Climate and monthly weather forecastCarmel, IN
Climate and monthly weather forecast
The climate of Carmel
Positioned in the Midwestern United States, Carmel, Indiana experiences a Humid subtropical climate without a dry season, following the Köppen Climate Classification Cfa. This environment promises weather changes over the year with a variety of warm to cold conditions. Throughout Carmel's calendar year, the temperatures fluctuate from lows of 20.5°F (-6.4°C) in January to the peak average high of 81.5°F (27.5°C) in July. Relative humidity in Carmel remains high, ranging approximately from 74% to 83%. The city receives different levels of rainfall each month, with the least precipitation generally accruing in February at 0.79" (20mm), while the highest rainfall takes place in May, amounting to 1.89" (48mm) on average.Carmel experiences snow falling with measurable accumulation primarily in winter months, with an average of 1.22" (31mm) in January. The intensity of the sun fluctuates through the year, presenting a consistent variation in UV index from 1 in December to 6 from June to August. The city enjoys hours of daylight extending from a minimum of 9.4 hours in December to as many as 15 hours in June. Those seeking the most prolonged sunshine duration would find it in June and July with 10.1 hours per day.
The best time to visit Carmel
Optimal visitation to Carmel, Indiana depends significantly on visitors' meteorological preferences. Nonetheless, for those who enjoy milder temperatures, the period from May to September provides a comfortable range. Within these months, the average daily high temperature varies between 71.6°F (22°C) and 81.5°F (27.5°C), while overnight lows range from 55.2°F (12.9°C) to 65.5°F (18.6°C). Visitors also enjoy extended daylight hours ranging from a high of 14.4 hours per day in May to 12.4 hours in September.The worst time to visit Carmel
For travelers who might not find affection for lower temperatures, the period from December to February in Carmel could be less appealing. During this time, the average high temperature ranges from 32.2°F (0.1°C) to 36.9°F (2.7°C), while the lows register between 20.5°F (-6.4°C) and 24.4°F (-4.2°C). Daylight hours are also at their shortest, with the city experiencing 9.4 hours to 10.7 hours of daylight.Spring weather in Carmel
Carmel's spring, spanning from March to May, is marked by significant warming. Ambient temperatures increase from highs of 49.1°F (9.5°C) and lows of 34.3°F (1.3°C) in March to highs of 71.6°F (22°C) and lows of 55.2°F (12.9°C) in May. Springtime ushers in increased rainfall, peaking at 1.89" (48mm) in May, along with extended daylight, culminating at 14.4 hours per day by the end of the season.Summer weather in Carmel
Summer arrives in Carmel with warm temperatures and plenty of sunshine. From June to August, average high temperatures oscillate from 79.9°F (26.6°C) to 81.5°F (27.5°C), with low temperatures ranging from 63.5°F (17.5°C) to 65.5°F (18.6°C). Daylight hours peak at 15 hours in June, while the average UV index attains its annual maximum of 6 from June to August, signifying a high amount of solar radiation.Autumn weather in Carmel
Autumn in Carmel, extending from September to November, experiences decreasing temperatures and daylight hours. September greets residents with an average high of 75.4°F (24.1°C) that dips to 48.9°F (9.4°C) by November, whereas low temperatures shrink from 57.7°F (14.3°C) to 35.6°F (2°C). Daylight hours reduce from 12.4 hours per day at the onset of Autumn to 10 hours by the end of November.Winter weather in Carmel
The winter season, from December to February, is the coldest season in Carmel, with high temperatures oscillating from 32.2°F (0.1°C) to 36.9°F (2.7°C). Low temperatures, meanwhile, hit the yearly minimum, dropping from 27.5°F (-2.5°C) to 24.4°F (-4.2°C). Snowfall accompanies these low temperatures with January registering the highest snowfall at 1.22" (31mm). Despite the cold, Carmel receives between 9.4 hours and 10.7 hours of daylight during these months.Weather in January
The start of the year in Carmel, Indiana, brings quite freezing temperatures with typical winter characteristics. January sees the lowest values of sunlight exposure with daylight hours barely reaching 9.7, and sunshine hours only around 3.9. Weather in January »Weather in February
February's weather displays some improvements compared to January; however, the winter season remains prevalent. The month shows an increase in daylight hours to 10.7, along with a minor jump in temperatures. Snowfall reduces to 1.02" (26mm) with snow observed on roughly seven days, signaling the receding grip of winter. Weather in February »Weather in March
The arrival of March brings a significant change in Carmel's weather pattern. The shift from winter to spring results in substantial temperature changes, leading to an increase in rainfall to 1.14" (29mm) as the snow gives way to rain. Weather in March »Weather in April
