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
Manchester experiences an average high-temperature of a still chilly 45°F (7.2°C) with the onset of January, subtly varied from December's 43.2°F (6.2°C). Manchester, during January nights, witnesses an average temperature marginally cooler than its daytime highs, at a cold 36.1°F (2.3°C).Humidity
In January, the average relative humidity is 86%.Rainfall
The months with the most rainfall are January and December, with an average 2.05" (52mm) of precipitation.Snowfall
Months with snowfall in Manchester are January through March, November and December. In Manchester, in January, snow falls for 1.7 days, with typically accumulated 0.63" (16mm) of snow. In Manchester, during the entire year, snow falls for 7 days and aggregates up to 2.36" (60mm) of snow.Ocean temperature
In Manchester, the average seawater temperature in January is 45.5°F (7.5°C).Note: Diving into 45.5°F (7.5°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.
Daylight
In January, the average length of the day is 8h and 58min.On the first day of January, sunrise is at 7:58 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:09 pm PST.
Sunshine
The average sunshine in January is 4.2h.UV index
The months with the lowest UV index in Manchester, Washington, are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during January translates into these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the average January temperature in Manchester?
What is the average humidity in January in Manchester?
What is the rainiest month in Manchester?
How many days does it rain in January in Manchester?
How much does it snow in Manchester in January?
What is the water temperature in January in Manchester?
What is the average length of the day in January in Manchester?
When is the sunrise / sunset in January in Manchester?
How long on average sun shines in January in Manchester?
What are the months with the lowest UV index in Manchester?
How high is the UV index in January in Manchester?
Average temperature in January
Manchester, WA
- Average high temperature in January: 45°F
The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).
- Average low temperature in January: 36.1°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).
Average pressure in January
Manchester, WA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in January
Manchester, WA
- Average wind speed in January: 5.1mph
The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in January
Manchester, WA
- Average humidity in January: 86%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).
Average rainfall in January
Manchester, WA
- Average rainfall in January: 2.05"
The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in January
Manchester, WA
- Average rainfall days in January: 13.4 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).
Average snowfall in January
Manchester, WA
- Average snowfall in January: 0.63"
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Manchester, WA
- Average snowfall days in January: 1.7 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
Manchester, WA
- Average sea temperature in January: 45.6°F
The best month for swimming (with the highest average sea temperature) is August (53.2°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).
Average daylight in January /
Average sunshine in January
Manchester, WA
- Average daylight in January: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in January
Manchester, WA
- Average sunshine days in January: 14.9 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in January
Manchester, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Manchester, WA
- Average cloud cover in January: 57
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in January
Manchester, WA
- Average visibility in January: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).
Manchester, Washington, USA
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