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Contents
- The climate of Fort Mill
- The best time to visit Fort Mill
- The worst time to visit Fort Mill
- Spring weather in Fort Mill
- Summer weather in Fort Mill
- Autumn weather in Fort Mill
- Winter weather in Fort Mill
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Fort Mill
Fort Mill, South Carolina, resides within the Köppen climate classification Cfa, indicative of a humid subtropical climate with no dry season. The geographical position of this location heavily influences the characteristics of its climate, with substantial contrasts observed throughout the year.
Fort Mill experiences considerable fluctuations in temperature during the year. The highest average temperatures are observed in July, reaching 91°F (32.8°C), while the lowest averages occur in January, hitting a cool 34.3°F (1.3°C). This broad temperature range indicates a location subject to marked seasonality in temperature trends.
Consistency is a hallmark of the humidity level in Fort Mill, hovering steadily between 69% and 75% throughout the year. Fort Mill's climate also accommodates an intriguing interplay between sunlight and rain, with sunshine hours peaking at 10.7 in July while rainfall is most abundant during the same season, touching 3.23" (82mm).
Fort Mill experiences considerable fluctuations in temperature during the year. The highest average temperatures are observed in July, reaching 91°F (32.8°C), while the lowest averages occur in January, hitting a cool 34.3°F (1.3°C). This broad temperature range indicates a location subject to marked seasonality in temperature trends.
Consistency is a hallmark of the humidity level in Fort Mill, hovering steadily between 69% and 75% throughout the year. Fort Mill's climate also accommodates an intriguing interplay between sunlight and rain, with sunshine hours peaking at 10.7 in July while rainfall is most abundant during the same season, touching 3.23" (82mm).
The best time to visit Fort Mill
Given its humid subtropical climate, the best time to visit Fort Mill depends on personal preferences regarding temperature, sunlight, and precipitation. Warm weather enthusiasts may find the summers most appealing from June to August, with temperatures peaking at 87.4°F (30.8°C) to 91°F (32.8°C). These months also offer the highest daylight and sunshine hours, extending from 13.4 hours to 14.5 hours and 10.2 hours to 10.7 hours, respectively. The UV index of 6 to 7 suggests a high intensity of ultraviolet radiation during this period, so protection from the sun is recommended.
The worst time to visit Fort Mill
For those who prefer milder weather, the months of December, January, and February may not be ideal for a visit. During these winter months, the average low temperature drops from 39°F (3.9°C) to 34.3°F (1.3°C), making them the coldest in the year. Sunshine hours also drop to 5.3 - 5.4 hours, while the daylight is at its shortest, between 9.8 hours and 10.1 hours. These months also see the occurrence of snowfall, with 0.83" (21mm) in December and 1.14" (29mm) in January, although the actual number of snowfall days is relatively low.
Spring weather in Fort Mill
During spring, from March to May, the climatic conditions in Fort Mill transition from the cooler months to the warmth of summer. In this period, the temperature varies from 43.3°F (6.3°C) to 60.8°F (16°C), making it a pleasantly mild season. Rainfall this season spans from 2.36" (60mm) to 2.8" (71mm), offering a blend of dry and wet days.
Summer weather in Fort Mill
The summer season in Fort Mill, from June to August, is characterized by elevated temperatures, rising daylight hours, and increased rainfall. Temperatures soar from 67.6°F (19.8°C) to 70.7°F (21.5°C), with the added benefit of high sunshine hours between 10.2 hours to 10.7 hours. Rainfall measures between 2.2" (56mm) to 3.23" (82mm), with July recording the highest precipitation indices.
Autumn weather in Fort Mill
From September to November, Fort Mill witnesses autumn which is a comfortable period to enjoy moderate weather conditions. The temperatures oscillate between 53.4°F (11.9°C) and 64.2°F (17.9°C), while daylight duration declines from 12.4 hours in September to 10.3 hours in November. The rainfall shuffles from 1.81" (46mm) to 2.32" (59mm).
Winter weather in Fort Mill
The winter in Fort Mill, from December to February, manifests with cooler temperatures, decreased daylight, and the occurrence of snowfall. The average low temperature drops to 34.3°F (1.3°C) in January from 39°F (3.9°C) in December. Daylight hours recede to 9.8 hours in December from 10.1 hours in January. Snowfall is observed with intensity ranging from 0.83" (21mm) in December to 1.14" (29mm) in January. The visibility averages 6 miles across all months, indicating relatively clear weather.
