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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Slough, United Kingdom, is a frosty winter month, with an average temperature fluctuating between 6.6°C (43.9°F) and 1.8°C (35.2°F). January, known for its average high temperature of 6.6°C (43.9°F) and an average low temperature of 1.8°C (35.2°F), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is another chilly month in Slough, United Kingdom, with temperature in the range of an average low of 2.3°C (36.1°F) and an average high of 7.4°C (45.3°F). Slough, United Kingdom, ushers in February with an average high-temperature of a still frosty 7.4°C (45.3°F), showing a close resemblance to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Slough, is a fresh month, with an average temperature fluctuating between 2.9°C (37.2°F) and 10.4°C (50.7°F). The shift into March is characterized by a subtle rise in the average high-temperature, transitioning from February's frosty 7.4°C (45.3°F) to a fresh 10.4°C (50.7°F). Weather in March »
Weather in April
April in Slough, United Kingdom, is a mild spring month, with an average temperature ranging between max 14.1°C (57.4°F) and min 4.8°C (40.6°F). The start of April signals a slight increase in the average high-temperature, moving from a fresh 10.4°C (50.7°F) in March to a moderate 14.1°C (57.4°F). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Slough, United Kingdom, with temperature in the range of an average low of 7.5°C (45.5°F) and an average high of 16.3°C (61.3°F). During May, Slough records an average high-temperature of a still refreshing 16.3°C (61.3°F), marking a slight divergence from April's 14.1°C (57.4°F). Weather in May »
Weather in June
June, the first month of the summer in Slough, is still a refreshing month, with temperature in the range of an average low of 10.3°C (50.5°F) and an average high of 19.2°C (66.6°F). Welcoming June, Slough notes an average high-temperature of a still refreshing 19.2°C (66.6°F), nearly consistent with May's 16.3°C (61.3°F). Weather in June »
Weather in July
July in Slough, United Kingdom, is a pleasant summer month, with an average temperature varying between 21.5°C (70.7°F) and 12.8°C (55°F). July, with an average high of 21.5°C (70.7°F) and a low of 12.8°C (55°F), signifies the warmest month of the year. Weather in July »
Weather in August
The last month of the summer, August, is another pleasant month in Slough, United Kingdom, with an average temperature ranging between min 13.2°C (55.8°F) and max 21.2°C (70.2°F). Slough's average high-temperature in August is a still agreeable 21.2°C (70.2°F), marking an insignificant difference from the 21.5°C (70.7°F) of July. Weather in August »
Weather in September
The first month of the autumn, September, is also an enjoyable month in Slough, United Kingdom, with an average temperature varying between 10.5°C (50.9°F) and 18.5°C (65.3°F). The dawn of September sees an average high-temperature of a refreshing 18.5°C (65.3°F), subtly contrasting with August's 21.2°C (70.2°F). Weather in September »
Weather in October
October, the same as September, in Slough, United Kingdom, is another mild autumn month, with an average temperature ranging between max 14.9°C (58.8°F) and min 8.7°C (47.7°F). October heralds a minor drop in average high-temperature, sliding from September's enjoyable 18.5°C (65.3°F) to a still refreshing 14.9°C (58.8°F). Weather in October »
Weather in November
November, the last month of the autumn in Slough, is another cool month, with an average temperature varying between 10.2°C (50.4°F) and 5.5°C (41.9°F). The onset of November brings a small shift in high-temperatures, falling from a mild 14.9°C (58.8°F) in October to a cool 10.2°C (50.4°F). Weather in November »
Weather in December
December, the first month of the winter in Slough, is also a frosty month, with an average temperature fluctuating between 7.7°C (45.9°F) and 3.1°C (37.6°F). The advent of December denotes an average high-temperature of a chilly 7.7°C (45.9°F), subtly different from November's 10.2°C (50.4°F). Weather in December »
Updated: Feb 8, 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
What part of the year is the coldest in Slough?
January, having an average high-temperature of 6.6°C (43.9°F) and an average low-temperature of 1.8°C (35.2°F), is the coldest month.
How much does it rain in Slough?
Throughout the year, there are 149.7 rainfall days, and 270mm (10.63") of precipitation is accumulated.
When does it snow in Slough?
Months with snowfall in Slough are January through March and December.
What is the snowiest month in Slough?
January is the month with the most snowfall. Snow falls for 1.6 days and accumulates 12mm (0.47") of snow.
How many days does it snow in Slough?
