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, known for its average high temperature of 6.6°C (43.9°F) and an average low temperature of 1.8°C (35.2°F), is the coldest month.Humidity
In Slough, the average relative humidity in January is 88%.Rainfall
In Slough, in January, it is raining for 11.5 days, with typically 18mm (0.71") of accumulated precipitation. Throughout the year, in Slough, there are 149.7 rainfall days, and 270mm (10.63") of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. January is the month with the most snowfall. Snow falls for 1.6 days and accumulates 12mm (0.47") of snow.Daylight
In Slough, the average length of the day in January is 8h and 27min.On the first day of the month, sunrise is at 8:07 am and sunset at 4:03 pm. On the last day of January, in Slough, sunrise is at 7:42 am and sunset at 4:48 pm GMT.
Sunshine
In January, the average sunshine in Slough is 4.2h.UV index
The months with the lowest UV index 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 exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What part of the year is the coldest in Slough?
How cold is it in Slough in January?
What is the average humidity in January in Slough?
How much does it rain in Slough in January?
What is the snowiest month in Slough?
How much does it snow in Slough in January?
What is the average length of the day in January in Slough?
When is the sunrise / sunset in January in Slough?
How long on average sun shines in January in Slough?
What are the months with the lowest UV index in Slough?
What is the UV index intensity in January in Slough?
Average temperature in January
Slough, United Kingdom
- Average high temperature in January: 6.6°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in January: 1.8°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in January
Slough, United Kingdom
- Average pressure in January: 1014.5mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in January
Slough, United Kingdom
- Average wind speed in January: 16.9km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest months (with the lowest average wind speed) are July and September (12.8km/h).
Average humidity in January
Slough, United Kingdom
- Average humidity in January: 88%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall in January
Slough, United Kingdom
- Average rainfall in January: 18mm
The wettest month (with the highest rainfall) is June (34mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in January
Slough, United Kingdom
- Average rainfall days in January: 11.5 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is September (9.9 days).
Average snowfall in January
Slough, United Kingdom
- Average snowfall in January: 12mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Slough, United Kingdom
- Average snowfall days in January: 1.6 days
The month with the highest number of snowfall days is February (2.3 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
Slough, United Kingdom
- Average daylight in January: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in January
Slough, United Kingdom
- Average sunshine days in January: 15.8 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in January
Slough, United Kingdom
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Slough, United Kingdom
- Average cloud cover in January: 57
The month with the most cloud cover is November (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 49).
Average visibility in January
Slough, United Kingdom
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Slough, United Kingdom
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