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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, is another subzero cold winter month in Lockport, Illinois, with an average temperature fluctuating between 29.1°F (-1.6°C) and 17.6°F (-8°C). With its high average temperature of 29.1°F (-1.6°C) and a low of 17.6°F (-8°C), January is regarded as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Lockport, Illinois, with temperature in the range of an average low of 20.5°F (-6.4°C) and an average high of 33.1°F (0.6°C). February denotes a minimal variation in the average high-temperature to a wintry 33.1°F (0.6°C) from January's 29.1°F (-1.6°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Lockport, Illinois, with an average temperature fluctuating between 32°F (0°C) and 46°F (7.8°C). March's arrival signals an increase in average high-temperatures, moving from February's icy 33.1°F (0.6°C) to a chilly 46°F (7.8°C). Weather in March »
Weather in April
April is a moderate spring month in Lockport, Illinois, with temperature in the range of an average high of 57.6°F (14.2°C) and an average low of 41.5°F (5.3°C). April's onset brings a rise in the average high-temperature, moving from a frosty 46°F (7.8°C) in March to a mild 57.6°F (14.2°C). Weather in April »
Weather in May
May, the last month of the spring in Lockport, is a pleasant month, with an average temperature fluctuating between 69.8°F (21°C) and 52.7°F (11.5°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a moderate 57.6°F (14.2°C) to an agreeable 69.8°F (21°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Lockport, Illinois, with an average temperature ranging between min 61.3°F (16.3°C) and max 78.8°F (26°C). June sees a rise in the average high-temperature, climbing from a pleasant 69.8°F (21°C) in May to a warm 78.8°F (26°C). Weather in June »
Weather in July
July, like June, in Lockport, Illinois, is another warm summer month, with an average temperature varying between 65.3°F (18.5°C) and 82°F (27.8°C). In Lockport, Illinois, the highest average temperatures are observed in July, with a high of 82°F (27.8°C) and a low of 65.3°F (18.5°C). The heat index value for July is calculated to be a hot 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Lockport, is another warm month, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 63.9°F (17.7°C). With the onset of August, the average high-temperature stands at a still moderately hot 80.4°F (26.9°C), closely aligned with July's 82°F (27.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Lockport, Illinois, with an average temperature ranging between max 74.3°F (23.5°C) and min 57.4°F (14.1°C). September's onset introduces a mild reduction in the average high-temperature, from a moderately hot 80.4°F (26.9°C) in August to a still warm 74.3°F (23.5°C). Weather in September »
Weather in October
October, like September, in Lockport, Illinois, is another enjoyable autumn month, with an average temperature varying between 45.5°F (7.5°C) and 61.2°F (16.2°C). Lockport's October weather features a mild decline in high-temperatures, reducing from a moderately hot 74.3°F (23.5°C) in September to a refreshing 61.2°F (16.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Lockport, is also a frosty month, with temperature in the range of an average high of 46.9°F (8.3°C) and an average low of 33.6°F (0.9°C). In Lockport, entering November brings a temperature decrement, reducing from October's refreshing 61.2°F (16.2°C) to a chilly 46.9°F (8.3°C). Weather in November »
Weather in December
December, the first month of the winter in Lockport, is also an icy month, with an average temperature varying between 34.9°F (1.6°C) and 25°F (-3.9°C). In the transition to December, Lockport observes a drop in the average high-temperature, moving from a chilly 46.9°F (8.3°C) in November to an icy 34.9°F (1.6°C). Weather in December »
Updated: Jul 1, 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
What is the coldest month?
In Lockport, January is the coldest month, with temperatures averaging a high of 29.1°F (-1.6°C) and a low of 17.6°F (-8°C).
What are the most humid months?
The months with the highest humidity are January and February, with an average relative humidity of 83%.
How many days does it rain?
In Lockport, during the entire year, the rain falls for 103.8 days and collects up to 10.08" (256mm) of precipitation.
When does it snow?
Months with snowfall are January through April, November and December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 9 days and accumulates 1.14" (29mm) of snow.
How many days does it snow?
Throughout the year, there are 30.8 snowfall days, and 4.02" (102mm) of snow is accumulated.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.7h of sunshine.
What are the months with the lowest UV index?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
What is the driest month?
February is the month with the least rainfall. Rain falls for 3.7 days and accumulates 0.47" (12mm) of precipitation.
When is Daylight Saving Time (DST)?
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.
What is the rainiest month?
May is the month with the most rainfall. Rain falls for 11.6 days and accumulates 1.38" (35mm) of precipitation.
When it does not snow?
In Lockport, snow does not fall in May through October.
When are the longest days?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What are the months with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest?
In Lockport, the peak temperatures are generally noted in July, averaging a high of 82°F (27.8°C) and a low of 65.3°F (18.5°C).
What month has the most sunshine?
With an average of 9.9h of sunshine, August has the most sunshine of the year.
What is the least humid month?
October is the least humid month, with an average relative humidity of 73%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Lockport, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.1°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure
Lockport, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"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:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Lockport, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.2mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Lockport, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Lockport, IL
- Average rainfall in January:
0.55" - Average rainfall in February:
0.47" - Average rainfall in March:
0.51" - Average rainfall in April:
0.98" - Average rainfall in May:
1.38" - Average rainfall in June:
1.14"
- Average rainfall in July:
1.22" - Average rainfall in August:
0.98" - Average rainfall in September:
0.87" - Average rainfall in October:
0.94" - Average rainfall in November:
0.51" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is May (1.38").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days
Lockport, IL
- Average rainfall days in January:
4 days - Average rainfall days in February:
3.7 days - Average rainfall days in March:
8.6 days - Average rainfall days in April:
11.5 days - Average rainfall days in May:
11.6 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
10.6 days - Average rainfall days in September:
9.6 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
5.9 days - Average rainfall days in December:
4.5 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (3.7 days).
Average snowfall
Lockport, IL
The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Lockport, IL
- Average snowfall days in January:
9 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
1.4 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:
0.3 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
6.3 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Lockport, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Lockport, IL
- Average sunshine days in January:
21.1 days - Average sunshine days in February:
19.4 days - Average sunshine days in March:
18.8 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
16.1 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
16 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
21.9 days - Average sunshine days in December:
22.3 days
The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is July (13.8 days).
Average UV index
Lockport, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Lockport, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Lockport, IL
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Lockport, Illinois, USA
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