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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Trenton, Illinois, is another cold winter month, with an average temperature fluctuating between 37.8°F (3.2°C) and 24.8°F (-4°C). Temperature records mark January as the coldest month, with highs averaging 37.8°F (3.2°C) and lows at 24.8°F (-4°C). Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Trenton, Illinois, with an average temperature fluctuating between 27.9°F (-2.3°C) and 42.3°F (5.7°C). February's arrival brings an average high-temperature of a still wintry 42.3°F (5.7°C), slightly deviating from January's 37.8°F (3.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Trenton, Illinois, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 37.9°F (3.3°C). The transition from February to March brings a temperature rise, with average high-temperatures increasing from an icy 42.3°F (5.7°C) to a cool 54.1°F (12.3°C). Weather in March »
Weather in April
April is a comfortable spring month in Trenton, Illinois, with an average temperature varying between 64.9°F (18.3°C) and 47.7°F (8.7°C). The arrival of April signals an increase in the average high-temperature, moving from a cool 54.1°F (12.3°C) in March to a comfortable 64.9°F (18.3°C). Weather in April »
Weather in May
May, the last month of the spring in Trenton, is a warm month, with an average temperature varying between 57.7°F (14.3°C) and 74.7°F (23.7°C). An escalation in the average high-temperature is seen with the onset of May, moving from a refreshing 64.9°F (18.3°C) in April to a warm 74.7°F (23.7°C). Weather in May »
Weather in June
June, the first month of the summer in Trenton, is also a moderately hot month, with an average temperature ranging between min 66.4°F (19.1°C) and max 83.5°F (28.6°C). With the onset of June, Trenton's weather sees a minor temperature rise, transitioning from 74.7°F (23.7°C) in May to a still moderately hot 83.5°F (28.6°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Trenton, Illinois, with an average temperature ranging between min 68°F (20°C) and max 85.6°F (29.8°C). July, noted for its average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 68°F (20°C), is considered the warmest month. The heat index for July is calculated to be a torrid 98.6°F (37°C). Weather in July »
Weather in August
August, the last month of the summer in Trenton, is another warm month, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 65.8°F (18.8°C). The transition from July to August brings an average high-temperature of a still moderately hot 83.8°F (28.8°C), barely different from July's 85.6°F (29.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Trenton, is still a warm month, with temperature in the range of an average high of 78.8°F (26°C) and an average low of 59.9°F (15.5°C). Trenton signifies an average high-temperature of a still warm 78.8°F (26°C) in September, closely mirroring the 83.8°F (28.8°C) of August. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Trenton, Illinois, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 49.1°F (9.5°C). The beginning of October involves a decrease in the average high-temperature, transitioning from a moderately hot 78.8°F (26°C) in September to a comfortable 66.4°F (19.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Trenton, Illinois, with temperature in the range of an average high of 52.9°F (11.6°C) and an average low of 37.8°F (3.2°C). The onset of November entails a temperature shift, as the average high-temperature decreases from a refreshing 66.4°F (19.1°C) in October to a cool 52.9°F (11.6°C). Weather in November »
Weather in December
December, the first month of the winter in Trenton, is still a cold month, with temperature in the range of an average high of 42.3°F (5.7°C) and an average low of 30.2°F (-1°C). During Trenton's transition into December, the average high-temperature lessens, moving from a fresh 52.9°F (11.6°C) in November to a wintry 42.3°F (5.7°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Trenton?
The coldest period in Trenton, Illinois, tends to be January, when average temperatures fluctuate between a high of 37.8°F (3.2°C) and a low of 24.8°F (-4°C).
How many days does it rain in Trenton?
In Trenton, Illinois, during the entire year, the rain falls for 151.1 days and collects up to 30.43" (773mm) of precipitation.
When does it snow in Trenton?
Months with snowfall are January through April, October through December.
How much does it snow in Trenton?
In Trenton, Illinois, during the entire year, snow falls for 22.4 days and aggregates up to 6.1" (155mm) of snow.
What are the months with the least sunshine in Trenton?
The months with the least sunshine are January and February, with an average of 4.6h of sunshine.
What is the month with the lowest UV index in Trenton?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month in Trenton?
The month with the least rainfall in Trenton, Illinois, is February, when the rain falls for 8.9 days and typically collects 1.5" (38mm) of precipitation.
When does it snow the most in Trenton?
The month with the most snowfall in Trenton is February, when snow falls for 6.3 days and typically aggregates up to 1.85" (47mm) of snow.
When is Daylight Saving Time (DST) in Trenton?
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.
When it does not snow in Trenton?
In Trenton, snow does not fall in May through September.
When is the highest UV index in Trenton?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Trenton, Illinois.
What is the rainiest month in Trenton?
The month with the most rainfall in Trenton is June, when the rain falls for 16.2 days and typically aggregates up to 3.66" (93mm) of precipitation.
When are the longest days in Trenton?
June has the longest days of the year, with an average of 14h and 48min of daylight.
What month has the most sunshine in Trenton?
The month with the most sunshine is June, with an average of 10.5h of sunshine.
What is the warmest month in Trenton?
With average temperatures fluctuating between a high of 85.6°F (29.8°C) and a low of 68°F (20°C), July stands out as the warmest month.
What is the most humid month in Trenton?
With an average relative humidity of 80%, July is the most humid month in Trenton, Illinois.
What is the least humid month in Trenton?
The least humid month in Trenton, Illinois, is October, with an average relative humidity of 71%.
What is the month with the shortest days in Trenton?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Trenton, IL
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure
Trenton, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"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 (29.93"Hg).
Average wind speed
Trenton, IL
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.5mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.2mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
8mph - Average wind speed in November:
8.7mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Trenton, IL
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Trenton, IL
- Average rainfall in January:
1.89" - Average rainfall in February:
1.5" - Average rainfall in March:
2.28" - Average rainfall in April:
3.43" - Average rainfall in May:
3.58" - Average rainfall in June:
3.66"
- Average rainfall in July:
3.31" - Average rainfall in August:
3.07" - Average rainfall in September:
1.77" - Average rainfall in October:
2.32" - Average rainfall in November:
1.73" - Average rainfall in December:
1.89"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days
Trenton, IL
- Average rainfall days in January:
8 days - Average rainfall days in February:
8.9 days - Average rainfall days in March:
14.3 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
12 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8 days).
Average snowfall
Trenton, IL
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Trenton, IL
- Average snowfall days in January:
7.5 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.3 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:
0.1 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Trenton, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
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).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Trenton, IL
- Average sunshine days in January:
16.4 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
13 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
18 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11 days).
Average UV index
Trenton, 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, November and December (UV index 2).
Average cloud cover
Trenton, IL
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility
Trenton, 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).
Trenton, Illinois, USA
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