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Contents
- The climate of Freeport
- The best time to visit Freeport
- The worst time to visit Freeport
- Spring weather in Freeport
- Summer weather in Freeport
- Autumn weather in Freeport
- Winter weather in Freeport
- 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
The climate of Freeport
Freeport, Illinois, located in the midwest region of the United States, is subjected to the Humid Continental Hot Summer climate as per the Köppen climate classification. This type of climate, denoted as Dfa, is characterized by substantial seasonal variations in temperature and consistent year-round precipitation.
Surface temperatures fluctuate dramatically between the seasons, with averages reaching a high of 79.7°F (26.5°C) in July and dipping to a low of 13.1°F (-10.5°C) in January. It is not just the temperatures that experience variation, but the levels of precipitation display a certain degree of diversity as well. Rainfall peaks in June with 2.87" (73mm) on average while December witnesses the least with only 0.83" (21mm).
On the topic of unique weather conditions, it is noteworthy that Freeport is susceptible to snowfall in its colder months, primarily from November through March, and peaking in January with 2.99" (76mm) on average. The town also experiences significantly shorter daylight hours from November to February, averaging between 9.1 and 9.8 hours, which gradually lengthen to reach a high of 15.2 hours in June.
Surface temperatures fluctuate dramatically between the seasons, with averages reaching a high of 79.7°F (26.5°C) in July and dipping to a low of 13.1°F (-10.5°C) in January. It is not just the temperatures that experience variation, but the levels of precipitation display a certain degree of diversity as well. Rainfall peaks in June with 2.87" (73mm) on average while December witnesses the least with only 0.83" (21mm).
On the topic of unique weather conditions, it is noteworthy that Freeport is susceptible to snowfall in its colder months, primarily from November through March, and peaking in January with 2.99" (76mm) on average. The town also experiences significantly shorter daylight hours from November to February, averaging between 9.1 and 9.8 hours, which gradually lengthen to reach a high of 15.2 hours in June.
The best time to visit Freeport
Taking into account temperature, sunshine, and rainfall, the ideal period for a visit to Freeport extends from May to September. These months offer moderate to high temperatures averaging from 68°F (20°C) to 79.7°F (26.5°C). In addition, these months also record higher daylight hours ranging from 14.6 hours to 15.2 hours, giving tourists plenty of time to explore. It is also during this period that the town experiences maximum sunshine averaging 8.4 to 9.7 hours a day.
The worst time to visit Freeport
Conversely, the least favorable months for a visit to Freeport are January and February. These months often see temperatures fall below freezing, averaging between 13.1°F (-10.5°C) to 16.7°F (-8.5°C). Coupled with snowfall of around 2.99 and 2.32" (59mm) respectively and shorter daylight hours, outdoor activities during these months can be significantly curtailed.
Spring weather in Freeport
Spring in Freeport runs from March to May, a transitional period that sees temperatures gradually rise from 43.9°F (6.6°C) to 68°F (20°C). The area also experiences increased rainfall during this period, with May recording an average of 2.6" (66mm). Wind speeds also start to decrease throughout the spring, ensuring generally calm and pleasant weather.
Summer weather in Freeport
Summer months in Freeport offer warm to hot conditions, with temperatures averaging from 76.6°F (24.8°C) to 79.7°F (26.5°C) between June and August. Despite being the hottest months, rainfall is relatively high, with June receiving up to 2.87" (73mm). This period also sees longer daylight hours, extending to 15.2 hours in June.
Autumn weather in Freeport
Autumn arrives in Freeport in September and stays until November. During this period, temperatures drop progressively from 72.7°F (22.6°C) in September to a much cooler 43.9°F (6.6°C) by November. Precipitation decreases during these months, with November registering an average of 1.14" (29mm).
Winter weather in Freeport
Winter in Freeport, lasting from December to February, is marked by cold conditions and substantial snowfall. Average temperatures sit between 13.1°F (-10.5°C) and 29.5°F (-1.4°C), making it the coldest time of the year. Snowfall in January averages 2.99" (76mm), while daylight hours are at their lowest, averaging between 9.1 and 10.6 hours per day.
