Climate and monthly weather forecastChesterton, IN
Climate and monthly weather forecast
The climate of Chesterton
Chesterton, Indiana, USA, lies within the Dfa climate zone, following the Köppen climate classification. This signifies a humid continental climate with no dry season and hot summers. Positioned relatively inland, yet near the shores of Lake Michigan, the town's weather feels the effects of both geographical elements.Month-to-month shifts in weather parameters are considerable. From January, Chesterton gradually warms until reaching peak temperatures between July and August. During these summer months, the temperature ranges from 65.7°F (18.7°C) to 78.1°F (25.6°C). The cold clasp of winter returns by December, with temperatures dropping to between 20.5°F (-6.4°C) and 36.3°F (2.4°C).
The area is quite humid, with relative humidity averaging around 80% across the year. Rainfall is distributed fairly evenly throughout the year, ranging from 1.14" (29mm) to 3.54" (90mm). The wettest months are from April to June, with rain often accompanied by relative humidity above 78%.
Visibility remains uniform year-round, consistently around 6 miles, regardless of the seasonal shifts. Wind speed too, sees minor fluctuations, with average speeds wavering from 7.3mph (11.7km/h) to 12mph (19.3km/h). January and December witness the highest wind speeds.
The best time to visit Chesterton
The months from May to September present the best time to visit Chesterton. Temperatures during these months range from 64.2°F (17.9°C) to 78.1°F (25.6°C), offering pleasant conditions for outdoor activities. In particular, June, July, and August, with 9.8 to 10.3 hours of sunshine per day and sea temperatures from 52°F (11.1°C) to 70°F (21.1°C), provide prime conditions for beach activities. However, these months also hold the highest rainfall figures, from 2.87" (73mm) to 3.54" (90mm), so visitors should keep rain gear handy.Rainfall records decrease from September onwards, making early autumn an ideal period for those who prefer drier conditions. The temperature, though, follows suit, falling from 71.8°F (22.1°C) in September to 59.7°F (15.4°C) in October.
The worst time to visit Chesterton
The winter months from December to February can be severe in Chesterton. Sub-zero temperatures are common, dropping as low as 20.5°F (-6.4°C) in January, the coldest month. Snow is typically seen from December through February, with December receiving the heaviest snowfall, up to 1.77" (45mm). Moreover, the sea temperature also drops to its lowest, between 37°F (2.8°C) and 41°F (5°C).Another factor to consider is the reduced daylight hours, ranging from 9.2 to 10.6 hours, and a decrease in sunshine duration, down to 3.3 to 3.8 hours. Consequently, these darker, colder months might deter visitors who prefer warmer, sunnier conditions.
Spring weather in Chesterton
As Chesterton transitions from winter into spring, weather conditions undergo dramatic changes. From March to May, temperatures rise steadily from 31.8°F (-0.1°C) to 64.2°F (17.9°C). Rainfall increases during this period, with May being the wettest month, recording an average rainfall of 3.31" (84mm) spread over 16.3 days.The increase in temperature coincides with a rise in relative humidity, often pushing the value above the 78% mark. Sunshine duration expands during this phase, starting at 6 hours in March and reaching up to 8.7 hours in May. Despite the increase in humidity and rainfall, the ascending temperature makes spring a beautiful time to experience Chesterton's colorful blooms.
Summer weather in Chesterton
Summer, from June through August, presents Chesterton in full sun-splashed glory. Temperatures during these months range from 71.8°F (22.1°C) to 78.1°F (25.6°C) with an average sea temperature between 52°F (11.1°C) and 70°F (21.1°C). Rainfall ranges from 2.87" (73mm) to 3.54" (90mm) per month, spread across 16.1 to 17.8 days.Days are long and filled with sunlight, with daylight hours peaking at 15.2 in June. Sunshine, too, reaches its maximum, offering a bountiful 9.8 to 10.4 hours per day. With relatively manageable humidity, summer in Chesterton creates an excellent platform for a wide range of outdoor activities.
Autumn weather in Chesterton
Autumn witnesses a substantial decrease in temperature, dropping from 71.8°F (22.1°C) in September to 46.4°F (8°C) by November. Along with the temperature, sea temperatures also decline, moving from 66°F (18.9°C) in September to 46°F (7.8°C) in November.While rainfall takes a drop too, from 2.13" (54mm) in September to 1.18" (30mm) in November, the frequency of rainy days remains to an average of 10.2 to 14.3 days per month. Sunshine hours fall from 8.9 in September to just 4.9 hours in November. Despite the decline in these parameters, autumn paints Chesterton in vibrant hues, making it a captivating time to visit.
Winter weather in Chesterton
Winter in Chesterton is characterized by cold temperature, frequent snowfall, and limited daylight. December to February sees the thermometer dip between 20.5°F (-6.4°C) and 36.3°F (2.4°C), accompanied by an average sea temperature between 37°F (2.8°C) and 39°F (3.9°C). Snowfall is most prominent in December and January, with totals reaching 1.77" (45mm) and 3.11" (79mm), respectively.Daylight hours are at their shortest, offering merely 9.2 to 10.6 hours. Sunshine, as well, dwindles down to 3.3 to 3.8 hours. However, the wintry panorama and holiday festivities make Chesterton's winter an enchanting experience for the right visitor.
