Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
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).Humidity
The average relative humidity in January is 73%.Rainfall
In January, the rain falls for 12.3 days. Throughout January, 2.91" (74mm) of precipitation is accumulated. Throughout the year, there are 181.2 rainfall days, and 41.06" (1043mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. The month with the most snowfall in Riverdale is January, when snow falls for 0.8 days and typically aggregates up to 0.47" (12mm) of snow.Daylight
The average length of the day in January is 10h and 13min.On the first day of January, sunrise is at 7:41 am and sunset at 5:40 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:07 pm EST.
Sunshine
In January, the average sunshine is 5.8h.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 3 in January interprets into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
What is the average January temperature?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Riverdale have in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Riverdale, GA
- Average high temperature in January: 51.3°F
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).
- Average low temperature in January: 35.6°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 (35.6°F).
Average pressure in January
Riverdale, GA
- Average pressure in January: 30.16"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 in January
Riverdale, GA
- Average wind speed in January: 8mph
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 in January
Riverdale, GA
- Average humidity in January: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Riverdale, GA
- Average rainfall in January: 2.91"
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 in January
Riverdale, GA
- Average rainfall days in January: 12.3 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 in January
Riverdale, GA
- Average snowfall in January: 0.47"
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 in January
Riverdale, GA
- Average snowfall days in January: 0.8 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 in January /
Average sunshine in January
Riverdale, GA
- Average daylight in January: 10h and 1min
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
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 in January
Riverdale, GA
- Average sunshine days in January: 17.2 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 in January
Riverdale, GA
- Average UV index in January: 3
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 in January
Riverdale, GA
- Average cloud cover in January: 42
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 in January
Riverdale, GA
- Average visibility in January: 6mi
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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