Climate and monthly weather forecastCairo, IL
Climate and monthly weather forecast
The climate of Cairo
Cairo, Illinois experiences a humid subtropical climate, with the Köppen climate classification of Cfa. This signifies the region has no dry season and exhibits significant rainfall throughout the year. Situated at the confluence of the Ohio and Mississippi Rivers, the city obtains somewhat moderate weather conditions with periods of higher temperatures or increased rainfall.Commencing with temperature, Cairo experiences a wide range in temperature; an average minimum of 28.4°F (-2°C) in January to an average maximum of 88.2°F (31.2°C) in July. This variation in temperature illustrates both the chill of the winter months and the heat of the summer season. Humidity remains relatively consistent all year, varying slighty from 69% in October to 78% in February, March, May, and December. In relation to rainfall, the city receives most precipitation in April with an average of 4.21in, whilst September is the driest month, receiving only 1.42in of rainfall. In terms of wind, Cairo sees speeds ranging from 5.7mph (9.2km/h) in July and August to 9.1mph (14.6km/h) in January, February, and March, thus illustrating a gentle breeze throughout a majority of the year.
Snowfall is limited in Cairo, with most snow received in February (1.5in) and least in several months (0in from May till September). With sunshine hours differing from 4.9h in December to 10.7h in June, the sunlight in Cairo depends greatly on the time of year. Additionally, the cloud cover varies from 26% in June to 49% in February. One distinctive pattern that emerges is the lack of a dry season as the city experiences rainfall all year round, though some months have less than others.
The best time to visit Cairo
Cairo's climate suggests that the best time to visit is typically between April and October. During these months, temperatures range from 67.6°F (19.8°C) to 86.4°F (30.2°C), providing ample warmth for sightseeing and outdoor activities. Meanwhile, rainfall is less than other months, varying from 1.42in in September to 4.21in in April, ensuring that visitors are not overly inconvenienced by rain. Sunshine hours also increase during these months, peaking in June at 10.7h per day. With lower cloud cover, especially in June (26%), visitors can enjoy clearer skies and more daylight hours.The worst time to visit Cairo
The winter season (December through February) is deemed less desirable for visiting Cairo. With temperatures dropping to a low average of 28.4°F (-2°C) in January, the cold can be uncomfortable for outdoor tourism. These months also experience increased cloud cover (up to 49% in February) and shorter daylight hours, peaking at only 10h in December. Furthermore, February sees the highest occurrence of snowfall (1.5in), which can disrupt plans for travel and outdoor activities.Spring weather in Cairo
In Cairo, the spring months of March, April, and May present a climate that is gradually warming. Temperatures rise from an average low of 40.6°F (4.8°C) in March to a comfortable 59.5°F (15.3°C) by May. This period sees an increase in rainfall, culminating in April's peak average of 4.21in. Similarly, the levels of sunshine duration enhance, starting at 6.3h in March and reaching 9.3h by May. Despite the increased rainfall, the overall warmer temperatures and extended sunshine make spring a favorable time in Cairo.Summer weather in Cairo
During summer (June through August), Cairo experiences its hottest period with temperatures peaking at an average of 88.2°F (31.2°C) in July. Accompanied by lower wind speeds (6.4mph (10.3km/h) in June to 5.7mph (9.2km/h) in August) and a reduced cloud cover, this results in a hot, humid climate. Despite rainfall reaching its lowest point in August (2.72in), this season remains humid with an average relative humidity of 75% in June and 76% in July and August. With sunshine hours at their highest and daylight duration exceeding 14h, summers in Cairo are typically hot and sunny.Autumn weather in Cairo
Autumn offers a fairly moderate climate in Cairo from September to November. Average temperatures decrease from 81.5°F (27.5°C) in September to a more comfortable 55.4°F (13°C) by November. Although rainfall remains minimal in September (1.42in), levels increase come November (3.11in). Similar to fall, the duration of sunshine and daylight decreases as winter approaches, dropping from 9.6h in September to 5.6h by November. Despite the cooling temperatures and shorter days, autumn can be a pleasant time to visit Cairo as extreme weather conditions are less likely.Winter weather in Cairo
Winter in Cairo begins in December and lasts till February. This period exhibits average temperatures beginning from 45.5°F (7.5°C) in December, hitting the coldest in January with 28.4°F (-2°C), and slightly increasing in February to 31.8°F (-0.1°C). Snowfall is most likely during these months, with February seeing the most at an average of 1.5in. Daylight hours are notably fewer, with a minimum of 9.7h in December and slowly increasing throughout the season. The city's climate during winter is generally cold and less favorable for outdoor activities.Weather in January
In January, Cairo, Illinois, experiences mid-winter weather conditions typical to the temperate region. Temperatures plunge from December's figures, with the lowest temperatures of the year being recorded during this month. Snowfall, though minimal, is not uncommon, with 1.14" (29mm) of snow measured. Weather in January »Weather in February
In February, a marginal improvement is noticeable in weather conditions in Cairo as compared to January, with temperatures inching upwards. As the last month of winter, February maintains the season's hallmark traits, such as snowfall. Weather in February »Weather in March
March's weather marks the beginning of spring in Cairo. Temperatures continue their upward trend from February, albeit at a faster pace. The spring equinox creates a balance between daylight and nightfall duration, enhancing outdoor activities. Weather in March »Weather in April
Come April, the evidence of winter in Cairo fades as the weather warms up further. Temperatures spike compared to the previous three months, promoting more vigorous blooming in the local flora. One significant change is the disappearance of snowfall, a clear sign that winter's cold grasp has been completely left behind. Weather in April »Weather in May
