The wettest month is July with an average of 3mm of rain..
Average High Low TemperatureHemel Hempstead
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
Average RainfallHemel Hempstead
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
Chance of Sunny DayHemel Hempstead
What is Chance of Sunny Day?
By taking the maximum available sunny hours in a day (ie: from sunrise to sunset) and the actual sunhsine hours measured. So if there are 12 hours of daylight time and 6 hours of sunshine, it is 50%
What is Chance of Sunny Day?
By taking the maximum available sunny hours in a day (ie: from sunrise to sunset) and the actual sunhsine hours measured. So if there are 12 hours of daylight time and 6 hours of sunshine, it is 50%
Chance of RainHemel Hempstead
What is Chance of Rain?
This is based on historical weather data, how many days has it rained in the past during this month over a period of years of recorded weather
What is Chance of Rain?
This is based on historical weather data, how many days has it rained in the past during this month over a period of years of recorded weather
Chance of Windy DayHemel Hempstead
What is Chance of Windy Day?
Taking historical wind data for a month at a certain threshold wind speed. Take the number of days the wind was above this threshold, and divide that by the days in the month to determine the chance of a windy day
What is Chance of Windy Day?
Taking historical wind data for a month at a certain threshold wind speed. Take the number of days the wind was above this threshold, and divide that by the days in the month to determine the chance of a windy day
Chance of Cloudy DayHemel Hempstead
What is Chance of Cloudy Day?
This is based on the sunshine hours per day minus the daylight hours, if the sunshine hours are less than half of the daylight hours, it is labeled a cloudy day
What is Chance of Cloudy Day?
This is based on the sunshine hours per day minus the daylight hours, if the sunshine hours are less than half of the daylight hours, it is labeled a cloudy day
Chance of Fog DayHemel Hempstead
What is Chance of Fog Day?
Based on historical weather data, this percentage is determined by the chance of fog for that month over a preiod of years
What is Chance of Fog Day?
Based on historical weather data, this percentage is determined by the chance of fog for that month over a preiod of years
Chance of Snow DayHemel Hempstead
What is Chance of Snow Day?
Based on historical weather data, this percentage is determined by the chance of snow for that month over a preiod of years
What is Chance of Snow Day?
Based on historical weather data, this percentage is determined by the chance of snow for that month over a preiod of years