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Contents
- 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
Weather in January
January, the same as December, is a cool winter month in Riverdale, Georgia, with an average temperature ranging between max 51.3°F (10.7°C) and min 35.6°F (2°C). January is the month when Riverdale sees the lowest average temperatures, with a high of 51.3°F (10.7°C) and a low of 35.6°F (2°C). Weather in January »
Weather in February
February, the last month of the winter in Riverdale, is a moderate month, with an average temperature varying between 39.2°F (4°C) and 56.1°F (13.4°C). The arrival of February is marked by an average high-temperature of a moderate 56.1°F (13.4°C), bearing a close resemblance to January. Weather in February »
Weather in March
March, the first month of the spring in Riverdale, is a refreshing month, with an average temperature fluctuating between 45.1°F (7.3°C) and 63.9°F (17.7°C). With the onset of March, Riverdale's average high-temperature sees a modest rise, moving from February's mild 56.1°F (13.4°C) to an enjoyable 63.9°F (17.7°C). Weather in March »
Weather in April
April is an agreeable spring month in Riverdale, Georgia, with an average temperature varying between 53.2°F (11.8°C) and 73°F (22.8°C). April sees a rise in the average high-temperature, climbing from a refreshing 63.9°F (17.7°C) in March to an agreeable 73°F (22.8°C). Weather in April »
Weather in May
May, the last month of the spring in Riverdale, is a moderately hot month, with an average temperature ranging between min 61.2°F (16.2°C) and max 80.8°F (27.1°C). A slight uplift in the average high-temperature marks May, adjusting from April's agreeable 73°F (22.8°C) to a warm 80.8°F (27.1°C). Weather in May »
Weather in June
June, the first month of the summer in Riverdale, is a tropical month, with an average temperature varying between 88.2°F (31.2°C) and 68.2°F (20.1°C). With the transition into June, Riverdale experiences a subtle uplift in average high-temperatures, adjusting from a moderately hot 80.8°F (27.1°C) in May to a hot 88.2°F (31.2°C). Weather in June »
Weather in July
July, the same as June, in Riverdale, Georgia, is another hot summer month, with an average temperature ranging between max 90.3°F (32.4°C) and min 71.1°F (21.7°C). In Riverdale, the month of July registers the highest temperatures, averaging 90.3°F (32.4°C) at the peak and 71.1°F (21.7°C) at the lowest. For most parts of July, the heat index is appraised at a scorching 107.6°F (42°C). Weather in July »
Weather in August
August, the last month of the summer in Riverdale, is also a hot month, with an average temperature ranging between max 89.1°F (31.7°C) and min 70.3°F (21.3°C). August's average high-temperature stands at a still tropical 89.1°F (31.7°C), showing little deviation from July's 90.3°F (32.4°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Riverdale, Georgia, with an average temperature ranging between max 83.8°F (28.8°C) and min 65.7°F (18.7°C). The initiation of September sees an average high-temperature of a warm 83.8°F (28.8°C), showing minor variations from the previous month. Weather in September »
Weather in October
October, like September, in Riverdale, Georgia, is another warm autumn month, with an average temperature fluctuating between 54.1°F (12.3°C) and 73.6°F (23.1°C). In October, the meteorological conditions alter, with the average high-temperature shifting from 83.8°F (28.8°C) in September to a still warm 73.6°F (23.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another comfortable month in Riverdale, Georgia, with an average temperature varying between 43.9°F (6.6°C) and 61.7°F (16.5°C). November brings a drop in Riverdale's average high-temperature, falling from a moderately hot 73.6°F (23.1°C) in October to a comfortable 61.7°F (16.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cool month in Riverdale, Georgia, with an average temperature fluctuating between 40.1°F (4.5°C) and 55.2°F (12.9°C). The onset of December is marked by a minor decrease in temperature, transitioning from a comfortable 61.7°F (16.5°C) in November to a fresh 55.2°F (12.9°C). Weather in December »
Updated: Jun 8, 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 part of the year is the coldest?
January is the coldest month of the year, registering average temperatures as high as 51.3°F (10.7°C) and as low as 35.6°F (2°C).
How much does it rain?
In Riverdale, during the entire year, the rain falls for 181.2 days and collects up to 41.06" (1043mm) of precipitation.
When does it snow?
Months with snowfall are January through March, November and December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 0.8 days and accumulates 0.47" (12mm) of snow.
How much does it snow?
Throughout the year, there are 2.9 snowfall days, and 1.18" (30mm) of snow is accumulated.
When is the lowest UV index?
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index.
When is Daylight Saving Time (DST)?
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 Riverdale, snow does not fall in April through October.
What are the months with the highest UV index in Riverdale?
May through September, with an average maximum UV index of 6, are months with the highest UV index.
When are the longest days?
With an average of 14h and 18min of daylight, June has the longest days of the year.
What are the months with the most sunshine?
The months with the most sunshine are June and July, with an average of 10.5h of sunshine.
What are the warmest months?
July proves to be the warmest month, recording an average peak temperature of 90.3°F (32.4°C) and a minimum temperature of 71.1°F (21.7°C).
What is the rainiest month in Riverdale?
The month with the most rainfall is August, when the rain falls for 21.3 days and typically aggregates up to 5.43" (138mm) of precipitation.
What is the least humid month?
October is the least humid month, with an average relative humidity of 71%.
What is the driest month?
October is the month with the least rainfall. Rain falls for 10 days and accumulates 2.17" (55mm) of precipitation.
What is the most humid month?
December is the most humid month, with an average relative humidity of 77%.
What is the month with the shortest days?
With an average of 10h and 0min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 5h of sunshine.
Average temperature
Riverdale, GA
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (51.3°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 (35.6°F).
Average pressure
Riverdale, 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"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.15"Hg
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
Riverdale, GA
- Average wind speed in January:
8mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.1mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5mph
- Average wind speed in July:
4.7mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.8mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.7mph - Average wind speed in December:
7.5mph
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
Riverdale, GA
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Riverdale, GA
- Average rainfall in January:
2.91" - Average rainfall in February:
3.19" - Average rainfall in March:
2.83" - Average rainfall in April:
3.46" - Average rainfall in May:
3.19" - Average rainfall in June:
3.98"
- Average rainfall in July:
4.69" - Average rainfall in August:
5.43" - Average rainfall in September:
2.72" - Average rainfall in October:
2.17" - Average rainfall in November:
2.72" - Average rainfall in December:
3.78"
The wettest month (with the highest rainfall) is August (5.43").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days
Riverdale, GA
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
13.3 days - Average rainfall days in March:
15.7 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
19.3 days
- Average rainfall days in July:
22.8 days - Average rainfall days in August:
21.3 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
10 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
13 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is November (9.6 days).
Average snowfall
Riverdale, GA
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Riverdale, GA
- Average snowfall days in January:
0.8 days - Average snowfall days in February:
1.2 days - Average snowfall days in March:
0.3 days - Average snowfall days in April:
0.1 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:
0.1 days - Average snowfall days in December:
0.4 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Riverdale, GA
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- 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:
10h and 0min
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).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 4min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 5min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
9h and 2min - Average sunshine in September:
8h and 3min - Average sunshine in October:
7h and 1min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h 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 0min).
Average sunshine days
Riverdale, GA
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
13 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
14.4 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
9.1 days
- Average sunshine days in July:
7.2 days - Average sunshine days in August:
8.3 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
20.1 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (7.2 days).
Average UV index
Riverdale, GA
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover
Riverdale, GA
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are June and October (Cloud cover 31).
Average visibility
Riverdale, 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).
Riverdale, Georgia, USA
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