Climate and monthly weather forecastPearl City, IL
Climate and monthly weather forecast
The climate of Pearl City
Pearl City, Illinois, geographically positioned in the Midwestern region of the United States, encounters a humid continental climate characterized by a broad fluctuation in seasonal temperature. This climate type, denoted as Dfa in the Köppen climate classification, marks the conditions as having no dry season and hot summer.Weather patterns throughout the year are defined by the changing seasons, with temperatures ranging from a low of 12.9°F (-10.6°C) in the frigid winter months to a high of 79.3°F (26.3°C) during the heat of the summer. Rainfall figures fluctuate slightly, seeing a minimum monthly average of 1.06" (27mm) to a maximum of 3.43" (87mm). Snow is a distinct feature of the Pearl City winter, with the depth reaching a peak of 3.46" (88mm). The number of snowfall days can reach up to 13.1 in winter.
Sunshine is somewhat limited throughout the year, with the longest days offering only 9.7 hours of sunlight. However, it is noteworthy to mention that Pearl City experiences a uniquely high percentage of cloudiness throughout the year, reaching a maximum of 63% in the winter months.
The best time to visit Pearl City
Based on the climatic conditions, visitors seeking pleasant weather, moderate temperatures and increased sunshine hours may find the summer months from June to August most suitable. During this period, average temperatures range from 67.5°F (19.7°C) to 79.3°F (26.3°C) and sunshine hours reach their peak with up to 9.7 hours per day. The humidity is relatively lower compared to other seasons, ranging from 80% to 85% which brings a comfortable balance between warmth and moisture.The worst time to visit Pearl City
Winter in Pearl City, from December to February, may prove challenging for visitors unaccustomed to colder climates. During these months, the mercury can plunge to a chilling 12.9°F (-10.6°C). Snow is also common, with an average depth of 3.46" (88mm) in January. These harsh conditions, combined with low sunshine hours — minimum 4 hours per day — and a high level of cloudiness, could make this season quite undesirable.Spring weather in Pearl City
Progressing from the frosty winter, springtime in Pearl City brings a considerable change in weather conditions. From March to May, temperatures shift from a low of 28.8°F (-1.8°C) to a high of 67.5°F (19.7°C). Rainfall increases steadily, moving from an average of 1.34" (34mm) to 2.76" (70mm). Meanwhile, the daylight extends from 12 hours per day in March to 14.6 hours per day in May.Summer weather in Pearl City
Summers in Pearl City stand out for the warmth they bring, with temperatures averaging between 67.5°F (19.7°C) and 79.3°F (26.3°C) from June through August. Although this period sees the highest rainfall of the year, with up to 3.43" (87mm) in June, it is balanced by the longest days, with a maximum of 15.2 hours of daylight in June. Humidity levels are relatively lower during this season, making for a comfortable atmosphere.Autumn weather in Pearl City
The transition into autumn from September to November brings a gradual drop in temperatures, falling from a high of 72.5°F (22.5°C) to a moderate 43.9°F (6.6°C). Rainfall also sees a decrease, starting from 1.69" (43mm) and lowering to 1.34" (34mm). However, sunshine hours begin to shorten as Pearl City moves towards winter, with daylight decreasing from 12.5 hours in September to 9.8 hours by November.Winter weather in Pearl City
Winter in Pearl City ushers in the coldest time of the year. The period between December and February sees temperatures fluctuating from a high of 31.6°F (-0.2°C) to a low of 12.9°F (-10.6°C). Moreover, this season sees the most snowfall, reaching up to 3.46" (88mm). With a drastic reduction in daylight hours to 9.1 in December and an increase in cloudiness, winter in Pearl City can be quite challenging.Weather in January
January sees winter reign in the city of Pearl City, Illinois, creating a truly picturesque scene with a characteristic chill in the air. Snow make a regular appearance with a total accumulation of 3.46" (88mm) across approximately 13 days. Weather in January »Weather in February
The February landscape in Pearl City barely escapes the grasp of winter, progressing with marginally warmer temperatures than January. Snowfall subsides significantly to 3.35" (85mm) compared to the preceding month. Increasing daylight hours hint towards the impending arrival of spring, yet the days retain the wintry feel. Weather in February »Weather in March
March in Pearl City signals the start of the transition phase from winter to spring. With less snowfall, now only 1.81" (46mm), and longer daylight hours, the city begins to shrug off the winter chill. The climate slightly warms up, but a substantial increase in rainfall is observed in this month. Weather in March »Weather in April
April in Pearl City marks the heart of spring and the weather becomes noticeably milder. The last bits of snow vanish while the rainfall increases to a monthly total of 2.36" (60mm), sparking off the growth of new life across the city. Weather in April »Weather in May
As May rolls around, it becomes clear that Pearl City is on the cusp of summer. Temperatures rise significantly, marking an evident shift from the earlier spring months. The analysis confirms the complete absence of snow accompanied by a rainfall peak of 2.76" (70mm). Weather in May »Weather in June
June is the official gateway to summer in Pearl City and is characterized by a warm, lively atmosphere. With the longest daylight hours and the maximum UV index of 5, the city enjoys an abundance of sunlight. Rainfall drops yet conditions remain humid, but wind speed and pressure decreases, forming a still, gentle summer ambiance. Weather in June »Weather in July
July is the height of summer in Pearl City, with the weather turning significantly hot. The peak temperature rises to a high of 79.3°F (26.3°C), the highest in the year. However, the city does not get stiflingly hot, owing to moderate levels of rainfall, relative humidity, and steady wind pressure. Weather in July »Weather in August
