August
August, the last month of the summer in Smithboro, is another warm month, with an average temperature fluctuating between 82.9°F (28.3°C) and 65.1°F (18.4°C). August denotes a minimal variation in the average high-temperature to a still moderately hot 82.9°F (28.3°C) from July's 84.4°F (29.1°C). Weather in August »Weather in September
September, the first month of the autumn in Smithboro, is still a warm month, with an average temperature ranging between min 59.5°F (15.3°C) and max 77.9°F (25.5°C). September's arrival registers an average high-temperature of a still warm 77.9°F (25.5°C), closely aligning with the temperature of the previous month. Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Smithboro, Illinois, with an average temperature varying between 48.7°F (9.3°C) and 65.3°F (18.5°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a warm 77.9°F (25.5°C) to a comfortable 65.3°F (18.5°C). Weather in October »Weather in November
November, the last month of the autumn in Smithboro, is another cool month, with an average temperature varying between 51.8°F (11°C) and 37.2°F (2.9°C). The commencement of November indicates a shift in the average high-temperature, receding from October's refreshing 65.3°F (18.5°C) to a cool 51.8°F (11°C). Weather in November »Weather in December
December, the first month of the winter in Smithboro, is also a wintry month, with temperature in the range of an average low of 29.8°F (-1.2°C) and an average high of 41.5°F (5.3°C). With December's arrival, Smithboro's weather changes as the average high-temperature falls from a cool 51.8°F (11°C) in November to a wintry 41.5°F (5.3°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
January is the coldest month in Smithboro, exhibiting average temperatures of 36.1°F (2.3°C) at the peak and 23.4°F (-4.8°C) at the base.
In Smithboro, during the entire year, the rain falls for 137.9 days and collects up to 24.88" (632mm) of precipitation.
January through March, November and December are months with snowfall in Smithboro.
In Smithboro, during the entire year, snow falls for 18.3 days and aggregates up to 6.22" (158mm) of snow.
January and February, with an average of 4.5h of sunshine, are months with the least sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Smithboro, Illinois.
The month with the least rainfall is February, when the rain falls for 7.3 days and typically collects 1.26" (32mm) of precipitation.
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 Smithboro, Illinois, snow does not fall in April through October.
The month with the most rainfall in Smithboro is June, when the rain falls for 14.9 days and typically aggregates up to 3.43" (87mm) of precipitation.
With an average of 14h and 54min of daylight, June has the longest days of the year in Smithboro.
With an average of 10.4h of sunshine, June has the most sunshine of the year in Smithboro.
The months with the highest UV index in Smithboro, Illinois, are June through August, with an average maximum UV index of 6.
July, noted for its average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 67.5°F (19.7°C), is considered the warmest month.
The most humid month in Smithboro is July, with an average relative humidity of 81%.
October is the least humid month, with an average relative humidity of 71%.
The month with the most snowfall is December, when snow falls for 4.1 days and typically aggregates up to 1.89" (48mm) of snow.
The month with the shortest days in Smithboro, Illinois, is December, with an average of 9h and 30min of daylight.
Average temperature
Smithboro, IL
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (36.1°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Smithboro, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"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:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Smithboro, IL
- Average wind speed in January:
10mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.6mph - Average wind speed in May:
7.9mph - Average wind speed in June:
6.9mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.4mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity
Smithboro, IL
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Smithboro, IL
- Average rainfall in January:
1.5" - Average rainfall in February:
1.26" - Average rainfall in March:
1.89" - Average rainfall in April:
2.72" - Average rainfall in May:
2.83" - Average rainfall in June:
3.43"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days
Smithboro, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
12.2 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
9.8 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
7.2 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (6.3 days).
Average snowfall
Smithboro, IL
The month with the highest snowfall is December (1.89").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Smithboro, IL
- Average snowfall days in January:
5.8 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
2 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:
0.1 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
4.1 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Smithboro, IL
- Average daylight in January:
9h and 48min - 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 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days
Smithboro, IL
- Average sunshine days in January:
19.7 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
14.1 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
12.7 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
20 days
The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (11.8 days).
Average UV index
Smithboro, 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
Smithboro, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility
Smithboro, 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).
