Climate and monthly weather forecastRoy-Boissy, France
Climate and monthly weather forecast
Weather in January
January, like December, in Roy-Boissy, France, is a wintry winter month, with an average temperature fluctuating between 1°C (33.8°F) and 5.5°C (41.9°F). Temperature records mark January as the coldest month, with highs averaging 5.5°C (41.9°F) and lows at 1°C (33.8°F). Weather in January »Weather in February
The last month of the winter, February, is a chilly month in Roy-Boissy, France, with an average temperature varying between 1.2°C (34.2°F) and 6.8°C (44.2°F). Roy-Boissy's entry into February measures an average high-temperature of a chilly 6.8°C (44.2°F), closely parallel to the preceding month. Weather in February »Weather in March
March, the first month of the spring in Roy-Boissy, is a fresh month, with an average temperature fluctuating between 3°C (37.4°F) and 10.8°C (51.4°F). The start of March brings a subtle shift in the average high-temperature, edging up from February's frosty 6.8°C (44.2°F) to a fresh 10.8°C (51.4°F). Weather in March »Weather in April
April is a refreshing spring month in Roy-Boissy, France, with an average temperature ranging between max 14.8°C (58.6°F) and min 5.2°C (41.4°F). As Roy-Boissy welcomes April, the average high-temperature displays a subtle shift, adjusting from a fresh 10.8°C (51.4°F) in March to a moderate 14.8°C (58.6°F). Weather in April »Weather in May
May, the last month of the spring in Roy-Boissy, is a comfortable month, with an average temperature varying between 7.4°C (45.3°F) and 16.9°C (62.4°F). The arrival of May sees a recorded average high-temperature of an enjoyable 16.9°C (62.4°F), showing little divergence from the previous month's conditions. Weather in May »Weather in June
June, the first month of the summer in Roy-Boissy, is a pleasant month, with an average temperature fluctuating between 20.1°C (68.2°F) and 10.8°C (51.4°F). The start of June brings a subtle rise in the average high-temperature, moving from an enjoyable 16.9°C (62.4°F) in May to an agreeable 20.1°C (68.2°F). Weather in June »Weather in July
July, the same as June, in Roy-Boissy, France, is another pleasant summer month, with an average temperature varying between 22.8°C (73°F) and 12.8°C (55°F). Upon the beginning of July, Roy-Boissy's high-temperatures register at a still agreeable 22.8°C (73°F), closely mirroring the preceding month. Weather in July »Weather in August
August, the last month of the summer in Roy-Boissy, is another pleasant month, with an average temperature varying between 22.9°C (73.2°F) and 13.1°C (55.6°F). August is Roy-Boissy's warmest month, registering average high temperatures of 22.9°C (73.2°F) and lows of 13.1°C (55.6°F). Weather in August »Weather in September
September, the first month of the autumn in Roy-Boissy, is still a refreshing month, with an average temperature ranging between min 10.5°C (50.9°F) and max 19.6°C (67.3°F). With the onset of September, Roy-Boissy's climate undergoes a slight change as the average high-temperature moves from an agreeable 22.9°C (73.2°F) in August to a refreshing 19.6°C (67.3°F). Weather in September »Weather in October
October, the same as September, in Roy-Boissy, France, is another refreshing autumn month, with an average temperature fluctuating between 15.3°C (59.5°F) and 8.1°C (46.6°F). The onset of October results in a small decrease in the average high-temperature, moderately receding from an enjoyable 19.6°C (67.3°F) in September to a mild 15.3°C (59.5°F). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Roy-Boissy, France, with temperature in the range of an average high of 9.9°C (49.8°F) and an average low of 4.9°C (40.8°F). Roy-Boissy's progression into November involves a drop in the average high-temperature, receding from a mild 15.3°C (59.5°F) in October to a chilly 9.9°C (49.8°F). Weather in November »Weather in December
December, the first month of the winter in Roy-Boissy, is also a frosty month, with temperature in the range of an average low of 2.5°C (36.5°F) and an average high of 6.7°C (44.1°F). The shift from November to December coincides with a small decrease in the average high-temperature, down to a still chilly 6.7°C (44.1°F) from a frosty 9.9°C (49.8°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
The coldest time of the year in Roy-Boissy, France, is January, with temperatures averaging a high of 5.5°C (41.9°F) and a low of 1°C (33.8°F).
In Roy-Boissy, during the entire year, the rain falls for 176.9 days and collects up to 456mm (17.95") of precipitation.
Months with snowfall in Roy-Boissy, France, are January through March, November and December.
