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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 a freezing cold winter month in Pontiac, Illinois, with an average temperature fluctuating between 18.5°F (-7.5°C) and 30.2°F (-1°C). The month of January sees the lowest average temperatures, reaching 30.2°F (-1°C) at the peak and 18.5°F (-7.5°C) at the low. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Pontiac, Illinois, with an average temperature ranging between max 34.9°F (1.6°C) and min 21.7°F (-5.7°C). Pontiac's weather in February, with an average high-temperature of a cold 34.9°F (1.6°C), subtly shifts from January's 30.2°F (-1°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Pontiac, Illinois, with an average temperature fluctuating between 33.4°F (0.8°C) and 47.5°F (8.6°C). March's arrival coincides with a rise in the average high-temperature, moving from February's cold 34.9°F (1.6°C) to a frosty 47.5°F (8.6°C). Weather in March »
Weather in April
April in Pontiac, Illinois, is a refreshing spring month, with an average temperature varying between 43.7°F (6.5°C) and 59.7°F (15.4°C). April marks a rise in the average high-temperature, moving from March's chilly 47.5°F (8.6°C) to a mild 59.7°F (15.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Pontiac, Illinois, with temperature in the range of an average low of 54.7°F (12.6°C) and an average high of 71.2°F (21.8°C). As April gives way to May, the average high-temperature displays an increase, moving from a mild 59.7°F (15.4°C) to an agreeable 71.2°F (21.8°C). Weather in May »
Weather in June
June, the first month of the summer in Pontiac, is a moderately hot month, with an average temperature varying between 79.3°F (26.3°C) and 62.4°F (16.9°C). With the onset of June, Pontiac observes a minor temperature ascent, with the average high-temperature adjusting from May's pleasant 71.2°F (21.8°C) to a warm 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Pontiac, Illinois, with an average temperature varying between 81°F (27.2°C) and 64.6°F (18.1°C). Pontiac's July weather, marked by an average high temperature of 81°F (27.2°C) and an average low temperature of 64.6°F (18.1°C), is the warmest in the year. July's heat index is estimated at a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Pontiac, Illinois, with an average temperature varying between 80.1°F (26.7°C) and 62.4°F (16.9°C). The advent of August brings an average high-temperature of a still warm 80.1°F (26.7°C), exhibiting minor difference from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Pontiac, is still a warm month, with an average temperature ranging between min 57°F (13.9°C) and max 75.6°F (24.2°C). With the onset of September, a modest change to a still moderately hot 75.6°F (24.2°C) from August's 80.1°F (26.7°C) is noted in high-temperature. Weather in September »
Weather in October
October, like September, in Pontiac, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 46.6°F (8.1°C) and 62.2°F (16.8°C). In October, the average high-temperature decreases from a warm 75.6°F (24.2°C) in September to an enjoyable 62.2°F (16.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Pontiac, Illinois, with temperature in the range of an average low of 34.9°F (1.6°C) and an average high of 47.5°F (8.6°C). With the onset of November, Pontiac's average high-temperature witnesses a clear drop, receding from October's comfortable 62.2°F (16.8°C) to a frosty 47.5°F (8.6°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Pontiac, Illinois, with an average temperature ranging between max 36.5°F (2.5°C) and min 25.9°F (-3.4°C). December indicates a shift in the average high-temperature, from November's chilly 47.5°F (8.6°C) to a cold 36.5°F (2.5°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Pontiac?
In Pontiac, January records the average lowest temperatures, peaking at 30.2°F (-1°C) and reaching a low of 18.5°F (-7.5°C).
What is the driest month in Pontiac?
January and February are months with the least rain when the rain falls for 4.3 days and typically aggregates up to 0.71" (18mm) of rain.
How much does it rain in Pontiac?
Throughout the year, there are 125.3 rainfall days, and 15.71" (399mm) of precipitation is accumulated.
When does it snow in Pontiac?
Months with snowfall in Pontiac, Illinois, are January through April, October through December.
When does it snow the most in Pontiac?
January is the month with the most snowfall in Pontiac, Illinois. Snow falls for 10.2 days and accumulates 1.73" (44mm) of snow.
How much does it snow in Pontiac?
Throughout the year, in Pontiac, there are 30.6 snowfall days, and 6.93" (176mm) of snow is accumulated.
What is the month with the least sunshine in Pontiac?
The month with the least sunshine is January, with an average of 3.8h of sunshine.
When is Daylight Saving Time (DST) in Pontiac?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Pontiac, 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 in Pontiac?
May is the month with the most rainfall in Pontiac, Illinois. Rain falls for 16.8 days and accumulates 2.44" (62mm) of precipitation.
When it does not snow in Pontiac?
In Pontiac, snow does not fall in May through September.
When are the longest days in Pontiac?
With an average of 15h and 6min of daylight, June has the longest days of the year.
What are the months with the most sunshine in Pontiac?
June and August, with an average of 9.8h of sunshine, are months with the most sunshine in Pontiac, Illinois.
What is the month with the highest UV index in Pontiac?
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 Pontiac?
The warmest period tends to be July, when average temperatures fluctuate between a high of 81°F (27.2°C) and a low of 64.6°F (18.1°C).
What is the most humid month in Pontiac?
July is the most humid month in Pontiac, with an average relative humidity of 85%.
What is the least humid month in Pontiac?
October is the least humid month in Pontiac, with an average relative humidity of 71%.
What is the month with the shortest days in Pontiac?
With an average of 9h and 18min of daylight, December has the shortest days of the year in Pontiac, Illinois.
When is the lowest UV index in Pontiac?
December is the month with the lowest UV index in Pontiac, Illinois, with an average maximum UV index of 1.
Average temperature
Pontiac, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.2°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Pontiac, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"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:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Pontiac, IL
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.2mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Pontiac, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Pontiac, IL
- Average rainfall in January:
0.71" - Average rainfall in February:
0.71" - Average rainfall in March:
1.18" - Average rainfall in April:
1.77" - Average rainfall in May:
2.44" - Average rainfall in June:
1.93"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.3" - Average rainfall in September:
1.06" - Average rainfall in October:
1.26" - Average rainfall in November:
0.79" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is May (2.44").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days
Pontiac, IL
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
13 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.6 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
10.1 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
6.7 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.3 days).
Average snowfall
Pontiac, IL
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Pontiac, IL
- Average snowfall days in January:
10.2 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
4.1 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:
0.2 days - Average snowfall days in November:
1.8 days - Average snowfall days in December:
6.3 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Pontiac, 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 2min
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 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 2min
The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Pontiac, IL
- Average sunshine days in January:
18.5 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
14 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.4 days - Average sunshine days in September:
17.8 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
19.3 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (11.3 days).
Average UV index
Pontiac, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Pontiac, IL
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Pontiac, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Pontiac, Illinois, USA
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