Throughout the year, there are 6 snowfall days, and 27mm (1.06") of snow is accumulated.
What are the months with the lowest UV index in Slough?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the month with the least sunshine in Slough?
With an average of 3.7h of sunshine, February has the least sunshine of the year in Slough.
What is the driest month in Slough?
April is the month with the least rainfall. Rain falls for 12.3 days and accumulates 16mm (0.63") of precipitation.
When it does not snow in Slough?
April through November are months without snowfall.
What is the rainiest month in Slough?
June is the month with the most rainfall in Slough. Rain falls for 15.1 days and accumulates 34mm (1.34") of precipitation.
When are the longest days in Slough?
June has the longest days of the year, with an average of 16h and 36min of daylight.
What time of the year is the hottest in Slough?
In Slough, United Kingdom, temperatures reach their average annual highs in July, measuring 21.5°C (70.7°F) and a minimum average of 12.8°C (55°F).
What are the least humid months in Slough?
July and August, with an average relative humidity of 76%, are the least humid months.
What month has the most sunshine in Slough?
With an average of 7.9h of sunshine, July has the most sunshine of the year in Slough, United Kingdom.
When is the highest UV index in Slough?
The month with the highest UV index in Slough is July, with an average maximum UV index of 5.
When is Daylight Saving Time (DST) in Slough?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends, 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.
What is the most humid month in Slough?
With an average relative humidity of 89%, December is the most humid month in Slough, United Kingdom.
What is the month with the shortest days in Slough?
The month with the shortest days in Slough, United Kingdom, is December, with an average of 7h and 54min of daylight.
Average temperature
Slough, United Kingdom
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (6.6°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 (1.8°C).
Average pressure
Slough, United Kingdom
- Average pressure in January:
1014.5mbar - Average pressure in February:
1013.8mbar - Average pressure in March:
1015.5mbar - Average pressure in April:
1015.6mbar - Average pressure in May:
1016.8mbar - Average pressure in June:
1016.2mbar
- Average pressure in July:
1015.3mbar - Average pressure in August:
1014.8mbar - Average pressure in September:
1016.9mbar - Average pressure in October:
1015mbar - Average pressure in November:
1010.4mbar - Average pressure in December:
1014.4mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed
Slough, United Kingdom
- Average wind speed in January:
16.9km/h - Average wind speed in February:
17.7km/h - Average wind speed in March:
16.2km/h - Average wind speed in April:
13.6km/h - Average wind speed in May:
13.5km/h - Average wind speed in June:
13.1km/h
- Average wind speed in July:
12.8km/h - Average wind speed in August:
12.9km/h - Average wind speed in September:
12.8km/h - Average wind speed in October:
14.7km/h - Average wind speed in November:
15.9km/h - Average wind speed in December:
17.5km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest months (with the lowest average wind speed) are July and September (12.8km/h).
Average humidity
Slough, United Kingdom
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall
Slough, United Kingdom
The wettest month (with the highest rainfall) is June (34mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days
Slough, United Kingdom
- Average rainfall days in January:
11.5 days - Average rainfall days in February:
10.4 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
13.7 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
10.2 days - Average rainfall days in November:
12 days - Average rainfall days in December:
12 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is September (9.9 days).
Average snowfall
Slough, United Kingdom
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Slough, United Kingdom
- Average snowfall days in January:
1.6 days - Average snowfall days in February:
2.3 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0.1 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:
0.1 days - Average snowfall days in December:
1.1 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Slough, United Kingdom
- Average daylight in January:
8h and 2min - Average daylight in February:
10h and 0min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 5min - Average daylight in May:
15h and 4min - Average daylight in June:
16h and 4min
- Average daylight in July:
16h and 1min - Average daylight in August:
14h and 4min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 4min - Average daylight in November:
8h and 5min - Average daylight in December:
7h and 5min
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 - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 3min - Average sunshine in April:
7h and 3min - Average sunshine in May:
7h and 2min - Average sunshine in June:
7h and 2min
- Average sunshine in July:
7h and 5min - Average sunshine in August:
7h and 4min - Average sunshine in September:
7h and 1min - Average sunshine in October:
4h and 3min - Average sunshine in November:
4h and 0min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days
Slough, United Kingdom
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
16.1 days - Average sunshine days in April:
14 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
16.6 days - Average sunshine days in November:
15.1 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is July (10.9 days).
Average UV index
Slough, 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
Slough, United Kingdom
The month with the most cloud cover is November (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 49).
Average visibility
Slough, United Kingdom
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).
