Climate and monthly weather forecast
Elgin, IL

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The climate of Elgin

Situated in the midwestern region of the United States, Elgin, Illinois, operates under a Dfa climate according to the Köppen climate classification. The Dfa climate encapsulates a humid continental climate, defined by no dry season, with a relatively hot summer.

Elgin's annual weather pattern sees a striking difference in temperatures from winter to summer, offering a wide range. January exhibits the coldest temperatures, with low averages sitting around 15.4°F (-9.2°C) and highs reaching up to 27.3°F (-2.6°C). Transitioning into the height of summer, July records the warmest temperatures with an average low of 63.9°F (17.7°C), peaking at a hot 80.6°F (27°C). As the months progress, the temperature gradually decreases into autumn and winter.

Humidity remains relatively stable, fluctuating lightly from 76 to 84%. A consistent pattern characterizes precipitation, with rainfall amounting between 1.14" (29mm) to 3.03" (77mm) across the year. Interaction with significant snowfall is also seen from December to March with peaks reaching 3.62" (92mm) in January.

The most sunshine in Elgin radiates between June and August, recording up to 9.8 hours per day. However, this period also sees the least cloud cover - notable in July with cloud presence at 34% - signifying clearer skies during this period. On the other hand, the winter months record shorter daylight hours and a higher density of cloud coverage.

The best time to visit Elgin

For those who appreciate mild, comfortable temperatures, the best time to visit Elgin would be during the late spring and early summer months. From May to June, the average high temperature hovers between 67.6°F (19.8°C) and 76.6°F (24.8°C). Along with these inviting temperatures, Elgin boasts long days with an average daylight duration exceeding 14.5 to 15.2 hours. Furthermore, the weather during these months is typically sunny, with average sunshine hours per day reaching 8.3 to 9.5 hours.

The worst time to visit Elgin

Deciding the worst time for visiting Elgin depends largely on an individual's weather preferences. However, for those who are unenthusiastic about cold weather and limited sunshine, the winter months of December through February could be considered less appealing. During these months, the average high temperature falls between 27.3°F (-2.6°C) and 33.4°F (0.8°C) with lows dipping down to 15.4°F (-9.2°C) in January. Daylight is also significantly reduced, with an average of 9.2 hours in December.

Spring weather in Elgin

Spring in Elgin brings a pleasant shift in climate after the chilling winter months. March typically marks the end of the snowy season with a decline to just 1.22" (31mm) of snowfall. As the season progresses from March to May, temperatures rise from an average high of 44.2°F (6.8°C) to 67.6°F (19.8°C). Spring also experiences an extension in daylight hours with an increase from 12 hours to 14.6 hours from March to May.

Summer weather in Elgin

Summers in Elgin are characteristically warm with temperature highs between 76.6°F (24.8°C) in June and 80.6°F (27°C) in July. It's also the time of year with the longest days, with daylight hours peaking at 15.2 hours in June. The warmth of the summer months is complemented by a surge in sunshine hours, escalating to an impressive 9.8 hours per day in July.

Autumn weather in Elgin

Autumn in Elgin sees a gradual decrease in temperature from the summer highs. September introduces the season with an average high of 73°F (22.8°C), falling by October to a milder 59.9°F (15.5°C). By the end of November, temperatures dip significantly with average highs at 45.1°F (7.3°C). Autumn weather in Elgin also indicates a change in precipitation, with rainfall reducing to an average of 1.14" (29mm) by November.

Winter weather in Elgin

Winter in Elgin is defined by cold temperatures and elevated amounts of snowfall. Starting from December, average high temperatures hover around the freezing point, maintaining at 27.3°F (-2.6°C) in January, and rising slightly to 33.4°F (0.8°C) by February. Corresponding low temperatures can reach a shivering 15.4°F (-9.2°C) in January. The season also carries a fair amount of snow, with January seeing the maximum average snowfall of 3.62" (92mm).

Weather in January

January marks the coldest month in Elgin, Illinois. High temperatures average at a frosty 27.3°F (-2.6°C), while lows can plummet to 15.4°F (-9.2°C), offering chills that penetrate through even the thickest winter clothing. Weather in January »

Weather in February

February continues with substantially cold conditions in Elgin. While there is a slight increase from January's frigid conditions, it is not enough to consider it a breakthrough from winter's grasp. Due to the persistently low temperatures, snowfall remains prevalent, adding to the white wintertime vista. Weather in February »

Weather in March

March signifies a transitional month regarding the weather in Elgin. Conditions start to soften with warmer temperatures, which is a welcome change from the biting cold of the previous months. This transition brings occasional light showers and a reduction in snowfall. Weather in March »

