Climate and monthly weather forecastLemont, PA
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Lemont, Pennsylvania, with an average temperature ranging between min 18.7°F (-7.4°C) and max 31.1°F (-0.5°C). With an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 18.7°F (-7.4°C), January is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is an icy month in Lemont, Pennsylvania, with an average temperature ranging between min 21°F (-6.1°C) and max 35.2°F (1.8°C). Lemont signifies an average high-temperature of a wintry 35.2°F (1.8°C) in February, closely mirroring the 31.1°F (-0.5°C) of January. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Lemont, Pennsylvania, with an average temperature fluctuating between 44.8°F (7.1°C) and 28.4°F (-2°C). The transition from February to March brings a temperature rise, with average high-temperatures increasing from a wintry 35.2°F (1.8°C) to a chilly 44.8°F (7.1°C). Weather in March »Weather in April
April in Lemont, Pennsylvania, is a refreshing spring month, with an average temperature fluctuating between 38.1°F (3.4°C) and 57°F (13.9°C). Entering April, Lemont sees a temperature rise, with the average high-temperature advancing from March's chilly 44.8°F (7.1°C) to a refreshing 57°F (13.9°C). Weather in April »Weather in May
May, the last month of the spring in Lemont, is a pleasant month, with an average temperature fluctuating between 69.1°F (20.6°C) and 48.2°F (9°C). Lemont's May weather shows an increase in high-temperatures, moving from April's moderate 57°F (13.9°C) to an agreeable 69.1°F (20.6°C). Weather in May »Weather in June
June, the first month of the summer in Lemont, is a moderately hot month, with an average temperature ranging between min 55°F (12.8°C) and max 77°F (25°C). Lemont's weather shows a minor temperature rise with the arrival of June, moving from an agreeable 69.1°F (20.6°C) in May to a moderately hot 77°F (25°C). Weather in June »Weather in July
July, like June, in Lemont, Pennsylvania, is a moderately hot summer month, with an average temperature ranging between max 82.2°F (27.9°C) and min 59.2°F (15.1°C). With average high and low temperatures of 82.2°F (27.9°C) and 59.2°F (15.1°C) respectively, July is Lemont's warmest month. In July, the average heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Lemont, is another warm month, with an average temperature fluctuating between 57.4°F (14.1°C) and 79.9°F (26.6°C). Lemont starts August with an average high-temperature of a still moderately hot 79.9°F (26.6°C), a minor shift from July's 82.2°F (27.9°C). Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Lemont, Pennsylvania, with an average temperature varying between 72.5°F (22.5°C) and 52.2°F (11.2°C). September sees a slight reduction in average high-temperature, with a shift from a moderately hot 79.9°F (26.6°C) in August to a pleasant 72.5°F (22.5°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Lemont, Pennsylvania, with an average temperature fluctuating between 59.9°F (15.5°C) and 43.2°F (6.2°C). Onset of October comes with a temperature decline, the average high falling from a pleasant 72.5°F (22.5°C) in September to a mild 59.9°F (15.5°C). Weather in October »Weather in November
November, the last month of the autumn in Lemont, is also a frosty month, with an average temperature fluctuating between 32.4°F (0.2°C) and 46.8°F (8.2°C). The start of November involves a temperature drop, moving from a refreshing 59.9°F (15.5°C) in October to a chilly 46.8°F (8.2°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Lemont, Pennsylvania, with an average temperature varying between 36.9°F (2.7°C) and 26.4°F (-3.1°C). The onset of December brings a small change in high-temperatures, falling from a chilly 46.8°F (8.2°C) in November to an icy 36.9°F (2.7°C). Weather in December »Updated: Jun 13, 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
Lemont records the coldest temperatures in January, averaging a high of 31.1°F (-0.5°C) and a low of 18.7°F (-7.4°C).
Throughout the year, there are 175.7 rainfall days, and 30.94" (786mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
In Lemont, during the entire year, snow falls for 59 days and aggregates up to 26.3" (668mm) of snow.
The month with the least sunshine is January, with an average of 3.6h of sunshine.
The months with the highest humidity in Lemont are February and December, with an average relative humidity of 84%.
February is the month with the most snowfall. Snow falls for 14 days and accumulates 6.77" (172mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May is the month with the most rainfall. Rain falls for 19.4 days and accumulates 3.5" (89mm) of precipitation.
The months with the highest UV index are May through August, with an average maximum UV index of 5.
June through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 6min of daylight.
July, with an average high of 82.2°F (27.9°C) and a low of 59.2°F (15.1°C), signifies the warmest month of the year.
July is the least humid month, with an average relative humidity of 76%.
July has the most sunshine of the year, with an average of 10.1h of sunshine.
November is the month with the least rainfall. Rain falls for 12.3 days and accumulates 2.01" (51mm) of precipitation.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Lemont, PA
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.1°F).
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure
Lemont, PA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Lemont, PA
- Average wind speed in January:
8mph - Average wind speed in February:
7.7mph - Average wind speed in March:
7.5mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.3mph - Average wind speed in June:
6mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.2mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.8mph - Average wind speed in December:
7.4mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Lemont, PA
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall
Lemont, PA
- Average rainfall in January:
2.28" - Average rainfall in February:
2.32" - Average rainfall in March:
2.44" - Average rainfall in April:
3.23" - Average rainfall in May:
3.5" - Average rainfall in June:
2.6"
- Average rainfall in July:
2.72" - Average rainfall in August:
2.32" - Average rainfall in September:
2.24" - Average rainfall in October:
2.76" - Average rainfall in November:
2.01" - Average rainfall in December:
2.52"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days
Lemont, PA
- Average rainfall days in January:
10.5 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
14.6 days - Average rainfall days in April:
17.8 days - Average rainfall days in May:
19.4 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
18.3 days - Average rainfall days in August:
15.5 days - Average rainfall days in September:
13.8 days - Average rainfall days in October:
14.8 days - Average rainfall days in November:
12.3 days - Average rainfall days in December:
12.6 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is February (9.8 days).
Average snowfall
Lemont, PA
- Average snowfall in January:
6.57" - Average snowfall in February:
6.77" - Average snowfall in March:
4.29" - Average snowfall in April:
0.79" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (6.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Lemont, PA
- Average snowfall days in January:
15.3 days - Average snowfall days in February:
14 days - Average snowfall days in March:
9.3 days - Average snowfall days in April:
2.1 days - Average snowfall days in May:
0.3 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:
0.8 days - Average snowfall days in November:
5.7 days - Average snowfall days in December:
11.5 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Lemont, PA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 18min).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 42min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 12min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 6min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Lemont, PA
- Average sunshine days in January:
9.5 days - Average sunshine days in February:
8.5 days - Average sunshine days in March:
10.5 days - Average sunshine days in April:
10 days - Average sunshine days in May:
9.2 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
11.4 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
13.7 days - Average sunshine days in October:
13.5 days - Average sunshine days in November:
14.5 days - Average sunshine days in December:
12 days
The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is February (8.5 days).
Average UV index
Lemont, PA
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Lemont, PA
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility
Lemont, PA
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
