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 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, with its average high-temperature of 66°F (18.9°C) and an average low-temperature of 54.5°F (12.5°C), holds the record as the coldest month.Humidity
The average relative humidity in January is 73%.Rainfall
In Keystone, during January, the rain falls for 5.7 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, there are 120.5 rainfall days, and 9.45" (240mm) of precipitation is accumulated.Daylight
The average length of the day in January is 10h and 35min.On the first day of January in Keystone, sunrise is at 7:22 am and sunset at 5:45 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:09 pm EST.
Sunshine
In January, the average sunshine is 7.2h.UV index
With an average maximum UV index of 4, January is the month with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 4 in January suggests the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What are the temperatures in January?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Keystone have in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Keystone, FL
- Average high temperature in January: 66°F
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (66°F).
- Average low temperature in January: 54.5°F
The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (54.5°F).
Average pressure in January
Keystone, FL
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in January
Keystone, FL
- Average wind speed in January: 8.9mph
The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in January
Keystone, FL
- Average humidity in January: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is May (72%).
Average rainfall in January
Keystone, FL
- Average rainfall in January: 0.35"
The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is March (0.2").
Average rainfall days in January
Keystone, FL
- Average rainfall days in January: 5.7 days
The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is November (5.5 days).
Average daylight in January /
Average sunshine in January
Keystone, FL
- Average daylight in January: 10h and 4min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in January: 7h and 1min
The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in January
Keystone, FL
- Average sunshine days in January: 23.4 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (6.7 days).
Average UV index in January
Keystone, FL
- Average UV index in January: 4
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in January
Keystone, FL
- Average cloud cover in January: 30
The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).
Average visibility in January
Keystone, FL
- 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).
Keystone, Florida, USA
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