Climate and monthly weather forecast
McDonough, GA

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The climate of McDonough

McDonough is nestled in Georgia, USA, and is characterized by a humid subtropical climate, represented as Cfa according to the Köppen climate classification. This basically signifies that there is no dry season, granting the area ample humidity and moisture throughout the year. A consistent theme throughout the year in McDonough is the notable humidity levels, which linger close to the mid-seventies percentages with minor variations. A slight peak is detected in February where the average humidity reaches up to 77%.

The city’s temperatures see a rather broad spectrum throughout the year, where the average heights in the warmest months of July climb up to 90.5°F (32.5°C) and the average lows for winter in January drop to 35.4°F (1.9°C). Rainfall is also a significant factor, spread throughout the year with higher averages in the summer months reaching 5.24" (133mm) in August while November witnesses less precipitation with an average of 2.68" (68mm). The city experiences minor snowfall mainly in the beginning and at the year's end with December having 0.08" (2mm) of snowfall.

Interestingly, despite the elevated rainfall, McDonough also enjoys a fair share of sunshine throughout the year. In the longer days of June, up to 14.3 hours of daylight illuminates the town, while in the shorter days of December, the daylight still lasts for a respectable 10 hours. The sunniest months are June and July, both averaging 10.5 hours of sunshine per day.

The best time to visit McDonough

Reasonably, the period between May and October can be considered as the optimal time to visit McDonough. During this timeframe, the area relishes in comfortable temperatures ranging from highs of 81°F (27.2°C) to 90.5°F (32.5°C) and lows from 61.2°F (16.2°C) to 71.1°F (21.7°C). It also aligns with the lengthiest daylight hours, ranging from 13 to 14.3 hours, allowing visitors to make the most out of their days.

However, keep in mind that this period also aligns with the highest rainfall within the year, especially between June and August where rainfall ranges from 3.78" (96mm) to 5.24" (133mm). Nevertheless, the charm of McDonough's humid subtropical atmosphere combined with the extensive daylight hours renders this period as a fine time to explore its attractions vividly.

The worst time to visit McDonough

If colder temperatures and the prospect of encountering snow are not appealing, it might be advisable to avoid McDonough during January and February. During these months, the average low temperatures drop to 35.4°F (1.9°C) to 39.6°F (4.2°C), respectively. Additionally, January records the slightest rainfall with an average of 3.03" (77mm), making it slightly dryer relative to other months.

Spring weather in McDonough

Spring in McDonough is marked by moderate temperatures and bright sunshine. From March to May, temperatures typically range between an average low of 45.9°F (7.7°C) to an average high of 81°F (27.2°C). Relative humidity persistently hovers in the mid-seventies. These months see the daylight hours extend considerably, reaching up to 13 hours in May.

Summer weather in McDonough

From June through to August, summer temperatures in McDonough can reach peaks of 88.3°F (31.3°C) to 90.5°F (32.5°C), with nighttimes providing subtle relief as temperatures drop down between 64.3°F (17.9°C) and 71.1°F (21.7°C). The region experiences the maximum rainfall in these months, with August seeing the highest average of 5.24" (133mm). However, this is counterbalanced by the longest daylight periods, reaching up to 14.3 hours in June, and the most sunshine hours, peaking at 10.5 hours daily in June and July.

Autumn weather in McDonough

Autumn presents milder weather conditions in McDonough, with temperatures from September to November ranging from highs of 84.6°F (29.2°C) to 62.2°F (16.8°C) and lows from 65.3°F (18.5°C) to 44.1°F (6.7°C). As the season progresses, the daylight hours and sunshine duration gradually reduce, reaching an average of 10.4 hours and 5.9 hours in November, respectively.

