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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 Joliett, Pennsylvania, is an icy winter month, with an average temperature ranging between max 33.4°F (0.8°C) and min 20.7°F (-6.3°C). January, marked by an average high-temperature of 33.4°F (0.8°C) and a low-temperature of 20.7°F (-6.3°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Joliett, is another cold month, with an average temperature ranging between min 22.5°F (-5.3°C) and max 36.9°F (2.7°C). With the arrival of February, Joliett's average high-temperature registers at a still icy 36.9°F (2.7°C), indicating a subtle variation from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Joliett, is a chilly month, with temperature in the range of an average low of 30.2°F (-1°C) and an average high of 46°F (7.8°C). As March sets, the average high-temperature shows an increase, moving up from a cold 36.9°F (2.7°C) in February to a frosty 46°F (7.8°C). Weather in March »
Weather in April
April in Joliett, Pennsylvania, is a moderate spring month, with an average temperature fluctuating between 40.3°F (4.6°C) and 58.1°F (14.5°C). April's arrival brings a temperature shift, moving from a chilly 46°F (7.8°C) in March to a refreshing 58.1°F (14.5°C). Weather in April »
Weather in May
May, the last month of the spring in Joliett, is an agreeable month, with an average temperature ranging between max 68.5°F (20.3°C) and min 50.2°F (10.1°C). With the onset of May, Joliett sees a temperature rise, with the average high-temperature moving from April's mild 58.1°F (14.5°C) to an agreeable 68.5°F (20.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Joliett, Pennsylvania, with an average temperature fluctuating between 57°F (13.9°C) and 76.5°F (24.7°C). Joliett experiences a minor temperature shift with the start of June, with average high-temperatures moving from an agreeable 68.5°F (20.3°C) in May to a warm 76.5°F (24.7°C). Weather in June »
Weather in July
July, like June, in Joliett, Pennsylvania, is another warm summer month, with an average temperature ranging between min 62.1°F (16.7°C) and max 81.5°F (27.5°C). The temperatures reach their highest averages in July, with highs of 81.5°F (27.5°C) and lows of 62.1°F (16.7°C). For July, the heat index is appraised at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Joliett, Pennsylvania, with an average temperature ranging between min 60.3°F (15.7°C) and max 79.5°F (26.4°C). Joliett greets August with an average high-temperature of a still warm 79.5°F (26.4°C), marking a slight deviation from the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Joliett, Pennsylvania, with an average temperature varying between 54.1°F (12.3°C) and 73.2°F (22.9°C). The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a moderately hot 79.5°F (26.4°C) in August to an agreeable 73.2°F (22.9°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Joliett, Pennsylvania, with an average temperature varying between 61.5°F (16.4°C) and 45.3°F (7.4°C). October comes with a decrease in the average high-temperature, falling from a pleasant 73.2°F (22.9°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Joliett, is also a frosty month, with temperature in the range of an average low of 34.5°F (1.4°C) and an average high of 48.7°F (9.3°C). The commencement of November indicates a shift in the average high-temperature, receding from October's enjoyable 61.5°F (16.4°C) to a frosty 48.7°F (9.3°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Joliett, Pennsylvania, with an average temperature ranging between max 39.7°F (4.3°C) and min 28.2°F (-2.1°C). Welcoming December, Joliett observes a shift in the average high-temperature, falling from November's chilly 48.7°F (9.3°C) to a cold 39.7°F (4.3°C). Weather in December »
Updated: Aug 29, 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 month is the coldest?
Joliett's January weather, marked by an average high temperature of 33.4°F (0.8°C) and an average low temperature of 20.7°F (-6.3°C), is the coldest in the year.
How many days does it rain?
Throughout the year, there are 133.5 rainfall days, and 15.16" (385mm) of precipitation is accumulated.
When does it snow in Joliett?
Months with snowfall are January through May, October through December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 6.9 days and accumulates 1.77" (45mm) of snow.
How much does it snow?
In Joliett, during the entire year, snow falls for 23.2 days and aggregates up to 5.67" (144mm) of snow.
What are the months with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month?
The most humid month is February, with an average relative humidity of 82%.
What is the driest month in Joliett?
The month with the least rainfall in Joliett is February, when the rain falls for 8 days and typically collects 0.83" (21mm) of precipitation.
What is the month with the least sunshine?
With an average of 4.3h of sunshine, February has the least sunshine of the year.
What is the least humid month?
The months with the lowest humidity are March and April, with an average relative humidity of 77%.
When is Daylight Saving Time (DST) in Joliett?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Joliett, Pennsylvania, 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.
When it does not snow?
In Joliett, snow does not fall in June through September.
When are the longest days?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What is the month with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What is the warmest month?
Joliett's temperature records reveal July as the warmest month, marked by average highs of 81.5°F (27.5°C) and lows of 62.1°F (16.7°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.2h of sunshine.
What is the rainiest month?
August is the month with the most rainfall. Rain falls for 13.6 days and accumulates 1.93" (49mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Joliett, PA
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (33.4°F).
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure
Joliett, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.03"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 (29.94"Hg).
Average wind speed
Joliett, PA
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.3mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.8mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Joliett, PA
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall
Joliett, PA
- Average rainfall in January:
0.98" - Average rainfall in February:
0.83" - Average rainfall in March:
1.06" - Average rainfall in April:
1.26" - Average rainfall in May:
1.61" - Average rainfall in June:
1.3"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.93" - Average rainfall in September:
0.87" - Average rainfall in October:
1.3" - Average rainfall in November:
1.18" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days
Joliett, PA
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
8 days - Average rainfall days in March:
10.7 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
9.6 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (6.8 days).
Average snowfall
Joliett, PA
The month with the highest snowfall is January (1.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Joliett, PA
- Average snowfall days in January:
6.9 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
4 days - Average snowfall days in April:
0.6 days - Average snowfall days in May:
0.2 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:
1.2 days - Average snowfall days in December:
3.9 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Joliett, PA
- 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 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - 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 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 0min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 1min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days
Joliett, PA
- Average sunshine days in January:
20.8 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
16.5 days - Average sunshine days in April:
15.1 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
14.5 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
17.1 days - Average sunshine days in November:
19.8 days - Average sunshine days in December:
18.3 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is May (12.7 days).
Average UV index
Joliett, PA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Joliett, PA
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility
Joliett, PA
The months with the highest visibility are January, March, April, June, November and December (6mi).
The months with the lowest visibility are February, May, July, August, September and October (5mi).
Joliett, Pennsylvania, USA
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