The month with the most snowfall is January, when snow falls for 2.3 days and typically aggregates up to 23mm (0.91") of snow.
Throughout the year, in Roy-Boissy, there are 8.8 snowfall days, and 72mm (2.83") of snow is accumulated.
January has the least sunshine of the year, with an average of 3.5h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
April through October are months without snowfall.
With an average of 16h and 12min of daylight, June has the longest days of the year in Roy-Boissy, France.
The month with the most sunshine in Roy-Boissy is June, with an average of 8.8h of sunshine.
The months with the highest UV index are June through August, with an average maximum UV index of 5.
The warmest period is August, when temperatures fluctuate between an average high of 22.9°C (73.2°F) and a low of 13.1°C (55.6°F).
The least humid month is August, with an average relative humidity of 76%.
September is the month with the least rainfall in Roy-Boissy, France. Rain falls for 11.4 days and accumulates 21mm (0.83") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Roy-Boissy, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
December is the most humid month, with an average relative humidity of 89%.
December is the month with the most rainfall in Roy-Boissy. Rain falls for 15.9 days and accumulates 55mm (2.17") of precipitation.
With an average of 8h and 12min of daylight, December has the shortest days of the year.
Average temperature
Roy-Boissy, France
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (5.5°C).
The month with the highest average low temperature is August (13.1°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure
Roy-Boissy, France
- Average pressure in January:
1017mbar - Average pressure in February:
1015.8mbar - Average pressure in March:
1016.4mbar - Average pressure in April:
1015.8mbar - Average pressure in May:
1016.9mbar - Average pressure in June:
1016.7mbar
- Average pressure in July:
1016.4mbar - Average pressure in August:
1016.3mbar - Average pressure in September:
1018mbar - Average pressure in October:
1016.7mbar - Average pressure in November:
1012.8mbar - Average pressure in December:
1017.5mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed
Roy-Boissy, France
- Average wind speed in January:
16.5km/h - Average wind speed in February:
17.5km/h - Average wind speed in March:
15.9km/h - Average wind speed in April:
12.9km/h - Average wind speed in May:
12.8km/h - Average wind speed in June:
12.4km/h
- Average wind speed in July:
11.8km/h - Average wind speed in August:
11.2km/h - Average wind speed in September:
11.7km/h - Average wind speed in October:
13.7km/h - Average wind speed in November:
15.5km/h - Average wind speed in December:
17.1km/h
The windiest month (with the highest average wind speed) is February (17.5km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity
Roy-Boissy, France
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (76%).
Average rainfall
Roy-Boissy, France
The wettest month (with the highest rainfall) is December (55mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days
Roy-Boissy, France
- Average rainfall days in January:
15.2 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
14 days - Average rainfall days in May:
16.2 days - Average rainfall days in June:
17.5 days
- Average rainfall days in July:
18.2 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
14 days - Average rainfall days in December:
15.9 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is February (11.3 days).
Average snowfall
Roy-Boissy, France
The month with the highest snowfall is January (23mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Roy-Boissy, France
- Average snowfall days in January:
2.3 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
0.7 days - Average snowfall days in April:
0.2 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:
0.5 days - Average snowfall days in December:
2.4 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Roy-Boissy, France
- Average daylight in January:
8h and 42min - Average daylight in February:
10h and 6min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 48min - Average daylight in May:
15h and 24min - Average daylight in June:
16h and 12min
- Average daylight in July:
15h and 48min - Average daylight in August:
14h and 24min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 6min - Average daylight in December:
8h and 12min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in January:
3h and 30min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 42min - Average sunshine in April:
7h and 36min - Average sunshine in May:
7h and 48min - Average sunshine in June:
8h and 48min
- Average sunshine in July:
8h and 42min - Average sunshine in August:
8h and 36min - Average sunshine in September:
7h and 18min - Average sunshine in October:
5h and 30min - Average sunshine in November:
3h and 48min - Average sunshine in December:
3h and 54min
The month with the most sunshine is June (Average sunshine: 8h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Roy-Boissy, France
- Average sunshine days in January:
12.3 days - Average sunshine days in February:
11.4 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
9.3 days - Average sunshine days in August:
10.8 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
12.7 days - Average sunshine days in December:
10.6 days
The month with the most sunshine days is March (15.7 days).
The month with the least sunshine days is July (9.3 days).
Average UV index
Roy-Boissy, France
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Roy-Boissy, France
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 43).
Average visibility
Roy-Boissy, France
The months with the highest visibility are February, March, April, June, July, August, September, October and December (9km).
The months with the lowest visibility are January, May and November (8km).