Winter weather in McDonough

Winter in McDonough does not meet the stereotypical snowy landscapes often associated with the season. Temperatures range from highs of 55°F (12.8°C) to 51.6°F (10.9°C) and lows from 40.3°F (4.6°C) to 35.4°F (1.9°C) in the December to February period. Although snowfall occurs, it is minimal, totaling 0.08" (2mm) in December and gradually depleting until it ceases in March. Despite the chill, the city enjoys at least 10 hours of daylight and around 5.1 - 5.8 hours of sunshine in this season.

Weather in January

January heralds the onset of winter weather in McDonough, Georgia. A reduced humidity of 73% coupled with temperatures ranging from 35.4°F (1.9°C) to 51.6°F (10.9°C) make the locale a true winter wonderland. Snowfalls, although rare, do occur with an average of 0.39" (10mm) scattered over less than a day. Weather in January »

Weather in February

February ushers in some noticeable changes in McDonough's weather, with an increase in both temperature and rainfall from the previous month. Contending with the highest amount of humidity so far, at 76%, you'll find the outdoors a bit more substantial than January. Weather in February »

Weather in March

March ushers in the delightful onset of spring in McDonough, revealing an impressive surge in temperatures, now between 45.9°F (7.7°C) and 64.2°F (17.9°C). Showers in McDonough get slightly more persistent with rainfall at 2.64" (67mm) distributed over 15.3 days. Weather in March »

Weather in April

April finds McDonough in the full swing of spring, showcasing warmer temperatures, abundant rainfall, and longer sunshine hours. The city’s weather maintains temperatures from 53.4°F (11.9°C) to 73°F (22.8°C), indicative of a typical spring season. Weather in April »

Weather in May

In May, McDonough residents feel the unmistakable approach of summer. Temperatures make a golden leap, ranging from 61.2°F (16.2°C) to 81°F (27.2°C), paving the way for some delightful summer sundresses and shorts. The city witnesses rainfall of 3.31" (84mm), mainly spread over 16.6 days, making it a slightly drizzly month. Weather in May »

Weather in June

June marks the onset of summer in McDonough, Georgia. Temperatures during this month lie between 68°F (20°C) and an impressive 88.3°F (31.3°C), offering lovely warm days and balmy nights. With rainfall situated at 3.78" (96mm) and spread over 19.6 days, this period calls for a breezy clothing preference. Weather in June »

Weather in July

July is undoubtedly the hottest month in McDonough, with temperatures soaring from 71.1°F (21.7°C) to 90.5°F (32.5°C). The rainfall during this month peaks at 4.41" (112mm) spread throughout 22.3 days. Embrace the heat and humidity by staying hydrated and limiting sun exposure, especially when the UV Index is at a high of 6. Weather in July »

Weather in August

August brings McDonough's weather a slight dip from July as the apex of summer recedes. Temperatures hover between 70.2°F (21.2°C) to 88.9°F (31.6°C), offering a welcome respite from the previous month's highs. A peak in the rainfall figures captivates attention, with a noticeable 5.24" (133mm) precipitation spread over 21.4 days. Weather in August »

Weather in September

McDonough welcomes September with a perceptible shift in the weather, transitioning from sweltering summer temperatures to the beginnings of a blooming fall. Temperatures cool considerably, oscillating between 65.3°F (18.5°C) and 84.6°F (29.2°C). Weather in September »

Weather in October

October in McDonough ushers in the full onset of fall, characterized by dropping temperatures, vivid foliage, and occasional rainfall. In a refreshing change from the previous month, October witnesses temperatures between 54.1°F (12.3°C) and 73.8°F (23.2°C). Weather in October »

Weather in November

November offers a significant drop from October temperatures, with colder weather conditions fluctuating from 44.1°F (6.7°C) to 62.2°F (16.8°C). Despite a slight increase in the amount of rainfall with 2.68" (68mm) spread over 9.5 days, November is characterized by its crisp, cool air. Weather in November »

Weather in December

December in McDonough is the epitome of the year-end festive feel, complete with chilly temperatures, increased humidity, and longer nights. December brings temperatures ranging from 40.3°F (4.6°C) to 55°F (12.8°C), perfect for cozy sweaters and simmering hot cocoa. Weather in December »
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in McDonough?

