Climate and monthly weather forecastHeilly, France
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Heilly, France, with an average temperature fluctuating between 1°C (33.8°F) and 5.8°C (42.4°F). In Heilly, France, January records the lowest average temperatures, peaking at 5.8°C (42.4°F) and reaching a low of 1°C (33.8°F). Weather in January »Weather in February
February, the last month of the winter in Heilly, is a chilly month, with an average temperature fluctuating between 1.6°C (34.9°F) and 6.9°C (44.4°F). With the onset of February, a modest change to a chilly 6.9°C (44.4°F) from January's 5.8°C (42.4°F) is noted in high-temperature. Weather in February »Weather in March
March, the first month of the spring in Heilly, is a cool month, with an average temperature varying between 3.1°C (37.6°F) and 10.7°C (51.3°F). The onset of March marks a slight increase in the average high-temperature, moving from a chilly 6.9°C (44.4°F) in February to a cool 10.7°C (51.3°F). Weather in March »Weather in April
April is a moderate spring month in Heilly, France, with an average temperature ranging between max 14.8°C (58.6°F) and min 5.2°C (41.4°F). The commencement of April sees a minor shift in the average high-temperature, moving from a cool 10.7°C (51.3°F) in March to a refreshing 14.8°C (58.6°F). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Heilly, France, with an average temperature varying between 7.3°C (45.1°F) and 16.8°C (62.2°F). May's advent notes a subtle adjustment in average high-temperature to an enjoyable 16.8°C (62.2°F) from April. Weather in May »Weather in June
June, the first month of the summer in Heilly, is a pleasant month, with an average temperature ranging between min 10.6°C (51.1°F) and max 20.1°C (68.2°F). The start of June brings a subtle shift in the average high-temperature, edging up from May's enjoyable 16.8°C (62.2°F) to an agreeable 20.1°C (68.2°F). Weather in June »Weather in July
July, the same as June, in Heilly, France, is another pleasant summer month, with an average temperature fluctuating between 22.5°C (72.5°F) and 12.8°C (55°F). July's onset brings an average high-temperature of a still agreeable 22.5°C (72.5°F), showing a minute difference from June's 20.1°C (68.2°F). Weather in July »Weather in August
August, the last month of the summer in Heilly, is another pleasant month, with an average temperature ranging between min 13.3°C (55.9°F) and max 22.8°C (73°F). August, with average temperatures reaching a high of 22.8°C (73°F) and a low of 13.3°C (55.9°F), is the warmest month. Weather in August »Weather in September
The first month of the autumn, September, is still a comfortable month in Heilly, France, with temperature in the range of an average low of 11°C (51.8°F) and an average high of 19.4°C (66.9°F). Heilly's September weather shows a modest shift in high-temperatures, falling from August's agreeable 22.8°C (73°F) to a comfortable 19.4°C (66.9°F). Weather in September »Weather in October
October, the same as September, in Heilly, France, is another mild autumn month, with an average temperature varying between 15.2°C (59.4°F) and 8.5°C (47.3°F). October is marked by a subtle drop in average high-temperatures, transitioning from a comfortable 19.4°C (66.9°F) in September to a still refreshing 15.2°C (59.4°F). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Heilly, France, with an average temperature ranging between min 5.1°C (41.2°F) and max 10°C (50°F). Heilly's average high-temperature decreases in November, falling from a mild 15.2°C (59.4°F) in October to a fresh 10°C (50°F). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Heilly, France, with an average temperature fluctuating between 6.8°C (44.2°F) and 2.7°C (36.9°F). In Heilly, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's cool 10°C (50°F) to a frosty 6.8°C (44.2°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
January stands out as Heilly's coldest month, with an average high-temperature of 5.8°C (42.4°F) and a low-temperature of 1°C (33.8°F).
January and December, with an average relative humidity of 88%, are most humid months in Heilly, France.
In Heilly, France, during the entire year, the rain falls for 163.7 days and collects up to 340mm (13.39") of precipitation.
January through March, November and December are months with snowfall in Heilly.
January is the month with the most snowfall in Heilly, France. Snow falls for 2 days and accumulates 17mm (0.67") of snow.
