Climate and monthly weather forecastPhoenix, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Phoenix, Illinois, with temperature in the range of an average low of 18.9°F (-7.3°C) and an average high of 29.7°F (-1.3°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 29.7°F (-1.3°C) and a low of 18.9°F (-7.3°C). Weather in January »Weather in February
February, the last month of the winter in Phoenix, is a wintry month, with an average temperature ranging between max 33.1°F (0.6°C) and min 21.2°F (-6°C). With the advent of February, Phoenix experiences an average high-temperature of an icy 33.1°F (0.6°C), mirroring a close resemblance to the previous month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Phoenix, Illinois, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 32.4°F (0.2°C). With the onset of March, Phoenix sees a temperature rise, with the average high-temperature moving from February's wintry 33.1°F (0.6°C) to a frosty 45.5°F (7.5°C). Weather in March »Weather in April
April in Phoenix, Illinois, is a mild spring month, with an average temperature varying between 56.7°F (13.7°C) and 41.7°F (5.4°C). The beginning of April signals a rise in the average high-temperature, moving from a chilly 45.5°F (7.5°C) in March to a moderate 56.7°F (13.7°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Phoenix, Illinois, with an average temperature varying between 52.3°F (11.3°C) and 68.7°F (20.4°C). May's onset brings a rise in the average high-temperature, moving from a moderate 56.7°F (13.7°C) in April to an agreeable 68.7°F (20.4°C). Weather in May »Weather in June
June, the first month of the summer in Phoenix, is a warm month, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 77.7°F (25.4°C). June's arrival brings a temperature shift, moving from a pleasant 68.7°F (20.4°C) in May to a warm 77.7°F (25.4°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Phoenix, Illinois, with an average temperature varying between 81.3°F (27.4°C) and 65.8°F (18.8°C). In Phoenix, the peak temperatures are generally noted in July, averaging a high of 81.3°F (27.4°C) and a low of 65.8°F (18.8°C). The heat index for July is calculated to be a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Phoenix, Illinois, with an average temperature fluctuating between 64.6°F (18.1°C) and 80.1°F (26.7°C). August's advent denotes a minor fluctuation in the average high-temperature to a still moderately hot 80.1°F (26.7°C) from July's 81.3°F (27.4°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Phoenix, Illinois, with temperature in the range of an average high of 73.9°F (23.3°C) and an average low of 58.3°F (14.6°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from 80.1°F (26.7°C) in August to a still moderately hot 73.9°F (23.3°C). Weather in September »Weather in October
October, like September, in Phoenix, Illinois, is another refreshing autumn month, with an average temperature fluctuating between 61.2°F (16.2°C) and 46.9°F (8.3°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's moderately hot 73.9°F (23.3°C) to a comfortable 61.2°F (16.2°C). Weather in October »Weather in November
November, the last month of the autumn in Phoenix, is another chilly month, with an average temperature varying between 34.9°F (1.6°C) and 46.9°F (8.3°C). The beginning of November marks a decrease in the average high-temperature, transitioning from an enjoyable 61.2°F (16.2°C) in October to a chilly 46.9°F (8.3°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Phoenix, Illinois, with an average temperature varying between 35.6°F (2°C) and 25.9°F (-3.4°C). The move into December indicates a reduction in the average high-temperature, down from November's chilly 46.9°F (8.3°C) to a cold 35.6°F (2°C). Weather in December »Updated: Aug 14, 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
Phoenix's coldest weather arrives in January, when temperatures average a high of 29.7°F (-1.3°C) and a low of 18.9°F (-7.3°C).
The months with the highest humidity are January and February, with an average relative humidity of 82%.
In Phoenix, during the entire year, the rain falls for 155.6 days and collects up to 31.3" (795mm) of precipitation.
Months with snowfall in Phoenix, Illinois, are January through April, October through December.
The month with the most snowfall is January, when snow falls for 12.6 days and typically aggregates up to 4.53" (115mm) of snow.
Throughout the year, there are 44.6 snowfall days, and 16.46" (418mm) of snow is accumulated.
With an average of 3.6h of sunshine, January has the least sunshine of the year.
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.
The month with the most rainfall is May, when the rain falls for 17.4 days and typically aggregates up to 4.17" (106mm) of precipitation.
In Phoenix, snow does not fall in May through September.
The month with the longest days is June, with an average of 15h and 6min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
July is the warmest month, with an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 65.8°F (18.8°C).
August has the most sunshine of the year, with an average of 10.1h of sunshine.
The least humid month is October, with an average relative humidity of 73%.
The month with the least rainfall is December, when the rain falls for 7.9 days and typically collects 1.54" (39mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 12min of daylight.
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Phoenix, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Phoenix, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"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:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Phoenix, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Phoenix, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Phoenix, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.69" - Average rainfall in March:
2.09" - Average rainfall in April:
3.43" - Average rainfall in May:
4.17" - Average rainfall in June:
3.82"
- Average rainfall in July:
3.31" - Average rainfall in August:
2.56" - Average rainfall in September:
2.48" - Average rainfall in October:
2.76" - Average rainfall in November:
1.69" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days
Phoenix, IL
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
7.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).
Average snowfall
Phoenix, IL
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Phoenix, IL
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
10.5 days - Average snowfall days in March:
6.1 days - Average snowfall days in April:
1.9 days - Average snowfall days in May:
0.1 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:
4 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Phoenix, IL
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
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 12min).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
3h and 54min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Phoenix, IL
- Average sunshine days in January:
13 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
10.2 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
14 days - Average sunshine days in October:
14.4 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
15 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).
Average UV index
Phoenix, 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
Phoenix, IL
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Phoenix, IL
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
