The climate of Oak Lawn
Oak Lawn, situated in
Illinois, USA, lies within a Humid continental climate region, under the Köppen climate classification denoted as Dfa. This signifies hot summers and no dry season. Pervading temperatures in Oak Lawn vary considerably during the yearly cycle, and the region regularly experiences humidity, rain, and snow.
The annual high temperatures fluctuate from 29.5°F (-1.4°C) in
January to 81°F (27.2°C) in
July, while the lows oscillate from 18.9°F (-7.3°C) in January to 66.6°F (19.2°C) in July. Similarly, the relative humidity levels in the area stay quite steady throughout the year, maintaining between 72% in
October and 82% in January and
February. The total yearly rainfall averages 2.21" (56mm), with the wettest month being
May, receiving around 3.07" (78mm) of precipitation, and
December getting the least, at approximately 1.02" (26mm). Meanwhile, snowfall is distinctly seasonal, wholly taking place from
November through
April, with the heaviest snow in February, totaling 3.07" (78mm).
An examination of sunlight hours shows that
June offers the longest days, with 15.2 hours of daylight, contrarily, the shortest days happen in December, having about 9.2 hours. Consistent with this, the UV index reaches its peak of 6 between June and
August, while it descends to 1 in December. Meanwhile, wind speeds are relatively moderate throughout the year, reaching their highest average rate of 10.6mph (17.1km/h) in January and decreasing to their lowest of 6.5mph (10.5km/h) in August.
Overall, the climate in Oak Lawn features a distinctive seasonal pattern, marked by hot summers and cold winters, regular rainfall and snowfall, and consistent humidity levels. This results in diverse weather patterns throughout the year.
The best time to visit Oak Lawn
May to
September marks an advantageous period to visit
Oak Lawn. This phase experiences warm to mildly hot temperatures, with highs ranging from 66.4°F (19.1°C) to 81°F (27.2°C) and lows hovering from 51.8°F (11°C) to 66.6°F (19.2°C). This period is also the sunniest, offering between 10.3 hours to 10.5 hours of sunshine per day from
June to
August. This agreeable weather makes it an optimal timeframe for outdoor activities.
The worst time to visit Oak Lawn
The period from
November through
February can be considered the least desirable for visiting
Oak Lawn, as it experiences the coldest temperatures. Average highs sink to between 29.5°F (-1.4°C) and 46.2°F (7.9°C), and lows can plunge to from 26.4°F (-3.1°C) to 35.1°F (1.7°C). Additionally, snowfall is highest across these months, thereby severely restricting outside activities.
Spring weather in Oak Lawn
Spring in
Oak Lawn transpires from
March to
May. This season shows a progressive climate shift as temperatures climb from an average high of 44.2°F (6.8°C) and low of 32.4°F (0.2°C) in March to a high of 66.4°F (19.1°C) and low of 51.8°F (11°C) in May. Further, rainfall tends to intensify in this season, culminating in May with an average of 3.07" (78mm), and daylight hours increase, reaching 14.6 hours by season's end.
Summer weather in Oak Lawn
June through
August denotes
Oak Lawn's summer months. These are the hottest and sunniest months, with average highs oscillating from 76.3°F (24.6°C) to 81°F (27.2°C) and lows from 61.5°F (16.4°C) to 66.6°F (19.2°C). June offers the longest daylight hours with 15.2 hours. Nonetheless, summers also bring substantial rainfall, averaging around 2.89" (73mm) per month.
Autumn weather in Oak Lawn
Autumn in
Oak Lawn, running from
September to
November, manifests a gradual cooling trend, with an average high temperature decreasing from 73.6°F (23.1°C) in September to 46.2°F (7.9°C) in November. Equally, lows dwindle from 59.2°F (15.1°C) to 35.1°F (1.7°C) within the same timeframe. Despite rainfall reducing to an average of 1.69" (43mm) monthly, the sunshine hours decrease significantly, dwindling from 9.1 hours in September to 5.1 hours in November.
Winter weather in Oak Lawn
Winter months in
Oak Lawn,
December through
February, amass the coldest temperatures and substantial snowfall. Average highs drop to between 29.5°F (-1.4°C) and 35.2°F (1.8°C), while lows tumble to from 26.4°F (-3.1°C) to 18.9°F (-7.3°C). Moreover, these cold months also observe an average snowfall amounting to 2.52" (64mm). Hence, Oak Lawn's winter season is characterized by high humidity, low sunshine hours, and cold temperatures.
Weather in January
January in
Oak Lawn,
Illinois is characterized by a chilly atmosphere with the lowest temperature in the year reaching 18.9°F (-7.3°C). A steady pattern of snowfall gives the city a white blanket, making it a winter wonderland.
Weather in January » Weather in February
Despite a slight increase in temperature,
February remains quite cold, resembling
January's weather conditions. Snow continues to rule the forecast with residents bracing for more inches. The daylight hours increase, yet the days are still relatively short.
Weather in February »Weather in March
March signals the arrival of spring, and the transition in weather from chilly winters to slightly warmer forecasts is apparent. The snow starts to diminish, giving way to rain as the primary form of precipitation. High humidity remains persistent, contributing to the dampness in the atmosphere.
Weather in March »
Weather in April
April brings a substantial uptick in temperature to
Oak Lawn, marking firm arrival of Spring. There's a substantial increase in rainfall from 1.3" (33mm) to 2.32" (59mm), making the city feel fresh, albeit a bit damp. The extended daylight hours provide ample opportunities for outdoor activities.
Weather in April » Weather in May
May experiences considerable warming in
Oak Lawn, with pleasant temperatures offering a break from the rainy
April. Signifying the advent of summer, the city enjoys maximum daylight hours. The weather is fairly consistent, fetching stable days.
Weather in May » Weather in June
Oak Lawn welcomes the start of summer in
June with significantly heightened temperatures. The days become the longest of the year, with sunshine dominating most of the daylight hours. Humidity levels rise slightly, lending an increased warmth to the extended days.
Weather in June »
Weather in July
July is the height of summer in
Oak Lawn, basking in high temperatures reaching up to 81°F (27.2°C). Extended daylight hours and high UV index necessitate protection against sunburn. Despite the sometimes intense heat, the weather remains fairly consistent, keeping the city bustling with activity.
Weather in July » Weather in August
In
August,
Oak Lawn continues to simmer in summer heat, albeit a slight decrease in temperature. Slightly higher humidity raises the heat index, making days feel hotter than actual. Despite the decrease in sunshine hours, days remain long and filled with light.
Weather in August »Weather in September
September rings the curtain down on summer, bringing a considerable reduction in temperature in
Oak Lawn. The onset of fall can be felt with cooler weather and shorter days. Rainfall decreases, providing relief to those weary of the summer showers.
Weather in September »
Weather in October
October in
Oak Lawn is a beautiful spectacle with fall colors adorning the city's landscapes. Temperatures further drop, bringing in cool and crisp weather. Rainfall continues its downward trend, paving the way for clear days ahead.
Weather in October » Weather in November
November witnesses a marked drop in temperature, signaling the onset of winter in
Oak Lawn. The first hints of snow appear, replacing the rain and giving the city a frosty look. Fall colors start giving way to white snow, altering the cityscape.
Weather in November » Weather in December
December marks the introduction of intense winter in
Oak Lawn,
Illinois with temperatures dropping to 35.2°F (1.8°C). Snowfall dominates the landscape, providing a white Christmas to the city. Despite the falling temperature and decreasing daylight, the city glows with festive lights and holiday spirit.
Weather in December »