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 sea temperature 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
Sullivan's January weather reaches an average high of 29.7°F (-1.3°C) and an average low of 18.5°F (-7.5°C), making it the coldest month.Humidity
In January, the average relative humidity is 81%.Rainfall
In Sullivan, during January, the rain falls for 8.1 days and regularly aggregates up to 3.19" (81mm) of precipitation. Throughout the year, there are 142.1 rainfall days, and 32.28" (820mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Sullivan, in January, during 11.8 snowfall days, 5.31" (135mm) of snow is typically accumulated. In Sullivan, during the entire year, snow falls for 48.1 days and aggregates up to 23.82" (605mm) of snow.Ocean temperature
In Sullivan, the average seawater temperature in January is 41.2°F (5.1°C).Note: If planning to swim in 41.2°F (5.1°C) under 50°F (10°C), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 55.4°F (13°C) is not much warmer.
Daylight
In Sullivan, the average length of the day in January is 9h and 17min.On the first day of the month, sunrise is at 7:09 am and sunset at 4:03 pm. On the last day of January, sunrise is at 6:52 am and sunset at 4:39 pm EST.
Sunshine
In Sullivan, the average sunshine in January is 4.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 2 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Sullivan?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
What is the ocean temperature in January?
How many hours of daylight does Sullivan have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Sullivan have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Sullivan, ME
- Average high temperature in January: 29.7°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in January: 18.5°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in January
Sullivan, ME
- Average pressure in January: 29.95"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Sullivan, ME
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in January
Sullivan, ME
- Average humidity in January: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in January
Sullivan, ME
- Average rainfall in January: 3.19"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in January
Sullivan, ME
- Average rainfall days in January: 8.1 days
The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in January
Sullivan, ME
- Average snowfall in January: 5.31"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Sullivan, ME
- Average snowfall days in January: 11.8 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in January
Sullivan, ME
- Average sea temperature in January: 41.2°F
The best month for swimming (with the highest average sea temperature) is August (56.8°F).
The coldest month (with the lowest average sea temperature) is March (38°F).
Average daylight in January /
Average sunshine in January
Sullivan, ME
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in January
Sullivan, ME
- Average sunshine days in January: 14.4 days
The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in January
Sullivan, ME
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Sullivan, ME
- Average cloud cover in January: 52
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in January
Sullivan, ME
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Sullivan, Maine, USA
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