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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, the same as December, is an icy winter month in Troy, Illinois, with temperature in the range of an average high of 37.4°F (3°C) and an average low of 24.3°F (-4.3°C). The lowest temperatures are recorded in January, with averages reaching a high of 37.4°F (3°C) and a low of 24.3°F (-4.3°C). Weather in January »
Weather in February
February, the last month of the winter in Troy, is another cold month, with temperature in the range of an average low of 27.5°F (-2.5°C) and an average high of 42.1°F (5.6°C). With February's arrival, Troy's weather records an average high-temperature of a still wintry 42.1°F (5.6°C), marking little difference from January's 37.4°F (3°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Troy, Illinois, with an average temperature ranging between max 54.1°F (12.3°C) and min 37.8°F (3.2°C). With the onset of March, Troy experiences a temperature shift, with the average high-temperature moving from a wintry 42.1°F (5.6°C) in February to a cool 54.1°F (12.3°C). Weather in March »
Weather in April
April in Troy, Illinois, is an enjoyable spring month, with an average temperature varying between 64.9°F (18.3°C) and 47.8°F (8.8°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a fresh 54.1°F (12.3°C) to a comfortable 64.9°F (18.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Troy, Illinois, with an average temperature varying between 74.5°F (23.6°C) and 57.6°F (14.2°C). May's arrival brings a temperature shift, moving from an enjoyable 64.9°F (18.3°C) in April to a moderately hot 74.5°F (23.6°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Troy, Illinois, with an average temperature ranging between max 83.3°F (28.5°C) and min 66.6°F (19.2°C). With the start of June, the average high-temperature marginally shifts from May's 74.5°F (23.6°C) to a still warm 83.3°F (28.5°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Troy, Illinois, with an average temperature varying between 85.6°F (29.8°C) and 68.2°F (20.1°C). July stands out as Troy's warmest month, with an average high-temperature of 85.6°F (29.8°C) and a low-temperature of 68.2°F (20.1°C). In July, the heat index is appraised at a fiery hot 98.6°F (37°C). Weather in July »
Weather in August
August, the last month of the summer in Troy, is another warm month, with an average temperature ranging between min 66°F (18.9°C) and max 84°F (28.9°C). With the onset of August, the average high-temperature registers at a still warm 84°F (28.9°C), subtly different from July's 85.6°F (29.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Troy, Illinois, with an average temperature fluctuating between 79°F (26.1°C) and 59.9°F (15.5°C). The high-temperature average in September for Troy is a still moderately hot 79°F (26.1°C), staying closely aligned with August's conditions. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Troy, Illinois, with an average temperature varying between 66°F (18.9°C) and 48.9°F (9.4°C). In Troy, the average high-temperature in October decreases from a moderately hot 79°F (26.1°C) in September to a refreshing 66°F (18.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Troy, Illinois, with an average temperature fluctuating between 37.6°F (3.1°C) and 52.9°F (11.6°C). November comes with a drop in the average high-temperature, falling from October's enjoyable 66°F (18.9°C) to a fresh 52.9°F (11.6°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Troy, Illinois, with an average temperature fluctuating between 30°F (-1.1°C) and 41.9°F (5.5°C). December brings a decrease in the average high-temperature, shifting from a cool 52.9°F (11.6°C) in November to a wintry 41.9°F (5.5°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Troy?
During the coldest month in Troy, January, temperatures average a high of 37.4°F (3°C) and a low of 24.3°F (-4.3°C).
How much does it rain in Troy?
Throughout the year, in Troy, Illinois, there are 149.9 rainfall days, and 33.94" (862mm) of precipitation is accumulated.
When does it snow in Troy?
January through March, September, November and December are months with snowfall.
When does it snow the most in Troy?
January is the month with the most snowfall in Troy, Illinois. Snow falls for 7 days and accumulates 2.13" (54mm) of snow.
How many days does it snow in Troy?
In Troy, during the entire year, snow falls for 20.7 days and aggregates up to 7.13" (181mm) of snow.
What is the month with the least sunshine in Troy?
The month with the least sunshine is January, with an average of 4.5h of sunshine.
What is the month with the lowest UV index in Troy?
The months with the lowest UV index in Troy are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Troy?
The month with the least rainfall in Troy is February, when the rain falls for 8.3 days and typically collects 1.77" (45mm) of precipitation.
When is Daylight Saving Time (DST) in Troy?
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 Troy?
April through August and October are months without snowfall in Troy.
What is the most humid month in Troy?
May, July and August, with an average relative humidity of 79%, are most humid months in Troy, Illinois.
What is the wettest month in Troy?
May is the month with the most rainfall in Troy. Rain falls for 17.1 days and accumulates 4.17" (106mm) of precipitation.
What are the months with the highest UV index in Troy?
The months with the highest UV index in Troy are May through August, with an average maximum UV index of 6.
When are the longest days in Troy?
With an average of 14h and 48min of daylight, June has the longest days of the year in Troy, Illinois.
What month has the most sunshine in Troy?
June has the most sunshine of the year in Troy, Illinois, with an average of 10.5h of sunshine.
What part of the year is the hottest in Troy?
July is the month when Troy sees the average highest temperatures, with a high of 85.6°F (29.8°C) and a low of 68.2°F (20.1°C).
What is the least humid month in Troy?
The least humid month in Troy is October, with an average relative humidity of 71%.
What is the month with the shortest days in Troy?
With an average of 9h and 30min of daylight, December has the shortest days of the year in Troy.
Average temperature
Troy, 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 (37.4°F).
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Troy, 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:
29.92"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:
30.12"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
Troy, IL
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.6mph - 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 (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity
Troy, IL
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Troy, IL
- Average rainfall in January:
2.2" - Average rainfall in February:
1.77" - Average rainfall in March:
2.6" - Average rainfall in April:
3.5" - Average rainfall in May:
4.17" - Average rainfall in June:
3.9"
- Average rainfall in July:
3.31" - Average rainfall in August:
3.35" - Average rainfall in September:
2.13" - Average rainfall in October:
2.76" - Average rainfall in November:
2.05" - Average rainfall in December:
2.2"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days
Troy, IL
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
13.9 days - Average rainfall days in April:
15.4 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
15.5 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
8.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (7.8 days).
Average snowfall
Troy, IL
The month with the highest snowfall is January (2.13").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days
Troy, IL
- Average snowfall days in January:
7 days - Average snowfall days in February:
6 days - Average snowfall days in March:
2.2 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:
0.1 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
1.2 days - Average snowfall days in December:
3.8 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight / Average sunshine
Troy, 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 4min - 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 3min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 3min - 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 1min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Troy, IL
- Average sunshine days in January:
17 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.1 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
12.7 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is May (11.6 days).
Average UV index
Troy, 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
Troy, IL
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility
Troy, 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).
Troy, Illinois, USA
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