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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 Porterfield, Illinois, with temperature in the range of an average high of 29.3°F (-1.5°C) and an average low of 17.4°F (-8.1°C). In Porterfield, the lowest average temperatures are observed in January, with a high of 29.3°F (-1.5°C) and a low of 17.4°F (-8.1°C). Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Porterfield, Illinois, with an average temperature fluctuating between 33.4°F (0.8°C) and 21°F (-6.1°C). February's beginning signals an average high-temperature of an icy 33.4°F (0.8°C), barely different from January's 29.3°F (-1.5°C). Weather in February »
Weather in March
March, the first month of the spring in Porterfield, is a chilly month, with temperature in the range of an average low of 33.1°F (0.6°C) and an average high of 47.7°F (8.7°C). The arrival of March brings a change in Porterfield's weather, with average high-temperatures moving from February's wintry 33.4°F (0.8°C) to a chilly 47.7°F (8.7°C). Weather in March »
Weather in April
April in Porterfield, Illinois, is a moderate spring month, with an average temperature ranging between min 43°F (6.1°C) and max 59.4°F (15.2°C). Observing a rise in April, the average high-temperature goes from March's chilly 47.7°F (8.7°C) to a mild 59.4°F (15.2°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Porterfield, Illinois, with an average temperature fluctuating between 54°F (12.2°C) and 71.1°F (21.7°C). May marks a rise in the average high-temperature, moving from April's moderate 59.4°F (15.2°C) to an agreeable 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 Porterfield, Illinois, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 62.1°F (16.7°C). The shift into June is characterized by a subtle rise in the average high-temperature, transitioning from May's agreeable 71.1°F (21.7°C) to a warm 79°F (26.1°C). Weather in June »
Weather in July
July, like June, in Porterfield, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 81°F (27.2°C). The warmest temperatures occur during July, when averages reach a peak of 81°F (27.2°C) and a low of 64.6°F (18.1°C). Throughout July, the heat index is calculated to be 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 Porterfield, Illinois, with an average temperature varying between 80.1°F (26.7°C) and 62.2°F (16.8°C). August's advent denotes a minor fluctuation in the average high-temperature to a still warm 80.1°F (26.7°C) from July's 81°F (27.2°C). Weather in August »
Weather in September
September, the first month of the autumn in Porterfield, is still a warm month, with an average temperature fluctuating between 75°F (23.9°C) and 56.5°F (13.6°C). Porterfield ushers in September with an average high-temperature of a still warm 75°F (23.9°C), showing a close resemblance to the previous month. Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Porterfield, Illinois, with an average temperature fluctuating between 61.7°F (16.5°C) and 46°F (7.8°C). In Porterfield, the average high-temperature in October decreases from a warm 75°F (23.9°C) in September to an enjoyable 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Porterfield, Illinois, with temperature in the range of an average high of 47.3°F (8.5°C) and an average low of 34°F (1.1°C). In Porterfield, the onset of November is marked by a decreased average high-temperature, declining from October's enjoyable 61.7°F (16.5°C) to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
December, the first month of the winter in Porterfield, is also a wintry month, with an average temperature fluctuating between 25.3°F (-3.7°C) and 35.6°F (2°C). The shift from November to December involves a decrease in the average high-temperature, dropping from a chilly 47.3°F (8.5°C) to an icy 35.6°F (2°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Porterfield?
Porterfield's coldest month, January, registers temperatures that range from a high of 29.3°F (-1.5°C) to a low of 17.4°F (-8.1°C).
What is the driest month in Porterfield?
The months with the least rainfall in Porterfield, Illinois, are January and December Rain falls for 6.4 days and accumulates 1.57" (40mm) of rain.
How many days does it rain in Porterfield?
Throughout the year, there are 151.3 rainfall days, and 30.16" (766mm) of precipitation is accumulated.
When does it snow in Porterfield?
January through April, October through December are months with snowfall in Porterfield, Illinois.
How many days does it snow in Porterfield?
In Porterfield, during the entire year, snow falls for 36.7 days and aggregates up to 14.09" (358mm) of snow.
What is the month with the least sunshine in Porterfield?
January has the least sunshine of the year in Porterfield, with an average of 3.9h of sunshine.
What is the month with the lowest UV index in Porterfield?
With an average maximum UV index of 1, January is the month with the lowest UV index.
What is the snowiest month in Porterfield?
The month with the most snowfall in Porterfield, Illinois, is February, when snow falls for 9.6 days and typically aggregates up to 3.7" (94mm) of snow.
When is Daylight Saving Time (DST) in Porterfield?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Porterfield, 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 Porterfield?
The month with the most rainfall in Porterfield is May, when the rain falls for 18.4 days and typically aggregates up to 4.41" (112mm) of precipitation.
When it does not snow in Porterfield?
In Porterfield, Illinois, snow does not fall in May through September.
When are the longest days in Porterfield?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What month has the most sunshine in Porterfield?
June has the most sunshine of the year, with an average of 10h of sunshine.
When is the highest UV index in Porterfield?
June and July, with an average maximum UV index of 6, are months with the highest UV index in Porterfield, Illinois.
What is the hottest time of year in Porterfield?
The warmest period in Porterfield 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 Porterfield?
July is the most humid month in Porterfield, with an average relative humidity of 85%.
What is the least humid month in Porterfield?
With an average relative humidity of 72%, October is the least humid month in Porterfield.
What is the month with the shortest days in Porterfield?
With an average of 9h and 18min of daylight, December has the shortest days of the year in Porterfield, Illinois.
Average temperature
Porterfield, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°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 (17.4°F).
Average pressure
Porterfield, 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:
29.95"Hg - Average pressure in June:
29.91"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:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Porterfield, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Porterfield, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Porterfield, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
1.61" - Average rainfall in March:
2.17" - Average rainfall in April:
3.7" - Average rainfall in May:
4.41" - Average rainfall in June:
3.23"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.24" - Average rainfall in September:
2.24" - Average rainfall in October:
2.91" - Average rainfall in November:
1.73" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").
Average rainfall days
Porterfield, IL
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
17 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Porterfield, IL
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Porterfield, IL
- Average snowfall days in January:
11.2 days - Average snowfall days in February:
9.6 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.3 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:
2.5 days - Average snowfall days in December:
7 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Porterfield, 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 2min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Porterfield, IL
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
10.7 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
14.7 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
15.9 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index
Porterfield, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Porterfield, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility
Porterfield, IL
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Porterfield, Illinois, USA
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