With average temperatures fluctuating between a high of 51.6°F (10.9°C) and a low of 35.4°F (1.9°C), January stands out as the coldest month in McDonough.

How many days does it rain in McDonough?

Throughout the year, there are 179.5 rainfall days, and 40.08" (1018mm) of precipitation is accumulated.

When does it snow in McDonough?

January through March, November and December are months with snowfall in McDonough, Georgia.

When does it snow the most in McDonough?

The month with the most snowfall in McDonough, Georgia, is January, when snow falls for 0.8 days and typically aggregates up to 0.39" (10mm) of snow.

How many days does it snow in McDonough?

In McDonough, during the entire year, snow falls for 2.7 days and aggregates up to 1.02" (26mm) of snow.

What is the month with the lowest UV index in McDonough?

The months with the lowest UV index in McDonough, Georgia, are January, February, November and December, with an average maximum UV index of 3.

When is Daylight Saving Time (DST) in McDonough?

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 McDonough?

April through October are months without snowfall in McDonough.

When are the longest days in McDonough?

With an average of 14h and 18min of daylight, June has the longest days of the year in McDonough.

What are the months with the most sunshine in McDonough?

June and July, with an average of 10.5h of sunshine, are months with the most sunshine in McDonough, Georgia.

What is the month with the highest UV index in McDonough?

The month with the highest UV index is June, with an average maximum UV index of 7.

What month is the hottest in McDonough?

July is the month that records the highest temperatures in McDonough, with averages ranging from a high of 90.5°F (32.5°C) to a low of 71.1°F (21.7°C).

What is the rainiest month in McDonough?

The month with the most rainfall is August, when the rain falls for 21.4 days and typically aggregates up to 5.24" (133mm) of precipitation.

What is the least humid month in McDonough?

October and November, with an average relative humidity of 72%, are the least humid months.

What is the driest month in McDonough?

The month with the least rainfall in McDonough, Georgia, is October, when the rain falls for 9.6 days and typically collects 2.17" (55mm) of precipitation.

What is the most humid month in McDonough?

The most humid month in McDonough, Georgia, is December, with an average relative humidity of 77%.

What is the month with the shortest days in McDonough?

With an average of 10h and 0min of daylight, December has the shortest days of the year in McDonough.

What is the month with the least sunshine in McDonough?

With an average of 5.1h of sunshine, December has the least sunshine of the year in McDonough.

Average temperature
McDonough, GA

Average temperature - McDonough, GA

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (51.6°F).

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).

Average pressure
McDonough, GA

Average pressure - McDonough, GA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed
McDonough, GA

Average wind speed - McDonough, GA

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

Average humidity
McDonough, GA

Average humidity - McDonough, GA

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are October and November (72%).

Average rainfall
McDonough, GA

Average rainfall - McDonough, GA

The wettest month (with the highest rainfall) is August (5.24").
The driest month (with the least rainfall) is October (2.17").

Average rainfall days
McDonough, GA

Average rainfall days - McDonough, GA

The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (9.5 days).

Average snowfall
McDonough, GA

Average snowfall - McDonough, GA

The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
McDonough, GA

Average snowfall days - McDonough, GA

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
McDonough, GA

Average daylight / Average sunshine - McDonough, GA

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days
McDonough, GA

Average sunshine days - McDonough, GA

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (7.1 days).

Average UV index
McDonough, GA

Average UV index - McDonough, GA

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover
McDonough, GA

Average cloud cover - McDonough, GA

The months with the most cloud cover are February and December (Cloud cover 45).
The months with the least cloud cover are June and October (Cloud cover 31).

Average visibility
McDonough, GA

Average visibility - McDonough, 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).

McDonough, Georgia, USA

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