Throughout the year, in Heilly, there are 7.1 snowfall days, and 38mm (1.5") of snow is accumulated.
The month with the least sunshine is January, with an average of 3.7h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Heilly.
April through October are months without snowfall in Heilly, France.
With an average of 16h and 18min of daylight, June has the longest days of the year.
June has the most sunshine of the year, with an average of 9.4h of sunshine.
The months with the highest UV index in Heilly, France, are June through August, with an average maximum UV index of 5.
August is the warmest month in Heilly, France, with the temperature often reaching an average high of 22.8°C (73°F) and an average low of 13.3°C (55.9°F).
With an average relative humidity of 76%, August is the least humid month in Heilly, France.
September is the month with the least rainfall in Heilly. Rain falls for 11.3 days and accumulates 16mm (0.63") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Heilly, France, 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.
The month with the most rainfall in Heilly is December, when the rain falls for 14.2 days and typically aggregates up to 43mm (1.69") of precipitation.
December has the shortest days of the year, with an average of 8h and 12min of daylight.
Average temperature
Heilly, France
The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is January (5.8°C).
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure
Heilly, France
- Average pressure in January:
1016.6mbar - Average pressure in February:
1015.5mbar - Average pressure in March:
1016.2mbar - Average pressure in April:
1015.8mbar - Average pressure in May:
1016.9mbar - Average pressure in June:
1016.6mbar
- Average pressure in July:
1016.2mbar - Average pressure in August:
1016.1mbar - Average pressure in September:
1017.8mbar - Average pressure in October:
1016.5mbar - Average pressure in November:
1012.5mbar - Average pressure in December:
1017mbar
The month with the highest atmospheric pressure is September (1017.8mbar).
The month with the lowest atmospheric pressure is November (1012.5mbar).
Average wind speed
Heilly, France
- Average wind speed in January:
17.4km/h - Average wind speed in February:
18.2km/h - Average wind speed in March:
16.5km/h - Average wind speed in April:
13.3km/h - Average wind speed in May:
13.3km/h - Average wind speed in June:
12.8km/h
- Average wind speed in July:
12.3km/h - Average wind speed in August:
11.9km/h - Average wind speed in September:
12.3km/h - Average wind speed in October:
14.4km/h - Average wind speed in November:
16.3km/h - Average wind speed in December:
17.9km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is August (11.9km/h).
Average humidity
Heilly, France
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (76%).
Average rainfall
Heilly, France
The wettest month (with the highest rainfall) is December (43mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days
Heilly, France
- Average rainfall days in January:
14.3 days - Average rainfall days in February:
12.3 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
11.8 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
16.1 days - Average rainfall days in August:
15.5 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
12.8 days - Average rainfall days in November:
13.8 days - Average rainfall days in December:
14.2 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is September (11.3 days).
Average snowfall
Heilly, France
The month with the highest snowfall is January (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Heilly, France
- Average snowfall days in January:
2 days - Average snowfall days in February:
2.8 days - Average snowfall days in March:
0.5 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:
0.4 days - Average snowfall days in December:
1.3 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Heilly, 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 18min
- Average daylight in July:
15h and 54min - Average daylight in August:
14h and 24min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 42min - 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 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
4h and 48min - Average sunshine in March:
5h and 54min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 6min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
9h and 6min - Average sunshine in August:
8h and 54min - Average sunshine in September:
7h and 18min - Average sunshine in October:
5h and 36min - Average sunshine in November:
4h and 6min - Average sunshine in December:
4h and 0min
The month with the most sunshine is June (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Heilly, France
- Average sunshine days in January:
12.5 days - Average sunshine days in February:
12.1 days - Average sunshine days in March:
15.1 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
12 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
11.5 days - Average sunshine days in September:
14.8 days - Average sunshine days in October:
13.8 days - Average sunshine days in November:
12.5 days - Average sunshine days in December:
12.1 days
The month with the most sunshine days is March (15.1 days).
The month with the least sunshine days is July (10.6 days).
Average UV index
Heilly, 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
Heilly, France
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility
Heilly, France
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
