Climate and monthly weather forecastKennesaw, GA
Climate and monthly weather forecast
The climate of Kennesaw
Situated in the southeastern part of the United States, the city of Kennesaw, Georgia lies in the region classified as a Humid subtropical climate according to the Köppen climate classification system. The predominant feature of this climate zone, denoted as Cfa, is the presence of no dry season alongside humid conditions.An analysis of the city’s annual weather data showcases distinct variations across different seasons. Temperature swings are common in Kennesaw with monthly average highs ranging from 49.1°F (9.5°C) in the cooler months to 90.1°F (32.3°C) during the hotter period of the year. On the contrary, the lowest temperature averages from 33.6°F (0.9°C) to 70.2°F (21.2°C). The humidity remains fairly constant throughout the year varying between 70 to 78%.
An intriguing pattern appears with regards to rainfall. The city experiences an average annual rainfall between 2.44" (62mm) to 5.47" (139mm) and the frequency of rainy days fluctuates from 10.2 to 21.8 days per month. Interestingly, July and August observe the highest amount of rainfall. On the other hand, snowfall is almost negligible with a minimal amount recorded in the colder months, between 0.04" (1mm) to 0.98" (25mm) accompanied by 0.2 to 1.6 snowy days.
The best time to visit Kennesaw
Drawing on the provided climate data, the most favorable time for a visit to Kennesaw would be from late spring to early summer. During these months, daylight hours are at their peak, averaging between 13.9 hours to 14.4 hours per day. The relative temperature highs vary from 71.8°F (22.1°C) to 87.1°F (30.6°C), providing ample opportunity to explore the outdoors during the day. Moreover, humidity levels remain at around 72%, ensuring that visitors do not face excessive mugginess.The worst time to visit Kennesaw
Travelers might want to avoid planning their trips to Kennesaw from July to August. This period sees the city at its wettest, with rainfall amounting from 5" (127mm) to 5.47" (139mm) and the number of rainy days soaring to 21.8 per month. Temperatures also reach their highest, with average highs from 89.1°F (31.7°C) to 90.1°F (32.3°C), which combined with the high humidity of 70% could be uncomfortable for those unaccustomed to such a climate.Spring weather in Kennesaw
Spring months from March to May in Kennesaw witness a gradual rise in temperature. Average highs increase from 62.2°F (16.8°C) in March, to 80.2°F (26.8°C) by May. At the same time, lower temperatures inches upward from 44.4°F (6.9°C) to 60.3°F (15.7°C). Correspondingly, the daylight hours also increase from around 12 hours to about 13.9 hours. Rainfall moderately fluctuates from 3.7" (94mm) to 4.37" (111mm) and the number of rainy days hovers from 15.8 days to 18.3 days.Summer weather in Kennesaw
Experiencing the traditional hot characteristics of a humid subtropical climate, Kennesaw sees temperatures soaring from June through August. July is particularly hot with an average high of 90.1°F (32.3°C). These high temperatures are accompanied by an increase in rainfall, with peak amounts reaching 5.47" (139mm) in August. However, the city enjoys an exceptional amount of daylight and sunshine during this period, ranging from 14.4 hours to 14.2 hours and 10.4 hours respectively.Autumn weather in Kennesaw
The autumn season from September to November sees a gradual decrease in temperatures from the summer highs, with a reduction from 83.7°F (28.7°C) to 60.4°F (15.8°C) on average. Correspondingly, the cooler nights parallel this trend, dropping from 64.9°F (18.3°C) to 42.8°F (6°C). Rainfall reduces from the summer peaks to a more comfortable range of 2.99" (76mm) to 3.27" (83mm).Winter weather in Kennesaw
Winter in Kennesaw commences in December and continues through February. It witnesses the city’s lowest temperatures with averages dipping to 53.4°F (11.9°C) in the day and as low as 33.6°F (0.9°C) at night. It is also the driest period of the year. Rainfall reaches its annual lowest in December at 3.27" (83mm) and encounters the least number of rainy days. The occurrence of snow is quite rare, yet it records a slight 0.75" (19mm) in December along with 1.6 snowy days.Weather in January
The year in Kennesaw, Georgia initiates with the chill of the winter season, which contributes to the January weather being the coldest of the year. The skies tend to become a canvas characterized by dense cloud cover, encompassing the majority of days. Weather in January »Weather in February
The transition from January to February brings about a slight escalation in temperature. Despite the subtle changes in climate conditions, February carries forward the wintery influence of January. Instances of snow falling decrease further compared to January, indicating the onset of the end of the wintery season. Weather in February »Weather in March
The shift from February to March signifies the official commencement of the spring season in Kennesaw. Temperature values continue the upward trend, now registering in a comfortable range. Concurrently, the number of daylight hours and average sunshine hours continue to rise. Weather in March »Weather in April
April proudly embraces the ever-pleasing spring weather of Kennesaw, with temperatures and daylight seeing a considerable increase compared to March. The noticeable transformation in Kennesaw's weather landscape is evidenced by the absence of snowfall. Weather in April »Weather in May
May marks a significant transformation of weather in Kennesaw, signifying the transition from spring to the early onset of summer. The ensuing weather conditions enhance the greenery and vibrancy of the city, perfect for outdoor enthusiasts. Weather in May »Weather in June