Weather in January
January marks the beginning of the year with a characteristically snowy ambiance in Freeport, Illinois. It is distinguished by being one of the coldest months with a chilly scenario of 2.99" (76mm) of snowfall occurring over 11.3 days. Weather in January »
Weather in February
February continues the icy trend, albeit less snowy than January. This month sees a decrease in snowfall to 2.32" (59mm), offering a slight respite from the harsh winter. However, lower temperatures persist, maintaining the cold winter ambience. Weather in February »
Weather in March
The weather morphs gradually in March with a slight inclination towards more temperate conditions. This coincides with the arrival of daylight saving time, leading to the extension of daylight hours. Snowfall drastically descends to 1.26" (32mm), signaling the tapering off of winter. Weather in March »
Weather in April
By April, Freeport embraces spring, leaving the biting cold of winter behind. A significant leap is noticed in the level of rainfall, which rises to 2.17" (55mm), indicating the presence of frequent showers. Flowers begin to bloom, as do the spirits of the city's inhabitants. Weather in April »
Weather in May
May brings warmer weather, delighting inhabitants and visitors of Freeport. The hours of daylight reach their mid-year peak, and the clouds begin to retreat. The city buzzes with open-air affairs as people start indulging in outdoor activities. Weather in May »
Weather in June
June welcomes the beginning of the summer season in Freeport. The end of the school year coincides with peak daylight hours and an extended duration of sunshine, perfect for a family outing. Outdoor sports, picnics, and beach visits become popular among the residents. Weather in June »
Weather in July
July basks in the height of summer with the highest average high temperature of 79.7°F (26.5°C) recorded in Freeport. It's also the month with the maximum hours of sunshine per day, making it the warmest period of the year. The city graces visitors with picturesque sunny views. Weather in July »
Weather in August
As August unfolds, the weather conditions in Freeport remain somewhat consistent with July. Amidst the warm setting, the residents continue to enjoy the extravagance of summer. The suppressive heat somewhat dips in the evenings, introducing some relief. Weather in August »
Weather in September
In September, Freeport experiences the onset of autumn, a season celebrated for its vibrant foliage and pleasant weather. The temperatures begin to decline, and the city transitions from the intense heat of summer to more moderate conditions. Weather in September »
Weather in October
With the arrival of October, Freeport fully embraces the autumn spirit. The mild weather, with comfortable temperatures, creates a balanced atmosphere of warm days and cooler nights. The city turns into an artistic palette of reds, oranges, and yellows, offering residents and tourists a beautiful spectacle. Weather in October »
Weather in November
November is the herald of winter in Freeport as the city witnesses a perceptible dip in temperatures. However, the first snowfall may also sprinkle the city white, amounting to 1.5" (38mm), signaling the nearing winter. As the days become shorter and colder, indoor events and holiday preparations gain momentum. Weather in November »
Weather in December
December in Freeport marks the full-fledged arrival of winter. The city is often cloaked under 1.34" (34mm) of snow spread over 8.2 days, painting a scenic picture of the winter wonderland. With an air of festivities fueled by the holiday season, Freeport dons a cheerful spirit despite the cold weather conditions. Weather in December »
Updated: Jul 4, 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
What month is the coldest?
Freeport's January weather reaches an average high of 25.2°F (-3.8°C) and an average low of 13.1°F (-10.5°C), making it the coldest month.
What is the most humid month?
January is the most humid month, with an average relative humidity of 87%.
How much does it rain?
In Freeport, during the entire year, the rain falls for 138 days and collects up to 19.69" (500mm) of precipitation.
When does it snow?
January through April, October through December are months with snowfall.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 11.3 days and accumulates 2.99" (76mm) of snow.
How much does it snow?
In Freeport, during the entire year, snow falls for 41.8 days and aggregates up to 10.43" (265mm) of snow.
What is the month with the least sunshine?
With an average of 3.6h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST)?
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.
When it does not snow?
In Freeport, snow does not fall in May through September.
What is the month with the highest UV index?
May through August, with an average maximum UV index of 5, are months with the highest UV index.
What is the rainiest month in Freeport?
June is the month with the most rainfall. Rain falls for 16.8 days and accumulates 2.87" (73mm) of precipitation.
When are the longest days?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What month is the hottest?
The warmest time of the year is July, with temperatures averaging a high of 79.7°F (26.5°C) and a low of 62.8°F (17.1°C).
What are the months with the most sunshine?
July and August, with an average of 9.7h of sunshine, are months with the most sunshine.
What is the least humid month?
The least humid month is October, with an average relative humidity of 75%.
What is the driest month?
The month with the least rainfall is December, when the rain falls for 6.8 days and typically collects 0.83" (21mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 6min of daylight, December has the shortest days of the year.
Average temperature
Freeport, IL
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25.2°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 (13.1°F).
Average pressure
Freeport, 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:
29.96"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:
30.1"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
Freeport, IL
- Average wind speed in January:
9.8mph - 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:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Freeport, IL
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Freeport, IL
- Average rainfall in January:
0.91" - Average rainfall in February:
0.87" - Average rainfall in March:
1.06" - Average rainfall in April:
2.17" - Average rainfall in May:
2.6" - Average rainfall in June:
2.87"
- Average rainfall in July:
2.2" - Average rainfall in August:
1.69" - Average rainfall in September:
1.46" - Average rainfall in October:
1.89" - Average rainfall in November:
1.14" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is December (0.83").
Average rainfall days
Freeport, IL
- Average rainfall days in January:
4.9 days - Average rainfall days in February:
5 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (4.9 days).
Average snowfall
Freeport, IL
The month with the highest snowfall is January (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Freeport, IL
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
2.1 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:
0.5 days - Average snowfall days in November:
3.5 days - Average snowfall days in December:
8.2 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Freeport, IL
- Average daylight in January:
9h and 3min - 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 4min - 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 0min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
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 6min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 2min - 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
Freeport, IL
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
13.2 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Freeport, 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
Freeport, IL
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Freeport, 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).
Freeport, Illinois, USA
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