Climate and monthly weather forecastSiston, United Kingdom
Climate and monthly weather forecast
Weather in January
January, the same as December, in Siston, United Kingdom, is another chilly winter month, with an average temperature fluctuating between 7°C (44.6°F) and 2.3°C (36.1°F). Siston reaches its lowest average temperatures in January, measuring 7°C (44.6°F) at the peak and 2.3°C (36.1°F) at the lowest. Weather in January »Weather in February
The last month of the winter, February, is another chilly month in Siston, United Kingdom, with an average temperature ranging between max 7.7°C (45.9°F) and min 2.6°C (36.7°F). With the transition into February, Siston notes an average high-temperature of a still chilly 7.7°C (45.9°F), closely resembling January. Weather in February »Weather in March
March, the first month of the spring in Siston, is a cool month, with an average temperature ranging between max 10°C (50°F) and min 2.8°C (37°F). During March, Siston observes a subtle ascent to a cool 10°C (50°F) from February's 7.7°C (45.9°F) in the average high-temperature. Weather in March »Weather in April
April is a mild spring month in Siston, United Kingdom, with an average temperature fluctuating between 13.3°C (55.9°F) and 4.3°C (39.7°F). Siston observes a slight ascent in average high-temperatures during April, adjusting from a cool 10°C (50°F) in March to a mild 13.3°C (55.9°F). Weather in April »Weather in May
The last month of the spring, May, is also a moderate month in Siston, United Kingdom, with an average temperature ranging between max 15.8°C (60.4°F) and min 7.2°C (45°F). With the onset of May, Siston's average high-temperature clocks in at a still refreshing 15.8°C (60.4°F), showing a minor fluctuation from the previous month. Weather in May »Weather in June
The first month of the summer, June, is a refreshing month in Siston, United Kingdom, with an average temperature varying between 9.8°C (49.6°F) and 18.4°C (65.1°F). With the onset of June, a modest change to a comfortable 18.4°C (65.1°F) from May's 15.8°C (60.4°F) is noted in high-temperature. Weather in June »Weather in July
July is an agreeable summer month in Siston, United Kingdom, with temperature in the range of an average high of 20.7°C (69.3°F) and an average low of 12.3°C (54.1°F). The temperatures reach their highest averages in July, with highs of 20.7°C (69.3°F) and lows of 12.3°C (54.1°F). Weather in July »Weather in August
The last month of the summer, August, is another refreshing month in Siston, United Kingdom, with an average temperature varying between 12.3°C (54.1°F) and 19.9°C (67.8°F). The commencement of August brings an average high-temperature of a refreshing 19.9°C (67.8°F), marking an inconsequential divergence from July. Weather in August »Weather in September
September, the first month of the autumn in Siston, is still a refreshing month, with an average temperature fluctuating between 17.7°C (63.9°F) and 10.2°C (50.4°F). An average high-temperature of a still enjoyable 17.7°C (63.9°F) marks September, exhibiting a close resemblance to the conditions in August. Weather in September »Weather in October
October, the same as September, in Siston, United Kingdom, is another refreshing autumn month, with an average temperature fluctuating between 14.2°C (57.6°F) and 8.4°C (47.1°F). The onset of October brings a small shift in high-temperatures, falling from a refreshing 17.7°C (63.9°F) in September to a moderate 14.2°C (57.6°F). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Siston, United Kingdom, with an average temperature ranging between max 10°C (50°F) and min 5.4°C (41.7°F). In Siston, the beginning of November is marked by a marginally lowered average high-temperature, shifting from October's refreshing 14.2°C (57.6°F) to a cool 10°C (50°F). Weather in November »Weather in December
December, the first month of the winter in Siston, is also a frosty month, with an average temperature varying between 3.8°C (38.8°F) and 8.1°C (46.6°F). In December, Siston experiences a minor shift in meteorological conditions with average high-temperatures marked at a frosty 8.1°C (46.6°F), closely mirroring the climate in November. Weather in December »Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January brings the lowest temperatures, with an average high of 7°C (44.6°F) and an average low of 2.3°C (36.1°F).
Throughout the year, in Siston, United Kingdom, there are 175.9 rainfall days, and 386mm (15.2") of precipitation is accumulated.
Months with snowfall in Siston, United Kingdom, are January through March, November and December.
The month with the most snowfall in Siston is January, when snow falls for 1.8 days and typically aggregates up to 14mm (0.55") of snow.
In Siston, United Kingdom, during the entire year, snow falls for 6.5 days and aggregates up to 28mm (1.1") of snow.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Siston, United Kingdom.