Weather in January
Chesterton, Indiana greets the new year with veritable winter conditions. The weather displays a blend of cold temperatures, a fair amount of snow, and limited daylight hours. With average snowfall measuring 3.11" (79mm), January shares the winter splendor. Weather in January »Weather in February
Moving into February, the winter scene in Chesterton remains mostly unchanged from January. The chilly temperatures continue to hold, but there's a barely noticeable increase in daylight hours as the days start to stretch somewhat longer. Weather in February »Weather in March
The season transition starts to become more palpable during March in Chesterton. The weather gradually warms up, with the snowfall decreasing, signifying the impending arrival of spring. As the temperatures climb to an average high of 43.3°F (6.3°C), winter's frosty grip loosens. Weather in March »Weather in April
Chesterton in April fully embraces the spring season. The weather is marked by warmer temperatures, more sunshine, and less snowfall. Unraveling from winter's grasp, the spectrum of weather conditions broadens. Notably, rainfall measures 2.4" (61mm), thus encouraging the blossoming of native flora. Weather in April »Weather in May
May's weather in Chesterton presents a peek into the forthcoming summer. The temperature adopts a noticeably warmer tone, and the humidity starts to climb. Nevertheless, May's most definitive characteristic is its high rainfall, recording 3.31" (84mm), a clear sign of the increase in precipitation. Weather in May »Weather in June
June marks the advent of summer in Chesterton, characterized by long daylight hours and rising temperatures. Sunshine becomes integral to the daily weather with longer daylight hours levying an energized outdoor atmosphere. Nevertheless, the weather begins to tilt towards the humid side, fueling afternoon thunderstorms quite frequently. Weather in June »Weather in July
July holds the stature of being the warmest month in Chesterton, a true display of the summer season in the city. The weather experiences high temperatures, extended daylight hours, and heightened humidity levels. The month records the maximum average temperature of 78.1°F (25.6°C), reflecting the summer season's zenith. Weather in July »Weather in August
As August progresses, the temperatures in Chesterton reveal a slight dip, marking the summer's gradual wind-down. The weather maintains a warm atmosphere along with moderated rainfall and balanced humidity levels. Nonetheless, even with a slight reduction in temperatures, August stands parallel to July with its peak temperatures. Weather in August »Weather in September
September in Chesterton puts forth a notable change in weather patterns, acting as a bridge between summer and fall. The temperature begins to cool down, marking the commencement of the autumn equinox. The weather presents comfortable temperatures, making it an ideal month for outdoor activities. Weather in September »Weather in October
In October, the weather in Chesterton dives into the heart of the fall season. The temperatures take on a cooler tone, with the changing leaves painting the town in vibrant autumn hues. Though cooler, October's weather remains mild and enjoyable, encouraging exploration and enjoyment of the area's natural beauty. Weather in October »Weather in November
November witnesses a further drop in temperature in Chesterton, serving as a signpost for the impending arrival of winter. The weather exhibits more chilly days and fewer hours of daylight. Surprisingly, November sees reduced rainfall, measuring a more moderate 1.18" (30mm). Weather in November »Weather in December
December brings in the winter festivities and weather in Chesterton. Temperatures drop, snow returns, and daylight hours shorten. With an average snowfall of 1.77" (45mm), winter weathers gets established and signifies the imminent holiday season. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Chesterton, IN
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (30.2°F).
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Chesterton, IN
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Chesterton, IN
- Average wind speed in January:
12mph - Average wind speed in February:
11.4mph - Average wind speed in March:
10.7mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.2mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.5mph - Average wind speed in October:
10.6mph - Average wind speed in November:
11.5mph - Average wind speed in December:
11.4mph
The windiest month (with the highest average wind speed) is January (12mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity
Chesterton, IN
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Chesterton, IN
- Average rainfall in January:
1.14" - Average rainfall in February:
1.18" - Average rainfall in March:
1.3" - Average rainfall in April:
2.4" - Average rainfall in May:
3.31" - Average rainfall in June:
3.54"
- Average rainfall in July:
2.95" - Average rainfall in August:
2.87" - Average rainfall in September:
2.13" - Average rainfall in October:
2.09" - Average rainfall in November:
1.18" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are January and December (1.14").
Average rainfall days
Chesterton, IN
- Average rainfall days in January:
7.1 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
16.1 days - Average rainfall days in September:
14 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.1 days).
Average snowfall
Chesterton, IN
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Chesterton, IN
- Average snowfall days in January:
14.1 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
5.9 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:
0.2 days - Average snowfall days in November:
4.5 days - Average snowfall days in December:
10.3 days
The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature
Chesterton, IN
The best month for swimming (with the highest average sea temperature) is August (70°F).
The coldest months (with the lowest average sea temperature) are February, March and April (37°F).
Average daylight / Average sunshine
Chesterton, IN
- Average daylight in January:
9h and 36min - 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 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - 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 54min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 18min - Average sunshine in February:
3h and 42min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 6min - Average sunshine in November:
4h and 54min - Average sunshine in December:
3h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days
Chesterton, IN
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
11 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
12 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
13.8 days - Average sunshine days in October:
13.8 days - Average sunshine days in November:
15.4 days - Average sunshine days in December:
13.1 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is July (10.7 days).
Average UV index
Chesterton, IN
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Chesterton, IN
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Chesterton, IN
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).





