Expand
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, in Pontoosuc, Illinois, is a freezing cold winter month, with an average temperature varying between 30.4°F (-0.9°C) and 18.5°F (-7.5°C). January stands out as Pontoosuc's coldest month, with an average high-temperature of 30.4°F (-0.9°C) and a low-temperature of 18.5°F (-7.5°C). Weather in January »
Weather in February
February, the last month of the winter in Pontoosuc, is a cold month, with temperature in the range of an average low of 22.1°F (-5.5°C) and an average high of 35.4°F (1.9°C). February experiences an average high-temperature of an icy 35.4°F (1.9°C), barely different from January's 30.4°F (-0.9°C). Weather in February »
Weather in March
March, the first month of the spring in Pontoosuc, is a chilly month, with an average temperature varying between 34.2°F (1.2°C) and 49.5°F (9.7°C). March indicates a change in the average high-temperature, moving up from a wintry 35.4°F (1.9°C) in February to a frosty 49.5°F (9.7°C). Weather in March »
Weather in April
April in Pontoosuc, Illinois, is a comfortable spring month, with an average temperature fluctuating between 44.2°F (6.8°C) and 61.2°F (16.2°C). An escalation in the average high-temperature is seen with the onset of April, moving from a chilly 49.5°F (9.7°C) in March to an enjoyable 61.2°F (16.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Pontoosuc, Illinois, with temperature in the range of an average high of 71.1°F (21.7°C) and an average low of 54.3°F (12.4°C). May witnesses an increase in the average high-temperature, moving from a refreshing 61.2°F (16.2°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Pontoosuc, Illinois, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 63.7°F (17.6°C). Pontoosuc's transition into June brings a rise in the average high-temperature, moving from a pleasant 71.1°F (21.7°C) in May to a warm 80.2°F (26.8°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Pontoosuc, Illinois, with an average temperature fluctuating between 66.2°F (19°C) and 82.9°F (28.3°C). The average temperatures reach their apex in July, averaging 82.9°F (28.3°C) at the high end and 66.2°F (19°C) at the low end. Throughout July, the heat index is estimated at a tropical 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Pontoosuc, Illinois, with temperature in the range of an average low of 63.9°F (17.7°C) and an average high of 82.2°F (27.9°C). With the onset of August, Pontoosuc's average high-temperature clocks in at a still moderately hot 82.2°F (27.9°C), showing a minor fluctuation from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Pontoosuc, Illinois, with an average temperature fluctuating between 77°F (25°C) and 57.4°F (14.1°C). September is marked by an average high-temperature of a still moderately hot 77°F (25°C), almost identical to the preceding month. Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Pontoosuc, Illinois, with temperature in the range of an average high of 62.6°F (17°C) and an average low of 46°F (7.8°C). With the onset of October, Pontoosuc experiences a distinct temperature drop, with the average high-temperature reducing from September's warm 77°F (25°C) to an enjoyable 62.6°F (17°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Pontoosuc, Illinois, with an average temperature varying between 34.7°F (1.5°C) and 48.7°F (9.3°C). The arrival of November corresponds with a temperature reduction, down from October's enjoyable 62.6°F (17°C) to a chilly 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 Pontoosuc, Illinois, with an average temperature ranging between min 25.2°F (-3.8°C) and max 36.5°F (2.5°C). Pontoosuc in December undergoes a mild reduction in the average high-temperature, shifting from November's frosty 48.7°F (9.3°C) to a cold 36.5°F (2.5°C). Weather in December »
Updated: Jul 27, 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 are the coldest months?
January is the month that records the lowest temperatures, with averages ranging from a high of 30.4°F (-0.9°C) to a low of 18.5°F (-7.5°C).
What is the driest month?
January and December are months with the least rain in Pontoosuc when the rain falls for 3.7 days and typically aggregates up to 0.47" (12mm) of rain.
How much does it rain?
In Pontoosuc, during the entire year, the rain falls for 101.8 days and collects up to 9.92" (252mm) of precipitation.
When does it snow?
January through April, October through December are months with snowfall.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 7.7 days and typically aggregates up to 1.1" (28mm) of snow.
How much does it snow?
In Pontoosuc, during the entire year, snow falls for 24.5 days and aggregates up to 4.25" (108mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.3h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
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 wettest month in Pontoosuc?
The month with the most rainfall is May, when the rain falls for 14.4 days and typically aggregates up to 1.46" (37mm) of precipitation.
When it does not snow?
In Pontoosuc, Illinois, snow does not fall in May through September.
When are the longest days?
June has the longest days of the year, with an average of 15h and 0min of daylight.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the warmest month?
July stands out as Pontoosuc's warmest month, with an average high-temperature of 82.9°F (28.3°C) and a low-temperature of 66.2°F (19°C).
What is the most humid month?
With an average relative humidity of 82%, July is the most humid month.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.4h of sunshine.
What is the least humid month?
With an average relative humidity of 71%, October is the least humid month.
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
Pontoosuc, IL
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (30.4°F).
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Pontoosuc, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Pontoosuc, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.7mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.7mph - Average wind speed in September:
7.7mph - Average wind speed in October:
9.1mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.9mph
The windiest months (with the highest average wind speed) are January, February, March and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).
Average humidity
Pontoosuc, IL
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Pontoosuc, IL
- Average rainfall in January:
0.47" - Average rainfall in February:
0.51" - Average rainfall in March:
0.71" - Average rainfall in April:
1.18" - Average rainfall in May:
1.46" - Average rainfall in June:
1.1"
- Average rainfall in July:
1.02" - Average rainfall in August:
0.83" - Average rainfall in September:
0.83" - Average rainfall in October:
0.75" - Average rainfall in November:
0.59" - Average rainfall in December:
0.47"
The wettest month (with the highest rainfall) is May (1.46").
The driest months (with the least rainfall) are January and December (0.47").
Average rainfall days
Pontoosuc, IL
- Average rainfall days in January:
3.7 days - Average rainfall days in February:
3.5 days - Average rainfall days in March:
9.6 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
14.4 days - Average rainfall days in June:
11.9 days
- Average rainfall days in July:
11.2 days - Average rainfall days in August:
9.8 days - Average rainfall days in September:
8.2 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
5.9 days - Average rainfall days in December:
4.7 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is February (3.5 days).
Average snowfall
Pontoosuc, IL
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Pontoosuc, IL
- Average snowfall days in January:
7.7 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
3.4 days - Average snowfall days in April:
0.8 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:
0.4 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
4.4 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Pontoosuc, 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 0min
- 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:
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 3min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 4min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Pontoosuc, IL
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
19.8 days - Average sunshine days in March:
18.6 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
14 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
17.6 days - Average sunshine days in September:
19.4 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
22.9 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is May (14 days).
Average UV index
Pontoosuc, IL
The months with the highest UV index are 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
Pontoosuc, IL
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 28).
Average visibility
Pontoosuc, 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).
Pontoosuc, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location