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
January
Weather in January
Temperature
Harpenden's January weather, marked by an average high temperature of 6.3°C (43.3°F) and an average low temperature of 1.6°C (34.9°F), is the coldest in the year.Humidity
In Harpenden, United Kingdom, the average relative humidity in January is 89%.Rainfall
In Harpenden, during January, the rain falls for 11.8 days and regularly aggregates up to 22mm (0.87") of precipitation. In Harpenden, during the entire year, the rain falls for 160.5 days and collects up to 325mm (12.8") of precipitation.Snowfall
January through April, November and December are months with snowfall. In January, it is snowing for 3.2 days. Throughout January, 21mm (0.83") of snow is accumulated. Throughout the year, in Harpenden, there are 10.3 snowfall days, and 81mm (3.19") of snow is accumulated.Daylight
In Harpenden, the average length of the day in January is 8h and 24min.On the first day of January in Harpenden, sunrise is at 8:08 am and sunset at 4:01 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:46 pm GMT.
Sunshine
In January, the average sunshine is 4.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in January converts into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Harpenden?
How cold is it in Harpenden in January?
What is the average humidity in January in Harpenden?
How many days does it rain in January in Harpenden?
How much does it snow in Harpenden in January?
How many hours of daylight does Harpenden have in January?
When are sunrise and sunset in January in Harpenden?
How long on average sun shines in January in Harpenden?
What are the months with the lowest UV index in Harpenden?
What is the UV index reading in January in Harpenden?
Average temperature in January
Harpenden, United Kingdom
- Average high temperature in January: 6.3°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in January: 1.6°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 (1.6°C).
Average pressure in January
Harpenden, 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 (1010.3mbar).
Average wind speed in January
Harpenden, United Kingdom
- Average wind speed in January: 17.7km/h
The windiest months (with the highest average wind speed) are February and December (18.4km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in January
Harpenden, United Kingdom
- Average humidity in January: 89%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (77%).
Average rainfall in January
Harpenden, United Kingdom
- Average rainfall in January: 22mm
The wettest month (with the highest rainfall) is June (43mm).
The driest month (with the least rainfall) is September (19mm).
Average rainfall days in January
Harpenden, United Kingdom
- Average rainfall days in January: 11.8 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in January
Harpenden, United Kingdom
- Average snowfall in January: 21mm
The month with the highest snowfall is February (29mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in January
Harpenden, United Kingdom
- Average snowfall days in January: 3.2 days
The month with the highest number of snowfall days is February (3.6 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
Harpenden, 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 months with the most sunshine are July and August (Average sunshine: 7h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in January
Harpenden, United Kingdom
- Average sunshine days in January: 13.2 days
The month with the most sunshine days is March (15.1 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in January
Harpenden, 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
Harpenden, United Kingdom
- Average cloud cover in January: 58
The months with the most cloud cover are February and November (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 49).
Average visibility in January
Harpenden, 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).