May brings a cautious initiation of the early summer season in Cairo. As temperatures climb higher, daylight duration extends, providing a delightful bouquet of sunlight, warmth, and burgeoning nature. Showers are still common, especially in the afternoons, providing a welcome respite from the ascending heat. Weather in May »Weather in June
In June, summer truly settles in Cairo, bringing with it characteristic traits like sizzling temperatures, longer days, and reduced rainfall. Cairo basks under 14.7 hours of daylight, the longest throughout the year. The city's urban landscapes and natural parks become vibrant oasis of fun, attracting residents and tourists alike to partake in various outdoor activities. Weather in June »Weather in July
July is the peak of the summer season in Cairo, with the highest temperatures of the year. UV Index levels hit a maximum of 6, necessitating taking precautions while stepping outdoors during daylight hours. With the dry weather, vegetation glistens under the bright sunshine, making Cairo aesthetically pleasing. Weather in July »Weather in August
August weather in Cairo upholds the summer spell, comparable to July in terms of temperature and daylight duration. As summer's influence begins to wear off, there is a slight dip in daylight hours, hinting at an approaching change of season. Weather in August »Weather in September
In September, Cairo experiences a gradual transition from summer to fall, giving rise to mildly warm weather. The change of seasons is noticeable with diminishing daylight hours and decreasing temperatures compared to August's highs. Weather in September »Weather in October
October heralds in an agreeable autumn spell in Cairo, Illinois. While temperatures significantly drop in comparison to September, they remain comfortably warm during the day. This month's weather, therefore, offers a pleasant balance between clear, sunny skies and cooler temperatures. Weather in October »Weather in November
November signifies a substantial shift in Cairo's weather patterns, with winter's preliminary brushstrokes becoming apparent. Compared to October, temperatures take a nosedive, bringing with it fresher and noticeably cooler air. Weather in November »Weather in December
Winter takes a firmer grip on Cairo, Illinois, in December. Daylight hours shorten, temperatures continue to decline, and the first substantial snowfall is recorded. A distinct decrease in sunlight duration results in crisp, shorter days and cooler nights. Weather in December »Updated: Feb 12, 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
The coldest period is January, when temperatures fluctuate between an average high of 41.2°F (5.1°C) and a low of 28.4°F (-2°C).
Throughout the year, in Cairo, there are 156.3 rainfall days, and 36.65" (931mm) of precipitation is accumulated.
Months with snowfall in Cairo are January through April, October through December.
Throughout the year, there are 11.5 snowfall days, and 4.88" (124mm) of snow is accumulated.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
The months with the highest humidity in Cairo are February, March, May and December, with an average relative humidity of 78%.
The month with the most snowfall is February, when snow falls for 3.8 days and typically aggregates up to 1.5" (38mm) of snow.
The month with the least sunshine in Cairo, Illinois, is February, with an average of 4.7h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Cairo, Illinois, 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.
April is the month with the most rainfall in Cairo. Rain falls for 15.2 days and accumulates 4.21" (107mm) of precipitation.
In Cairo, snow does not fall in May through September.
May through August, with an average maximum UV index of 6, are months with the highest UV index in Cairo, Illinois.
June has the longest days of the year, with an average of 14h and 42min of daylight.
The month with the most sunshine in Cairo is June, with an average of 10.7h of sunshine.
July, with its high-temperature average of 88.2°F (31.2°C) and a low-temperature average of 69.8°F (21°C), is the warmest month in Cairo, Illinois.
September is the month with the least rainfall in Cairo, Illinois. Rain falls for 11.4 days and accumulates 1.42" (36mm) of precipitation.
With an average relative humidity of 69%, October is the least humid month in Cairo.
The month with the shortest days in Cairo, Illinois, is December, with an average of 9h and 42min of daylight.
Average temperature
Cairo, IL
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure
Cairo, 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:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"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:
30.05"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 (29.94"Hg).
Average wind speed
Cairo, IL
- Average wind speed in January:
9.1mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9.1mph - Average wind speed in April:
9mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Cairo, IL
The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Cairo, IL
- Average rainfall in January:
2.36" - Average rainfall in February:
3.58" - Average rainfall in March:
3.94" - Average rainfall in April:
4.21" - Average rainfall in May:
3.94" - Average rainfall in June:
2.95"
- Average rainfall in July:
2.83" - Average rainfall in August:
2.72" - Average rainfall in September:
1.42" - Average rainfall in October:
2.68" - Average rainfall in November:
3.11" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days
Cairo, IL
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
11.4 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).
Average snowfall
Cairo, IL
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Cairo, IL
- Average snowfall days in January:
3.4 days - Average snowfall days in February:
3.8 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0.3 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:
0.1 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Cairo, IL
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 36min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Cairo, IL
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
13.5 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.3 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 (12.3 days).
Average UV index
Cairo, 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 and December (UV index 2).
Average cloud cover
Cairo, IL
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility
Cairo, 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).
