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
Grefrath reaches its lowest average temperatures in January, measuring 4.8°C (40.6°F) at the peak and 1°C (33.8°F) at the lowest.Humidity
In January, the average relative humidity in Grefrath is 86%.Rainfall
In Grefrath, during January, the rain falls for 13.8 days and regularly aggregates up to 34mm (1.34") of precipitation. In Grefrath, during the entire year, the rain falls for 175.6 days and collects up to 456mm (17.95") of precipitation.Snowfall
Months with snowfall in Grefrath are January through March, November and December. The month with the most snowfall in Grefrath is January, when snow falls for 4.2 days and typically aggregates up to 38mm (1.5") of snow.Daylight
In Grefrath, the average length of the day in January is 8h and 28min.On the first day of January, sunrise is at 08:39 and sunset at 16:36. On the last day of the month, sunrise is at 08:14 and sunset at 17:21 CET.
Sunshine
In Grefrath, Germany, the average sunshine in January is 4h.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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 in January translates into this advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What time of the year is the coldest in Grefrath?
How cold is it in Grefrath in January?
What is the average humidity in January in Grefrath?
How much does it rain in Grefrath in January?
When does it snow the most in Grefrath?
How many days does it snow in January in Grefrath?
What is the average length of the day in January in Grefrath?
When are sunrise and sunset in January in Grefrath?
How long on average sun shines in January in Grefrath?
What is the month with the lowest UV index in Grefrath?
What is the UV index reading in January in Grefrath?
Average temperature in January
Grefrath, Germany
- Average high temperature in January: 4.8°C
The warmest months (with the highest average high temperature) are July and August (23.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in January: 1°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure in January
Grefrath, Germany
- Average pressure in January: 1016.1mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed in January
Grefrath, Germany
- Average wind speed in January: 16.2km/h
The windiest month (with the highest average wind speed) is December (17km/h).
The calmest months (with the lowest average wind speed) are July and August (11.2km/h).
Average humidity in January
Grefrath, Germany
- Average humidity in January: 86%
The month with the highest relative humidity is December (87%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in January
Grefrath, Germany
- Average rainfall in January: 34mm
The wettest months (with the highest rainfall) are June, July and December (46mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in January
Grefrath, Germany
- Average rainfall days in January: 13.8 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is April (12.2 days).
Average snowfall in January
Grefrath, Germany
- Average snowfall in January: 38mm
The month with the highest snowfall is January (38mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Grefrath, Germany
- Average snowfall days in January: 4.2 days
The month with the highest number of snowfall days is February (4.4 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
Grefrath, Germany
- Average daylight in January: 8h and 3min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in January: 4h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in January
Grefrath, Germany
- Average sunshine days in January: 12.4 days
The month with the most sunshine days is October (15.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in January
Grefrath, Germany
- 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
Grefrath, Germany
- Average cloud cover in January: 60
The month with the most cloud cover is December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in January
Grefrath, Germany
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Grefrath, Germany
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