Weather in April

In April, spring blossoms fully in Elgin, bringing with it milder temperatures and longer hours of daylight. However, the increase in temperature ushers in a high chance of rainfall, with a monthly average of 2.8" (71mm). Interestingly, April boasts the most rainfall days, with a monthly average of 15.9 days. Weather in April »

Weather in May

May in Elgin documents a significant shift in weather conditions. The arrival of spring's peak marks a farewell to the cold and mellow welcoming of the warmth. Rainfall persists albeit with reduced frequency, maintaining a stable supply of water for flora and fauna. Weather in May »

Weather in June

The weather in June is synonymous with the cheerful arrival of summer in Elgin. Clear skies, warm temperatures, and reduced rainfall characteristics define this period. Reduced humidity cooperates with the rising temperatures, producing a pleasantly warm climate. Weather in June »

Weather in July

July underlines the middle of summer in Elgin. On average, this month is the warmest, with temperatures hitting a peak of 80.6°F (27°C). This period promises plenty of sunshine and longer daylight hours, suitable for various outdoor activities. Weather in July »

Weather in August

August in Elgin characterizes the tail end of summer. Although temperatures begin to subside compared to July, they continue to thrive in the high range, extending the warmth of the summer season. Rainfall begins to pick up slightly, yet the generally dry conditions persist. Weather in August »

Weather in September

September in Elgin observes the onset of fall. As summer dissipates, autumn takes its course with milder temperatures and sporadically raining skies. The vivid green nature backdrop starts to transform into a kaleidoscope of fall colors. Weather in September »

Weather in October

October in Elgin translates into the prime of autumn. Signifying a complete departure from summer, the city is cloaked in multi-hued foliage, creating a picturesque setting. Falling temperatures signal a transition towards the colder end of the year. Weather in October »

Weather in November

The arrival of November in Elgin suggest the outset of the colder season. Rapid temperature changes gradually push the city towards winter. The first frost usually appears during this month, shaping the path for the upcoming winter. Weather in November »

Weather in December

December in Elgin brings with it a climatic close to the year. Winter fully sets in, throttling down temperatures to a low average of 23.4°F (-4.8°C). The month introduces high possibilities of snowfall, leading to striking winter scenes. Weather in December »
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

January stands out as Elgin's coldest month, with temperatures ranging between an average high of 27.3°F (-2.6°C) and a low of 15.4°F (-9.2°C).

What is the most humid month?

January is the most humid month, with an average relative humidity of 84%.

How much does it rain?

In Elgin, during the entire year, the rain falls for 149.2 days and collects up to 24.02" (610mm) of precipitation.

When does it snow?

January through May, October through December are months with snowfall.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 12.9 days and typically aggregates up to 3.62" (92mm) of snow.

How many days does it snow?

In Elgin, during the entire year, snow falls for 47.4 days and aggregates up to 13.07" (332mm) of snow.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 3.6h of sunshine.

When is the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

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.

What is the rainiest month?

The month with the most rainfall is June, when the rain falls for 16.9 days and typically aggregates up to 3.03" (77mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

June has the longest days of the year, with an average of 15h and 12min of daylight.

What are the warmest months?

The warmest period tends to be July, when average temperatures fluctuate between a high of 80.6°F (27°C) and a low of 63.9°F (17.7°C).

What month has the most sunshine?

With an average of 9.8h of sunshine, July has the most sunshine of the year.

What is the month with the highest UV index?

July and August, with an average maximum UV index of 6, are months with the highest UV index in Elgin.

What is the least humid month?

The least humid month in Elgin, Illinois, is October, with an average relative humidity of 75%.

What is the driest month?

December is the month with the least rainfall. Rain falls for 8.1 days and accumulates 1.1" (28mm) of precipitation.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

Average temperature
Elgin, IL

Average temperature - Elgin, IL

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

Average pressure
Elgin, IL

Average pressure - Elgin, IL

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
Elgin, IL

Average wind speed - Elgin, IL

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity
Elgin, IL

Average humidity - Elgin, IL

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).

Average rainfall
Elgin, IL

Average rainfall - Elgin, IL

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").

Average rainfall days
Elgin, IL

Average rainfall days - Elgin, IL

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).

Average snowfall
Elgin, IL

Average snowfall - Elgin, IL

The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Elgin, IL

Average snowfall days - Elgin, IL

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Elgin, IL

Average daylight / Average sunshine - Elgin, IL

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).

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days
Elgin, IL

Average sunshine days - Elgin, IL

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).

Average visibility
Elgin, IL

Average visibility - Elgin, IL

The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).

Elgin, Illinois, USA

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