June invites the summer season in Kennesaw, exhibiting a significant rise in temperature in comparison to May. The duration of sunlight lengthens further, becoming the ideal setting for long summer activities. The city experiences the longest sunshine hours of the year, reinforcing the summer identity of June. Weather in June »Weather in July
July, the zenith of the summer season, is characterized by the highest temperatures of the year in Kennesaw. Kudos to the extended sunlight hours, July offers ample time to bask in the delightful summer sun. However, the city also receives a significant amount of rainfall, reaching up to 5" (127mm) spread across 21.8 days. Weather in July »Weather in August
As the calendar pages turn to August, Kennesaw experiences weather similar to that of July. By retaining substantially warm temperatures, August continues to uphold the summer vibe in Kennesaw. Minor fluctuations in weather conditions make the month of August relatively more comfortable than its predecessor. Weather in August »Weather in September
The transition from August to September marks the commencement of the autumn season in Kennesaw. A noticeable drop in the average temperatures compared to August characteristics defines September’s weather. Rainfall is less frequent, with September recording 2.99" (76mm). Weather in September »Weather in October
October carries forward the autumn vibe in Kennesaw with temperatures continuing on a downward trend from September. The city embraces the pleasant october weather that's characterized by cooler days and chilly nights. Notably, October witnesses a major drop in rainfall compared to September, measuring only up to 2.44" (62mm). Weather in October »Weather in November
November is a transitional month in Kennesaw, paving the path from autumn to winter. This transition between seasons brings about a straightforward reduction in temperature compared to October. More specific changes include diminished sunshine hours and daylight hours. Weather in November »Weather in December
As the last page on the calendar, December brings the winter season in its full swing to Kennesaw. A drop in temperature from November marks the month’s weather, along with a significant increase in the cloud cover. The city experiences the least amount of daily sunshine, indicative of the winter's shorter days. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Kennesaw, GA
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.1°F).
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure
Kennesaw, GA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.1"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.99"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.15"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed
Kennesaw, GA
- Average wind speed in January:
8mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.5mph - Average wind speed in April:
7.2mph - Average wind speed in May:
5.7mph - Average wind speed in June:
4.9mph
- Average wind speed in July:
4.6mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.8mph - Average wind speed in October:
6.1mph - Average wind speed in November:
6.6mph - Average wind speed in December:
7.4mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity
Kennesaw, GA
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall
Kennesaw, GA
- Average rainfall in January:
3.27" - Average rainfall in February:
3.62" - Average rainfall in March:
3.7" - Average rainfall in April:
3.66" - Average rainfall in May:
4.37" - Average rainfall in June:
3.98"
The wettest month (with the highest rainfall) is August (5.47").
The driest month (with the least rainfall) is October (2.44").
Average rainfall days
Kennesaw, GA
- Average rainfall days in January:
12.7 days - Average rainfall days in February:
14.8 days - Average rainfall days in March:
15.8 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
19.4 days
- Average rainfall days in July:
21.8 days - Average rainfall days in August:
20.2 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
10.7 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
14.7 days
The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is November (10.2 days).
Average snowfall
Kennesaw, GA
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Kennesaw, GA
- Average snowfall days in January:
1.6 days - Average snowfall days in February:
1.5 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0.2 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:
0.4 days - Average snowfall days in December:
0.8 days
The month with the highest number of snowfall days is January (1.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Kennesaw, GA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
5h and 36min - Average sunshine in February:
6h and 18min - Average sunshine in March:
6h and 42min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 42min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
9h and 12min - Average sunshine in September:
8h and 24min - Average sunshine in October:
7h and 6min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days
Kennesaw, GA
- Average sunshine days in January:
16.2 days - Average sunshine days in February:
11.6 days - Average sunshine days in March:
13 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
8.3 days
- Average sunshine days in July:
8.1 days - Average sunshine days in August:
8.6 days - Average sunshine days in September:
14.3 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
15.2 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is July (8.1 days).
Average UV index
Kennesaw, GA
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Kennesaw, GA
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility
Kennesaw, GA
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).