February and November, with an average of 3.6h of sunshine, are months with the least sunshine.
April is the month with the least rainfall in Siston, United Kingdom. Rain falls for 13.2 days and accumulates 21mm (0.83") of precipitation.
April through October are months without snowfall in Siston, United Kingdom.
June has the longest days of the year, with an average of 16h and 36min of daylight.
July temperatures in Siston, United Kingdom, tend to peak at an average high of 20.7°C (69.3°F) and dip to a low of 12.3°C (54.1°F).
July is the least humid month, with an average relative humidity of 80%.
The month with the most sunshine is July, with an average of 7.5h of sunshine.
July is the month with the highest UV index, with an average maximum UV index of 5.
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Siston, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to BST.
November is the month with the most rainfall. Rain falls for 17.5 days and accumulates 47mm (1.85") of precipitation.
With an average relative humidity of 89%, December is the most humid month.
The month with the shortest days in Siston, United Kingdom, is December, with an average of 7h and 54min of daylight.
Average temperature
Siston, United Kingdom
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (7°C).
The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure
Siston, United Kingdom
- Average pressure in January:
1014.2mbar - Average pressure in February:
1013.6mbar - Average pressure in March:
1015.4mbar - Average pressure in April:
1015.4mbar - Average pressure in May:
1016.7mbar - Average pressure in June:
1016mbar
- Average pressure in July:
1015.2mbar - Average pressure in August:
1014.7mbar - Average pressure in September:
1016.8mbar - Average pressure in October:
1014.8mbar - Average pressure in November:
1010.1mbar - Average pressure in December:
1014.2mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.1mbar).
Average wind speed
Siston, United Kingdom
- Average wind speed in January:
17.2km/h - Average wind speed in February:
18.1km/h - Average wind speed in March:
16.4km/h - Average wind speed in April:
13.7km/h - Average wind speed in May:
13.5km/h - Average wind speed in June:
13km/h
- Average wind speed in July:
12.9km/h - Average wind speed in August:
13.2km/h - Average wind speed in September:
13.1km/h - Average wind speed in October:
14.8km/h - Average wind speed in November:
16.3km/h - Average wind speed in December:
17.4km/h
The windiest month (with the highest average wind speed) is February (18.1km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity
Siston, United Kingdom
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is July (80%).
Average rainfall
Siston, United Kingdom
The wettest month (with the highest rainfall) is November (47mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days
Siston, United Kingdom
- Average rainfall days in January:
14.8 days - Average rainfall days in February:
12.2 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
14.1 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
14.6 days - Average rainfall days in November:
17.5 days - Average rainfall days in December:
14.9 days
The month with the highest number of rainy days is November (17.5 days).
The month with the least rainy days is February (12.2 days).
Average snowfall
Siston, United Kingdom
The month with the highest snowfall is January (14mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Siston, United Kingdom
- Average snowfall days in January:
1.8 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
0.9 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Siston, United Kingdom
- Average daylight in January:
8h and 30min - Average daylight in February:
10h and 0min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 54min - Average daylight in May:
15h and 36min - Average daylight in June:
16h and 36min
- Average daylight in July:
16h and 6min - Average daylight in August:
14h and 30min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 42min - Average daylight in November:
8h and 54min - Average daylight in December:
7h and 54min
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:
3h and 54min - Average sunshine in February:
3h and 36min - Average sunshine in March:
5h and 24min - Average sunshine in April:
7h and 6min - Average sunshine in May:
7h and 12min - Average sunshine in June:
7h and 0min
- Average sunshine in July:
7h and 30min - Average sunshine in August:
6h and 48min - Average sunshine in September:
6h and 36min - Average sunshine in October:
4h and 12min - Average sunshine in November:
3h and 36min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 7h and 30min).
The months with the least sunshine are February and November (Average sunshine: 3h and 36min).
Average sunshine days
Siston, United Kingdom
- Average sunshine days in January:
12.2 days - Average sunshine days in February:
11.1 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
13 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
9.1 days - Average sunshine days in September:
13.1 days - Average sunshine days in October:
13.1 days - Average sunshine days in November:
9.8 days - Average sunshine days in December:
12.9 days
The month with the most sunshine days is March (14.5 days).
The month with the least sunshine days is August (9.1 days).
Average UV index
Siston, United Kingdom
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
Siston, United Kingdom
The month with the most cloud cover is November (Cloud cover 65).
The month with the least cloud cover is April (Cloud cover 53).
Average visibility
Siston, United Kingdom
The months with the highest visibility are January, February, March, April, May, July and December (9km).
The months with the lowest visibility are June, August, September, October and November (8km).
