January weather forecastSaint Petersburg, FL
January
Weather in January
The year in Saint Petersburg, Florida, commences with mild conditions prevailing, setting the tone for a generally acceptable climate. Coming off the cooler conditions of December, January brings a modest change, reflected in the very slightest increase in temperature. Additionally, the span of daylight and hours of actual sunshine see a subtle climb, indicative of the advancing season. One characteristic unique to January is a persistently favorable pressure level of 30.13in, the highest for the entire year. Despite these amicable conditions, residents should be prepared for bouts of rainfall, tallying 0.83in on average.Temperature
Saint Petersburg's coldest weather arrives in January, when temperatures average a high of 67.6°F (19.8°C) and a low of 55.2°F (12.9°C).Humidity
In January, the average relative humidity is 73%.Rainfall
In Saint Petersburg, in January, it is raining for 7.8 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, there are 172.1 rainfall days, and 27.2" (691mm) of precipitation is accumulated.Ocean temperature
The month with the coldest seawater is January, with an average ocean temperature of 64°F (17.8°C).Note: For most people, swimming in water at 64°F (17.8°C) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
In January, the average length of the day is 10h and 37min.On the first day of the month, sunrise is at 7:21 am and sunset at 5:46 pm. On the last day of January, sunrise is at 7:17 am and sunset at 6:10 pm EST.
Sunshine
In January, the average sunshine is 7.3h.UV index
January is the month with the lowest UV index, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 4 in January translates into this advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Saint Petersburg, FL
- Average high temperature in January: 67.6°F
The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (67.6°F).
- Average low temperature in January: 55.2°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (55.2°F).
Average pressure in January
Saint Petersburg, FL
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in January
Saint Petersburg, FL
- Average wind speed in January: 8.9mph
The windiest months (with the highest average wind speed) are January, March, October and November (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in January
Saint Petersburg, FL
- Average humidity in January: 73%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is May (71%).
Average rainfall in January
Saint Petersburg, FL
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is July (5.24").
The driest months (with the least rainfall) are February and November (0.75").
Average rainfall days in January
Saint Petersburg, FL
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is July (26.2 days).
The month with the least rainy days is November (7 days).
Average sea temperature in January
Saint Petersburg, FL
- Average sea temperature in January: 64°F
The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64°F).
Average daylight in January /
Average sunshine in January
Saint Petersburg, FL
- Average daylight in January: 10h and 36min
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 18min
The month with the most sunshine is May (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in January
Saint Petersburg, FL
- Average sunshine days in January: 22.1 days
The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is July (3.1 days).
Average UV index in January
Saint Petersburg, 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
Saint Petersburg, FL
- Average cloud cover in January: 29
The month with the most cloud cover is December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 21).
Average visibility in January
Saint Petersburg, 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).