August maintains the summer vibes in Pearl City, although there is a slight dip in temperatures compared to July. After a peak in July, the temperatures cool down to 78.1°F (25.6°C). The days remain long and sunny, perfect for continuing outdoor activities and summer events. Weather in August »Weather in September
Come September, the beautiful city of Pearl City witnesses the emergence of Autumn. Temperatures slide down from August, marking the onset of cooler days and colder nights. A dip in humidity levels and repair in visibility suggest clear and crisp autumn weather. Weather in September »Weather in October
October in Pearl City is the heart of autumn, characterized by mild weather and picturesque fall colors. Against the backdrop of dropping temperatures, Pearl City showcases the beauty of autumn in full swing. Gentle rainfall and moderate wind speeds amplify the carriage rides, pumpkin patches, and harvest celebrations. Weather in October »Weather in November
As November sets in, Pearl City braces for the onset of winter. The transition is marked by a significant drop in temperature, ramping up the chill factor. The city expects the Reappearance of snow, recording 1.38" (35mm), signaling the imminent return of winter after a long gap. Weather in November »Weather in December
Finally, December in Pearl City ushers in the full might of winter, seizing center stage with its snow-covered landscapes. Snow accumulation increases to 2.52" (64mm) in December, painting the town white. The longest nights and the shortest days of the year coincide with the winter solstice. 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
Pearl City, Illinois, experiences its lowest temperatures in January, with an average peak of 24.8°F (-4°C) and a low of 12.9°F (-10.6°C).
The most humid month is January, with an average relative humidity of 87%.
The month with the least rainfall in Pearl City, Illinois, is January, when the rain falls for 5.3 days and typically collects 1.06" (27mm) of precipitation.
Throughout the year, in Pearl City, Illinois, there are 145.9 rainfall days, and 22.8" (579mm) of precipitation is accumulated.
January through April, October through December are months with snowfall in Pearl City, Illinois.
The month with the most snowfall in Pearl City is January, when snow falls for 13.1 days and typically aggregates up to 3.46" (88mm) of snow.
In Pearl City, Illinois, during the entire year, snow falls for 50.1 days and aggregates up to 13.62" (346mm) of snow.
The month with the least sunshine in Pearl City is January, with an average of 3.6h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Pearl City.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Pearl City, 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 and October, with an average relative humidity of 76%, are the least humid months.
May through September are months without snowfall.
The months with the highest UV index in Pearl City are May through August, with an average maximum UV index of 5.
June is the month with the most rainfall. Rain falls for 17.9 days and accumulates 3.43" (87mm) of precipitation.
The month with the longest days in Pearl City, Illinois, is June, with an average of 15h and 12min of daylight.
Pearl City's warmest month, July, registers temperatures that range from a high of 79.3°F (26.3°C) to a low of 62.8°F (17.1°C).
The months with the most sunshine in Pearl City are July and August, with an average of 9.7h of sunshine.
The month with the shortest days in Pearl City is December, with an average of 9h and 12min of daylight.
Average temperature
Pearl City, IL
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.8°F).
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure
Pearl City, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Pearl City, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.6mph - 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 April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Pearl City, IL
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall
Pearl City, IL
- Average rainfall in January:
1.06" - Average rainfall in February:
1.1" - Average rainfall in March:
1.34" - Average rainfall in April:
2.36" - Average rainfall in May:
2.76" - Average rainfall in June:
3.43"
- Average rainfall in July:
2.76" - Average rainfall in August:
1.77" - Average rainfall in September:
1.69" - Average rainfall in October:
2.09" - Average rainfall in November:
1.34" - Average rainfall in December:
1.1"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days
Pearl City, IL
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
12 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
17.9 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall
Pearl City, IL
The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Pearl City, IL
- Average snowfall days in January:
13.1 days - Average snowfall days in February:
11.3 days - Average snowfall days in March:
6.6 days - Average snowfall days in April:
2.5 days - Average snowfall days in May:
0.2 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:
1.1 days - Average snowfall days in November:
4 days - Average snowfall days in December:
11.3 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Pearl City, IL
- Average daylight in January:
9h and 30min - 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 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - 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 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
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 42min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
9h and 42min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 12min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Pearl City, IL
- Average sunshine days in January:
14.3 days - Average sunshine days in February:
12.9 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
10.5 days - Average sunshine days in June:
9.3 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
16.1 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index
Pearl City, IL
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Pearl City, IL
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility
Pearl City, IL
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