Weather in January
Setting the stage for the year, January in Fort Mill, South Carolina, experiences cooler weather. Following the peak of winter, it bears witness to a gradual increase in daylight hours, from 10.1 hours at the beginning of the month. Weather in January »
Weather in February
February showcases a minor climb in temperatures compared to January. It brings a slight increase in snowfall, with 1.26" (32mm) on average making it one of the two peak months for snowfall in the year. Unlike the cooler months of winter, February signals the onset of spring. Weather in February »
Weather in March
March in Fort Mill, South Carolina, heralds the true arrival of spring, bringing an upwards shift in weather dynamics. Temperature highs increase significantly to 61.3°F (16.3°C), making it noticeably warmer. The arrival of spring is underscored by an uptick in sunlight hours to 7 per day and UV indexes increasing to 4. Weather in March »
Weather in April
The trend of warming continues into April, signaling onward march of the seasons. This is one of the wetter months of the year with rain being more prevalent. The pleasant temperatures invite outdoor activities, heightened by the ample daylight stretching out to 13.1 hours. Weather in April »
Weather in May
May in Fort Mill coincides with the onset of late spring, leading to significant changes in the weather profile. It hosts the highest pressure readings for the year at 30.03" (763mm). Elevated temperature highs of around 79.7°F (26.5°C) make their grand entrance, hinting at the summer heat yet to come. Weather in May »
Weather in June
Marking Fort Mill’s leap into summer, June introduces some of the year’s warmest daytime temperatures. Temperatures surely crest in June with an average high of 87.4°F (30.8°C), making it the third warmest month of the year. Weather in June »
Weather in July
The heat of summer in Fort Mill, South Carolina, peaks during July. The average high temperature climbs to its zenith at 91°F (32.8°C) while the average low temperature also maxes out at 70.7°F (21.5°C). With respect to rainfall, there are approximately 17.8 days with substantial rainfall, slightly dampening the outdoor enthusiasm. Weather in July »
Weather in August
Although not as torrid as July, August still brings along its share of summer heat. The high temperatures hover around 88.7°F (31.5°C), contrasted by cooler nighttime temperatures around 69.4°F (20.8°C). Notably, it is the wettest month of the year, with a peak rainfall of 3.23" (82mm). Weather in August »
Weather in September
September brings perceptible weather mititgation to Fort Mill, serving as a gateway to fall conditions. Though the sun still shines admirably for approximately 8.6 hours a day, it makes way for slightly cooler temperatures and rainfall. Weather in September »
Weather in October
As fall establishes its full grip on the city in October, the weather in Fort Mill, South Carolina, undergoes a dramatic shift. The average high temperature drops to a comfortable 71.8°F (22.1°C), paving the return of gentler days. Weather in October »
Weather in November
November witnesses a further dip in temperature as Fort Mill marches towards winter. The cool air becomes more noticeable with high temperatures showing a radical drop to 59.9°F (15.5°C). With the daylight hours dwindling further down to 10.3 hours, winter undoubtedly draws nearer. Weather in November »
Weather in December
The year in Fort Mill, South Carolina, concludes with December, maintaining a grip on the chill of winter. With average high temperatures dropping down to 53.1°F (11.7°C), it is the coldest month of the year. The advent of winter is marked by the shortest days of the year, with sunlight available for a mere 9.8 hours. Weather in December »
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
With average high and low temperatures of 49.6°F (9.8°C) and 34.3°F (1.3°C) respectively, January is Fort Mill's coldest month.
How many days does it rain?
Throughout the year, there are 146.1 rainfall days, and 28.94" (735mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March and December.
How many days does it snow?
In Fort Mill, during the entire year, snow falls for 3.1 days and aggregates up to 3.58" (91mm) of snow.
What are the months with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 2.
When does it snow the most in Fort Mill?
The month with the most snowfall is February, when snow falls for 1.4 days and typically aggregates up to 1.26" (32mm) of snow.
When is Daylight Saving Time (DST) in Fort Mill?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow?
In Fort Mill, snow does not fall in April through November.
When are the longest days?
The month with the longest days is June, with an average of 14h and 30min of daylight.
What time of the year is the hottest?
In Fort Mill, the peak average temperatures are observed in July, with a high of 91°F (32.8°C) and a low of 70.7°F (21.5°C).
What is the least humid month?
With an average relative humidity of 69%, July is the least humid month.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.7h of sunshine.
When is the highest UV index in Fort Mill?
The month with the highest UV index is July, with an average maximum UV index of 7.
What is the wettest month?
August is the month with the most rainfall. Rain falls for 16 days and accumulates 3.23" (82mm) of precipitation.
What is the driest month?
The months with the least rainfall are September and October Rain falls for 11.5 days and accumulates 1.81" (46mm) of rain.
What is the most humid month?
December is the most humid month, with an average relative humidity of 75%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.3h of sunshine.
Average temperature
Fort Mill, SC
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (49.6°F).
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure
Fort Mill, SC
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
Fort Mill, SC
- Average wind speed in January:
7.3mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.7mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.4mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.4mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.5mph - Average wind speed in December:
6.8mph
The windiest months (with the highest average wind speed) are February and April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Fort Mill, SC
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall
Fort Mill, SC
- Average rainfall in January:
2.36" - Average rainfall in February:
2.17" - Average rainfall in March:
2.36" - Average rainfall in April:
2.8" - Average rainfall in May:
2.56" - Average rainfall in June:
2.2"
- Average rainfall in July:
2.4" - Average rainfall in August:
3.23" - Average rainfall in September:
1.81" - Average rainfall in October:
1.81" - Average rainfall in November:
2.32" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is August (3.23").
The driest months (with the least rainfall) are September and October (1.81").
Average rainfall days
Fort Mill, SC
- Average rainfall days in January:
9.6 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
13.1 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
13.5 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
16 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
10 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.3 days).
Average snowfall
Fort Mill, SC
The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Fort Mill, SC
- Average snowfall days in January:
0.8 days - Average snowfall days in February:
1.4 days - Average snowfall days in March:
0.4 days - Average snowfall days in April:
0 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 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.5 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Fort Mill, SC
- Average daylight in January:
10h and 1min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 0min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 3min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days
Fort Mill, SC
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
15.2 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
22 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
19.8 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (11.8 days).
Average UV index
Fort Mill, SC
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Fort Mill, SC
The months with the most cloud cover are February and December (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility
Fort Mill, SC
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).
Fort Mill, South Carolina, USA
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