Climate and monthly weather forecast
Smithton, IL

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Weather in January

January, the same as December, is an icy winter month in Smithton, Illinois, with an average temperature varying between 25°F (-3.9°C) and 38.1°F (3.4°C). January, on average, is the coldest month, registering a high temperature of 38.1°F (3.4°C) and a low of 25°F (-3.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Smithton, Illinois, with an average temperature ranging between max 42.4°F (5.8°C) and min 27.9°F (-2.3°C). The shift into February records an average high-temperature of a still cold 42.4°F (5.8°C), subtly varied from January's 38.1°F (3.4°C). Weather in February »

Weather in March

March, the first month of the spring in Smithton, is a fresh month, with an average temperature varying between 37.9°F (3.3°C) and 54.5°F (12.5°C). Smithton in March sees a temperature change, with average high-temperatures moving from an icy 42.4°F (5.8°C) in February to a fresh 54.5°F (12.5°C). Weather in March »

Weather in April

April is a refreshing spring month in Smithton, Illinois, with an average temperature varying between 65.5°F (18.6°C) and 47.8°F (8.8°C). With the arrival of April, the average high-temperature transitions from a fresh 54.5°F (12.5°C) in March to a refreshing 65.5°F (18.6°C). Weather in April »

Weather in May

May, the last month of the spring in Smithton, is a moderately hot month, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 75°F (23.9°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a comfortable 65.5°F (18.6°C) to a moderately hot 75°F (23.9°C). Weather in May »

Weather in June

June, the first month of the summer in Smithton, is also a moderately hot month, with an average temperature varying between 83.7°F (28.7°C) and 66.6°F (19.2°C). June brings a slight rise in Smithton's average high-temperature, moving from a warm 75°F (23.9°C) in May to a still moderately hot 83.7°F (28.7°C). Weather in June »

Weather in July

July is a hot summer month in Smithton, Illinois, with an average temperature fluctuating between 68.5°F (20.3°C) and 86.5°F (30.3°C). July is the warmest month of the year, registering average temperatures as high as 86.5°F (30.3°C) and as low as 68.5°F (20.3°C). In July, the average heat index is calculated to be a sweltering 100.4°F (38°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Smithton, Illinois, with an average temperature ranging between max 84.6°F (29.2°C) and min 65.8°F (18.8°C). August ushers in an average high-temperature of a moderately hot 84.6°F (29.2°C), aligning closely with the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Smithton, is also a moderately hot month, with an average temperature fluctuating between 60.1°F (15.6°C) and 79.3°F (26.3°C). Entering September, the average high-temperature is recorded at a still moderately hot 79.3°F (26.3°C), exhibiting a minimal shift from August's 84.6°F (29.2°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Smithton, Illinois, with an average temperature fluctuating between 49.1°F (9.5°C) and 66.7°F (19.3°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a moderately hot 79.3°F (26.3°C) to an enjoyable 66.7°F (19.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Smithton, is another cool month, with temperature in the range of an average low of 37.9°F (3.3°C) and an average high of 53.4°F (11.9°C). A moderate decline in the average high-temperature is seen during November, decreasing from a comfortable 66.7°F (19.3°C) in October to a fresh 53.4°F (11.9°C). Weather in November »

Weather in December

December, the first month of the winter in Smithton, is also a frosty month, with an average temperature fluctuating between 43°F (6.1°C) and 30.7°F (-0.7°C). A shift in Smithton's weather is observed as November turns into December, with the average high temperature reducing from a fresh 53.4°F (11.9°C) to a frosty 43°F (6.1°C). Weather in December »
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Smithton's coldest temperatures are experienced in January, with average high temperatures of 38.1°F (3.4°C) and lows of 25°F (-3.9°C).

How much does it rain?

In Smithton, during the entire year, the rain falls for 103.8 days and collects up to 10.24" (260mm) of precipitation.

When does it snow in Smithton?

Months with snowfall are January through March, November and December.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 4.3 days and accumulates 0.63" (16mm) of snow.

How many days does it snow?

Throughout the year, there are 12.9 snowfall days, and 1.77" (45mm) of snow is accumulated.

What is the month with the least sunshine?

With an average of 4.6h of sunshine, January has the least sunshine of the year.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Smithton, 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.

When it does not snow?

April through October are months without snowfall.

What are the most humid months?

May and July, with an average relative humidity of 79%, are most humid months in Smithton.

What is the rainiest month?

The month with the most rainfall is May, when the rain falls for 12.1 days and typically aggregates up to 1.34" (34mm) of precipitation.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

When are the longest days?

The month with the longest days is June, with an average of 14h and 48min of daylight.

What is the month with the most sunshine in Smithton?

June and July, with an average of 10.4h of sunshine, are months with the most sunshine in Smithton.

What part of the year is the hottest?

In Smithton, Illinois, the peak temperatures are generally noted in July, averaging a high of 86.5°F (30.3°C) and a low of 68.5°F (20.3°C).

What is the driest month?

The month with the least rainfall is September, when the rain falls for 8.1 days and typically collects 0.47" (12mm) of precipitation.

What is the least humid month?

The least humid month is October, with an average relative humidity of 71%.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

Average temperature
Smithton, IL

Average temperature - Smithton, IL

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.1°F).

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure
Smithton, IL

Average pressure - Smithton, IL

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Smithton, IL

Average wind speed - Smithton, IL

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

Average humidity
Smithton, IL

Average humidity - Smithton, IL

The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall
Smithton, IL

Average rainfall - Smithton, IL

The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is September (0.47").

Average rainfall days
Smithton, IL

Average rainfall days - Smithton, IL

The month with the highest number of rainy days is July (12.2 days).
The month with the least rainy days is December (5.3 days).

Average snowfall
Smithton, IL

Average snowfall - Smithton, IL

The month with the highest snowfall is January (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Smithton, IL

Average snowfall days - Smithton, IL

The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Smithton, IL

Average daylight / Average sunshine - Smithton, IL

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days
Smithton, IL

Average sunshine days - Smithton, IL

The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is July (15.1 days).

Average UV index
Smithton, IL

Average UV index - Smithton, 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, February and December (UV index 2).

Average visibility
Smithton, IL

Average visibility - Smithton, 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).

Smithton, Illinois, USA

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