Climate and monthly weather forecastGary, IN

Climate and monthly weather forecast
The climate of Gary
Typically, Gary, Indiana fits into the Dfa zone according to the Köppen climate classification, characterizing it as having a humid continental climate with no dry season and hot summers. Geographic positioning pins Gary within the Midwestern United States, which is susceptible to a wide variety of weather occurrences due to the region's large seasonal temperature variations.Throughout the year, the city experiences significant swings in temperature, reaching its peak in July with highs of 79.3°F (26.3°C) tumbling to a chilling low of 19.8°F (-6.8°C) in January. A moving pattern of relative humidity arises, ranging from 74% to as high as 82%. Unsurprisingly, the winter months witness the highest humidity levels.
With regard to rainfall, the incorporation of the data illustrates an escalation from January through to June, peaking around the latter part of spring with a maximum amount of 3.66" (93mm). The volume then delicately tapers off through until December. A count of rainfall days picks up from January, arriving at a pinnacle in July and then slowly diminishes, signifying a mirrored pattern to the rainfall volume. Interestingly, the occurrence of snowfall is largely restricted from December to March, with no incidence from May through to November.
The Best Time to Visit Gary
Heritage attractions, natural parks or the myriad of events hosted in the city throughout the year sum up some of the reasons for visiting Gary, Indiana. If prioritizing pleasurable warmth and abundant sunshine, then June to August promise the optimal period of visitation. Average temperature ranges between 74.7°F (23.7°C) to 60.6°F (15.9°C) during this period with an average of 78.4°F (25.8°C) in August. The city receives nearly 10.3 hours of sunshine per day during these months, projecting a bright and sunny atmosphere for outdoors activities.The Worst Time to Visit Gary
Adverse winter conditions from December to February could hinder the travel experience to Gary, Indiana. These months host the lowest temperatures, with January’s low averaging 19.8°F (-6.8°C), while high temperatures only get up to between 30°F (-1.1°C) and 36.1°F (2.3°C). Snowfall during these months reaches between 1.93" (49mm) to 3.11" (79mm), further intensifying the chills. Limited sunlight also could be a deterrent, falling as low as 4 hours per day in December.Spring Weather in Gary
Spring illustrates a thawing from the chilling winter with temperatures ascending from 43.7°F (6.5°C) in March to 64.9°F (18.3°C) by May. Rainfall showers down quite substantially during this season, intensifying from 1.3" (33mm) to 3.35" (85mm) from March to May. Consequently, the number of rainfall days shoots up to its peak at 17.4 by May. Although moderate snowfall prevails in March, by April, it diminishes to less than an inch, ultimately disappearing in May.Summer Weather in Gary
The summer months in Gary, June through August, experience a surge in temperature peaking at 79.3°F (26.3°C) in July. Daily sunshine hours also reach a zenith during this season, escalating to 10.5 hours in August. There is a slight dip in humidity from 79% to 78%, ensuring relatively comfortable conditions despite the increase in temperature. Rainfall continues at a high with an average of between 3.15" (80mm) and 2.8" (71mm).Autumn Weather in Gary
Autumn in Gary, September to November, witnesses a gradual cooldown, with temperatures descending from 72.9°F (22.7°C) in September to a low of 46.6°F (8.1°C) by November. Days become shorter, sunlight reduces to 5.1 hours per day, and the number of rainfall days reduces, concluding the season with a minimal 9.6 days of rainfall in November.Winter Weather in Gary
Winter in Gary, from December to February, is characterized by low temperatures, the coldest being in January with average lows of 19.8°F (-6.8°C). Snow makes its presence between these months with a notable peak of 3.11" (79mm) in December. Along with reduced sunlight time down to 4 hours in December, winter brings with it the most significant weather changes of the year.Weather in January
The year in Gary, Indiana, kicks off with January, a month known for chilly temperatures and snowfall. Weather conditions continue to display winter characteristics from the previous month. The temperatures are typically on the lower side, with the most significant snowfall registered, 3.11" (79mm). Weather in January »Weather in February
As Gary transitions into February, the city experiences a subtle change in weather conditions. February carries forward the low temperatures from January, but with less snowfall. The mercury begins to inch up slightly, hinting towards the upcoming spring season. Weather in February »Weather in March
In March, Gary, Indiana, begins to bid goodbye to the harsh winter. The month sees an increase in temperature, reduced snowfall, and fewer snowfall days. A noticeable change is the increase in daylight hours, and the rainfall reaches 1.3" (33mm), signifying the commencement of the spring season. Weather in March »Weather in April
