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, is another cold winter month in Pomona, Illinois, with an average temperature varying between 26.2°F (-3.2°C) and 39.6°F (4.2°C). With an average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 26.2°F (-3.2°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Pomona, Illinois, with an average temperature varying between 30°F (-1.1°C) and 43.7°F (6.5°C). In February, the average high-temperature is practically the same as in January - a frosty 43.7°F (6.5°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Pomona, Illinois, with an average temperature ranging between min 38.8°F (3.8°C) and max 55.2°F (12.9°C). In Pomona, the average high-temperature in March increases from a chilly 43.7°F (6.5°C) in February to a fresh 55.2°F (12.9°C). Weather in March »
Weather in April
April is a comfortable spring month in Pomona, Illinois, with an average temperature varying between 48.6°F (9.2°C) and 66.2°F (19°C). In April, the average high-temperature rises from a fresh 55.2°F (12.9°C) in March to an enjoyable 66.2°F (19°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Pomona, Illinois, with an average temperature varying between 75.7°F (24.3°C) and 58.3°F (14.6°C). In Pomona, the average high-temperature in May rises from a comfortable 66.2°F (19°C) in April to a moderately hot 75.7°F (24.3°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Pomona, Illinois, with an average temperature fluctuating between 66.4°F (19.1°C) and 84.7°F (29.3°C). In Pomona, Illinois, the average high-temperature in June increases from a moderately hot 75.7°F (24.3°C) in May to a still warm 84.7°F (29.3°C). Weather in June »
Weather in July
July is a hot summer month in Pomona, Illinois, with an average temperature ranging between max 87.4°F (30.8°C) and min 68.7°F (20.4°C). The warmest month is July, with an average high-temperature of 87.4°F (30.8°C) and an average low-temperature of 68.7°F (20.4°C). In July, the average heat index is estimated at a sweltering 102.2°F (39°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Pomona, Illinois, with temperature in the range of an average low of 66.4°F (19.1°C) and an average high of 85.8°F (29.9°C). In Pomona, the average high-temperature in August is essentially the same as in July - a moderately hot 85.8°F (29.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Pomona, Illinois, with an average temperature fluctuating between 80.4°F (26.9°C) and 60.3°F (15.7°C). In September, the average high-temperature marginally drops from a moderately hot 85.8°F (29.9°C) in August to a still warm 80.4°F (26.9°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Pomona, Illinois, with an average temperature ranging between max 67.5°F (19.7°C) and min 49.3°F (9.6°C). In October, the average high-temperature decreases from a moderately hot 80.4°F (26.9°C) in September to a comfortable 67.5°F (19.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Pomona, is another cool month, with temperature in the range of an average low of 38.7°F (3.7°C) and an average high of 54°F (12.2°C). In Pomona, the average high-temperature in November drops from a comfortable 67.5°F (19.7°C) in October to a fresh 54°F (12.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Pomona, Illinois, with an average temperature varying between 43.7°F (6.5°C) and 31.8°F (-0.1°C). In Pomona, the average high-temperature in December decreases from a cool 54°F (12.2°C) in November to a chilly 43.7°F (6.5°C). Weather in December »
[Resources]FAQ
What is the coldest month in Pomona?
January is the coldest month, with an average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 26.2°F (-3.2°C).
How many days does it rain in Pomona?
Throughout the year, in Pomona, there are 158.6 rainfall days, and 34.69" (881mm) of precipitation is accumulated.
When does it snow in Pomona?
January through April, October through December are months with snowfall.
How many days does it snow in Pomona?
Throughout the year, in Pomona, Illinois, there are 15.9 snowfall days, and 5.71" (145mm) of snow is accumulated.
What is the month with the least sunshine in Pomona?
January has the least sunshine of the year in Pomona, Illinois, with an average of 4.7h of sunshine.
What are the months with the lowest UV index in Pomona?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most in Pomona?
February is the month with the most snowfall in Pomona, Illinois. Snow falls for 4.8 days and accumulates 1.73" (44mm) of snow.
When is Daylight Saving Time (DST) in Pomona?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Pomona, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Pomona?
April is the month with the most rainfall. Rain falls for 15.5 days and accumulates 4.49" (114mm) of precipitation.
What is the most humid month in Pomona?
May is the most humid month, with an average relative humidity of 79%.
When it does not snow in Pomona?
May through September are months without snowfall in Pomona, Illinois.
What is the month with the highest UV index in Pomona?
The months with the highest UV index in Pomona, Illinois, are May through August, with an average maximum UV index of 6.
When are the longest days in Pomona?
The month with the longest days in Pomona is June, with an average of 14h and 43min of daylight.
What month has the most sunshine in Pomona?
The month with the most sunshine in Pomona is June, with an average of 10.6h of sunshine.
What is the warmest month in Pomona?
With an average high-temperature of 87.4°F (30.8°C) and an average low-temperature of 68.7°F (20.4°C), July is the warmest month in Pomona, Illinois.
What is the driest month in Pomona?
September is the month with the least rainfall in Pomona. Rain falls for 12.7 days and accumulates 1.85" (47mm) of precipitation.
What is the least humid month in Pomona?
October is the least humid month in Pomona, with an average relative humidity of 71%.
What is the month with the shortest days in Pomona?
With an average of 9h and 37min of daylight, December has the shortest days of the year.
Average temperature
Pomona, IL
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure
Pomona, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Pomona, IL
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.1mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Pomona, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Pomona, IL
- Average rainfall in January:
2.17" - Average rainfall in February:
2.36" - Average rainfall in March:
3.11" - Average rainfall in April:
4.49" - Average rainfall in May:
3.82" - Average rainfall in June:
3.43"
The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days
Pomona, IL
- Average rainfall days in January:
9.4 days - Average rainfall days in February:
10.3 days - Average rainfall days in March:
15.2 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
13.9 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
10.3 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.4 days).
Average snowfall
Pomona, IL
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Pomona, IL
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
1.8 days - Average snowfall days in April:
0.4 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:
0.1 days - Average snowfall days in November:
1 days - Average snowfall days in December:
3 days
The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Pomona, IL
- Average daylight in January:
9h and 55min - Average daylight in February:
10h and 50min - Average daylight in March:
11h and 59min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 13min - Average daylight in June:
14h and 43min
- Average daylight in July:
14h and 28min - Average daylight in August:
13h and 34min - Average daylight in September:
12h and 25min - Average daylight in October:
11h and 13min - Average daylight in November:
10h and 10min - Average daylight in December:
9h and 37min
The month with the longest days is June (Average daylight: 14h and 43min).
The month with the shortest days is December (Average daylight: 9h and 37min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 42min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days
Pomona, IL
- Average sunshine days in January:
17.7 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
11.7 days - Average sunshine days in August:
14.2 days - Average sunshine days in September:
16 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index
Pomona, IL
The months with the highest UV index are May, 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
Pomona, IL
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility
Pomona, 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).
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