January weather forecast
Roy-Boissy, France

January

Weather in January

January, like December, in Roy-Boissy, France, is a wintry winter month, with an average temperature fluctuating between 1°C (33.8°F) and 5.5°C (41.9°F).

Temperature

Temperature records mark January as the coldest month, with highs averaging 5.5°C (41.9°F) and lows at 1°C (33.8°F).

Humidity

In Roy-Boissy, the average relative humidity in January is 88%.

Rainfall

In Roy-Boissy, in January, during 15.2 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Roy-Boissy, during the entire year, the rain falls for 176.9 days and collects up to 456mm (17.95") of precipitation.

Snowfall

Months with snowfall in Roy-Boissy are January through March, November and December. January is the month with the most snowfall in Roy-Boissy, France. Snow falls for 2.3 days and accumulates 23mm (0.91") of snow.

Daylight

In January, the average length of the day is 8h and 42min.
On the first day of January, sunrise is at 08:48 and sunset at 17:02. On the last day of the month, sunrise is at 08:26 and sunset at 17:44 CET.

Sunshine

January has the least sunshine of the year, with an average of 3.5h of sunshine.

UV index

The months with the lowest UV index in Roy-Boissy are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What is the coldest month in Roy-Boissy?
The coldest time of the year is January, with temperatures averaging a high of 5.5°C (41.9°F) and a low of 1°C (33.8°F).
How cold is January in Roy-Boissy?
The high-temperature, in January, in Roy-Boissy, records 5.5°C (41.9°F), while the low-temperature is 1°C (33.8°F).
What is the average humidity in January in Roy-Boissy?
In January, the average relative humidity in Roy-Boissy, France, is 88%.
How many days does it rain in January in Roy-Boissy?
In Roy-Boissy, in January, it is raining for 15.2 days, with typically 33mm (1.3") of accumulated precipitation.
When does it snow the most in Roy-Boissy?
The month with the most snowfall is January, when snow falls for 2.3 days and typically aggregates up to 23mm (0.91") of snow.
How much does it snow in Roy-Boissy in January?
In Roy-Boissy, in January, during 2.3 snowfall days, 23mm (0.91") of snow is typically accumulated.
What is the average length of the day in January in Roy-Boissy?
In Roy-Boissy, France, the average day length in January is 8h and 42min.
When is the sunrise / sunset in January in Roy-Boissy?
In January, on the first day of the month, sunrise is at 08:48 and sunset at 17:02. On the last day of the month, in Roy-Boissy, France, sunrise is at 08:26 and sunset at 17:44 CET.
What is the month with the least sunshine in Roy-Boissy?
January has the least sunshine of the year in Roy-Boissy, with an average of 3.5h of sunshine.
How many hours of sunshine does Roy-Boissy have in January?
In Roy-Boissy, France, the average sunshine duration in January is 3.5h.
When is the lowest UV index in Roy-Boissy?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Roy-Boissy.
What is the UV index intensity in January in Roy-Boissy?
In Roy-Boissy, France, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January - Roy-Boissy, France
Average temperature in January
Roy-Boissy, France
  • Average high temperature in January: 5.5°C

The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (5.5°C).

  • Average low temperature in January: 1°C

The month with the highest average low temperature is August (13.1°C).
The coldest month (with the lowest average low temperature) is January (1°C).

Average pressure in January - Roy-Boissy, France
Average pressure in January
Roy-Boissy, France
  • Average pressure in January: 1017mbar

The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).

Average wind speed in January - Roy-Boissy, France
Average wind speed in January
Roy-Boissy, France
  • Average wind speed in January: 16.5km/h

The windiest month (with the highest average wind speed) is February (17.5km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).

Average humidity in January - Roy-Boissy, France
Average humidity in January
Roy-Boissy, France
  • Average humidity in January: 88%

The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (76%).

Average rainfall in January - Roy-Boissy, France
Average rainfall in January
Roy-Boissy, France
  • Average rainfall in January: 33mm

The wettest month (with the highest rainfall) is December (55mm).
The driest month (with the least rainfall) is September (21mm).

Average rainfall days in January - Roy-Boissy, France
Average rainfall days in January
Roy-Boissy, France
  • Average rainfall days in January: 15.2 days

The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is February (11.3 days).

Average snowfall in January - Roy-Boissy, France
Average snowfall in January
Roy-Boissy, France
  • Average snowfall in January: 23mm

The month with the highest snowfall is January (23mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in January - Roy-Boissy, France
Average snowfall days in January
Roy-Boissy, France
  • Average snowfall days in January: 2.3 days

The month with the highest number of snowfall days is February (2.7 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 - Roy-Boissy, France
Average daylight in January /
Average sunshine in January
Roy-Boissy, France
  • Average daylight in January: 8h and 4min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in January: 3h and 3min

The month with the most sunshine is June (Average sunshine: 8h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in January - Roy-Boissy, France
Average sunshine days in January
Roy-Boissy, France
  • Average sunshine days in January: 12.3 days

The month with the most sunshine days is March (15.7 days).
The month with the least sunshine days is July (9.3 days).

Average UV index in January - Roy-Boissy, France
Average UV index in January
Roy-Boissy, France
  • 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, November and December (UV index 2).

Average cloud cover in January - Roy-Boissy, France
Average cloud cover in January
Roy-Boissy, France
  • Average cloud cover in January: 64

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 43).

Average visibility in January - Roy-Boissy, France
Average visibility in January
Roy-Boissy, France
  • Average visibility in January: 8km

The months with the highest visibility are February, March, April, June, July, August, September, October and December (9km).
The months with the lowest visibility are January, May and November (8km).

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