April in Carmel signifies the firm establishment of spring. Notable changes include increased rainfall, longer days, and mild temperatures. April also signals a decrease in snowfall, reaching as low as 0.08" (2mm), with snow observed on fewer than a day. Weather in April »Weather in May
The weather in May displays advancements towards summer, characterized by longer days and rising temperatures. At this time, temperatures continue to climb, contributing to an increase in the relative humidity to 78%, causing a warm, almost tropical atmosphere. Weather in May »Weather in June
June brings about characteristic summer conditions in Carmel with its long, sunny days and warm temperatures. It records the highest amount of sunshine hours amongst all months, settling at 10.1 hours, enhancing outdoor activity. June signifies the climactic peak of the annual precipitation pattern as rainfall hits the highest point of the year at 1.89" (48mm). Weather in June »Weather in July
The weather in July maintains true summer conditions in Carmel with temperatures soaring to their highest. July is the warmest month, marking the peak of summer, with temperatures climbing between 65.5°F (18.6°C) and 81.5°F (27.5°C). Weather in July »Weather in August
In August, the sweltering heat of Carmel's summer continues but with a slight decrease in the temperatures from July. Also, the duration of sunshine and daylight experiences a subtle reduction, hinting towards the approaching end of summer. Weather in August »Weather in September
September in Carmel introduces the mild fall season, with decreasing temperatures and shorter days. The month records a significant dip in temperatures, especially when compared to the peak summer of July, resonating a pleasant drop in heat. Weather in September »Weather in October
As Carmel enters October, noticeable signs of the impending winter start to manifest, revealing a significant drop in temperatures. October brings a substantial cooling trend, characterized by chilly mornings, shorter days, and changing foliage. Weather in October »Weather in November
November marks the onset of Carmel's winter season, with temperatures continuing to drop and days becoming significantly shorter. The month is characterized by falling leaves, a chilly atmosphere, and the reappearance of snow, albeit less than half an inch. Weather in November »Weather in December
Weather in December in Carmel, Indiana, is synonymous with the peak of winter, defined by low temperatures, short days, and high snowfall. December sees the return of snow with full force to the city, recording a snowfall of 1.38" (35mm), which is the highest for the year. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Carmel, IN
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.2°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Carmel, IN
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"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:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Carmel, IN
- Average wind speed in January:
10.1mph - Average wind speed in February:
10mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Carmel, IN
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Carmel, IN
- Average rainfall in January:
0.91" - Average rainfall in February:
0.79" - Average rainfall in March:
1.14" - Average rainfall in April:
1.65" - Average rainfall in May:
1.85" - Average rainfall in June:
1.89"
- Average rainfall in July:
1.38" - Average rainfall in August:
1.18" - Average rainfall in September:
1.02" - Average rainfall in October:
0.91" - Average rainfall in November:
0.83" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days
Carmel, IN
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
13.7 days - Average rainfall days in August:
12.2 days - Average rainfall days in September:
11 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
8 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Carmel, IN
The month with the highest snowfall is December (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Carmel, IN
- Average snowfall days in January:
8 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
3.6 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0.2 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:
0.3 days - Average snowfall days in November:
2.2 days - Average snowfall days in December:
5.9 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Carmel, IN
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
4h and 54min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 30min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 24min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Carmel, IN
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
19.8 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.7 days).
Average UV index
Carmel, 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
Carmel, IN
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Carmel, 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).