As Gary enters April, the city is in full bloom. The weather warms up significantly from March, and the city is devoid of snowfall. April also brings with it an increase in rainfall, a consequence of the warmer temperatures. The city witnesses longer daylight hours, accommodating more outdoor activities. Weather in April »Weather in May
May ushers in significantly warmer temperatures in Gary, Indiana. The pleasant spring gives way to the early onset of summer. Rainfall peaks during May at 3.35" (85mm), the highest in the year, indicating frequent spring showers. The lengthened daylight hours provide ample opportunities for residents to bask in the warming sunshine. Weather in May »Weather in June
June in Gary marks the official start of summer. From May, citizens see an increase in temperature and a decrease in rainfall. It is during June that the city experiences the longest daylight hours, which suit many outdoor activities. Weather in June »Weather in July
July portrays the quintessential summer weather in Gary, Indiana. Coming from June, an increase in temperature makes July the hottest month of the year, with the highest temperature peaking at 79.3°F (26.3°C). July also carries the summer torch with extended daylight hours. Weather in July »Weather in August
In August, the summer reigns continue in Gary. The weather is similar to that of July, with high temperatures and an abundance of sunshine. August slightly tones down the heat levels from July, providing a semblance of respite. The extended daylight hours persist, infusing the city with vibrancy and energy. Weather in August »Weather in September
September heralds the transition from summer to autumn in Gary, Indiana. The weather remains warm, although temperatures start to dip slightly from August. There is a decrease in rainfall and daylight hours, indicating the onset of the fall season. Weather in September »Weather in October
October brings visible changes to Gary's weather. A notable drop in temperature from September ushers in cooler weather. There is also a marked reduction in daylight hours, heralding the onset of shorter days. The city also observes a drop in sunshine hours, signaling the approach of winter. Weather in October »Weather in November
Gary, Indiana, experiences a stark shift in weather as it breezes into November. The weather in November witnesses a further dip in temperature from October, an obvious sign of the looming winter. The first traces of snowfall are noticed this month. Weather in November »Weather in December
December in Gary is characterized by cold temperatures, indicating the official commencement of winter. The city witnesses a drop in temperatures from November, and an uptick in snowfall, accountable for the winter holiday scenes. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Gary, IN
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (30°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Gary, 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
Gary, IN
- Average wind speed in January:
11.4mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
7mph - Average wind speed in August:
7mph - Average wind speed in September:
8.1mph - Average wind speed in October:
10.1mph - Average wind speed in November:
11mph - Average wind speed in December:
10.6mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Gary, IN
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Gary, IN
- Average rainfall in January:
1.14" - Average rainfall in February:
1.22" - Average rainfall in March:
1.3" - Average rainfall in April:
2.52" - Average rainfall in May:
3.35" - Average rainfall in June:
3.66"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days
Gary, IN
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
18.3 days - Average rainfall days in August:
16 days - Average rainfall days in September:
13.8 days - Average rainfall days in October:
14.2 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
8.7 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Gary, IN
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Gary, IN
- Average snowfall days in January:
13.4 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
1.8 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:
0.4 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
9.6 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Gary, 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 36min - Average sunshine in February:
3h and 54min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 42min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Gary, IN
- Average sunshine days in January:
13.3 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
12.1 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
11.4 days - Average sunshine days in September:
13 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
15.1 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index
Gary, 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
Gary, IN
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Gary, IN
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





