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 6.4°C (43.5°F) and an average low temperature of 1.5°C (34.7°F), is the coldest month.Humidity
In Grendon Underwood, the average relative humidity in January is 90%.Rainfall
In Grendon Underwood, during January, the rain falls for 14.4 days and regularly aggregates up to 32mm (1.26") of precipitation. In Grendon Underwood, United Kingdom, during the entire year, the rain falls for 187.4 days and collects up to 476mm (18.74") of precipitation.Snowfall
January through March and December are months with snowfall. The months with the most snowfall in Grendon Underwood are January and February, with an average 17mm (0.67") of accumulated snow.Daylight
In January, the average length of the day in Grendon Underwood is 8h and 23min.On the first day of the month, sunrise is at 8:11 am and sunset at 4:03 pm. On the last day of January, sunrise is at 7:45 am and sunset at 4:49 pm GMT.
Sunshine
The average sunshine in January is 4.3h.UV index
The months with the lowest UV index in Grendon Underwood 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 rays for the ordinary person.Note: The maximum UV index of 2 during January leads to these instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Stay sun-safe with clothing that is both closely woven and worn loosely. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Grendon Underwood?
How cold does it get in Grendon Underwood in January?
What is the average humidity in January in Grendon Underwood?
How much does it rain in Grendon Underwood in January?
What is the snowiest month in Grendon Underwood?
How much does it snow in Grendon Underwood in January?
How many hours of daylight does Grendon Underwood have in January?
What time are sunrise and sunset in January in Grendon Underwood?
How long on average sun shines in January in Grendon Underwood?
What is the month with the lowest UV index in Grendon Underwood?
How high is the UV index in January in Grendon Underwood?
Average temperature in January
Grendon Underwood, United Kingdom
- Average high temperature in January: 6.4°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in January: 1.5°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is January (1.5°C).
Average pressure in January
Grendon Underwood, United Kingdom
- Average pressure in January: 1014.2mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).
Average wind speed in January
Grendon Underwood, United Kingdom
- Average wind speed in January: 17.6km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in January
Grendon Underwood, United Kingdom
- Average humidity in January: 90%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (78%).
Average rainfall in January
Grendon Underwood, United Kingdom
- Average rainfall in January: 32mm
The wettest month (with the highest rainfall) is June (62mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in January
Grendon Underwood, United Kingdom
- Average rainfall days in January: 14.4 days
The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in January
Grendon Underwood, United Kingdom
- Average snowfall in January: 17mm
The months with the highest snowfall are January and February (17mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Grendon Underwood, United Kingdom
- Average snowfall days in January: 2.3 days
The month with the highest number of snowfall days is February (3.3 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
Grendon Underwood, 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 2min
The month with the most sunshine is July (Average sunshine: 7h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in January
Grendon Underwood, United Kingdom
- Average sunshine days in January: 13.5 days
The month with the most sunshine days is March (14.6 days).
The month with the least sunshine days is August (6.7 days).
Average UV index in January
Grendon Underwood, 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
Grendon Underwood, United Kingdom
- Average cloud cover in January: 57
The month with the most cloud cover is November (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 49).
Average visibility in January
Grendon Underwood, United Kingdom
- Average visibility in January: 8km
The months with the highest visibility are February, March, April, May, June, July, August and December (9km).
The months with the lowest visibility are January, September, October and November (8km).
Grendon Underwood, United Kingdom
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