Climate and monthly weather forecastCossonay, Switzerland
Climate and monthly weather forecast
Weather in January
January, like December, in Cossonay, Switzerland, is another cold winter month, with temperature in the range of an average high of 3.3°C (37.9°F) and an average low of -2.2°C (28°F). January is the month when Cossonay experiences its coldest temperatures, averaging a high of 3.3°C (37.9°F) and a low of -2.2°C (28°F). Weather in January »Weather in February
February, the last month of the winter in Cossonay, is another cold month, with an average temperature ranging between max 3.8°C (38.8°F) and min -2.2°C (28°F). Cossonay marks the onset of February with an average high-temperature of a still cold 3.8°C (38.8°F), a subtle shift from January's 3.3°C (37.9°F). Weather in February »Weather in March
March, the first month of the spring in Cossonay, is a frosty month, with an average temperature ranging between max 8.2°C (46.8°F) and min 0.9°C (33.6°F). Cossonay's March weather indicates a minor ascent in high-temperatures, adjusting from a wintry 3.8°C (38.8°F) in February to a chilly 8.2°C (46.8°F). Weather in March »Weather in April
April is a moderate spring month in Cossonay, Switzerland, with an average temperature varying between 13.2°C (55.8°F) and 4.3°C (39.7°F). With the onset of April, Cossonay's weather sees a temperature rise, transitioning from a chilly 8.2°C (46.8°F) in March to a moderate 13.2°C (55.8°F). Weather in April »Weather in May
The last month of the spring, May, is another mild month in Cossonay, Switzerland, with an average temperature varying between 6.8°C (44.2°F) and 15.9°C (60.6°F). The average high-temperature during May registers at a still mild 15.9°C (60.6°F), closely corresponding to the preceding month. Weather in May »Weather in June
The first month of the summer, June, is a comfortable month in Cossonay, Switzerland, with an average temperature fluctuating between 19.8°C (67.6°F) and 10.7°C (51.3°F). With the onset of June, the average high-temperature subtly transitions from a moderate 15.9°C (60.6°F) in May to an enjoyable 19.8°C (67.6°F). Weather in June »Weather in July
July is a pleasant summer month in Cossonay, Switzerland, with an average temperature ranging between min 12.6°C (54.7°F) and max 22.2°C (72°F). July, with an average high of 22.2°C (72°F) and a low of 12.6°C (54.7°F), signifies the warmest month of the year. Weather in July »Weather in August
August, the last month of the summer in Cossonay, is also an agreeable month, with an average temperature fluctuating between 12.5°C (54.5°F) and 22.1°C (71.8°F). The onset of August brings with it an average high-temperature of a still pleasant 22.1°C (71.8°F), showing a negligible variation from the month before. Weather in August »Weather in September
The first month of the autumn, September, is still a comfortable month in Cossonay, Switzerland, with temperature in the range of an average low of 9.2°C (48.6°F) and an average high of 18.3°C (64.9°F). September reveals a small adjustment in temperature, transitioning from an average high of an agreeable 22.1°C (71.8°F) in August to a refreshing 18.3°C (64.9°F). Weather in September »Weather in October
October, the same as September, in Cossonay, Switzerland, is another mild autumn month, with temperature in the range of an average high of 14.1°C (57.4°F) and an average low of 5.7°C (42.3°F). In Cossonay, the beginning of October is marked by a marginally lowered average high-temperature, shifting from September's comfortable 18.3°C (64.9°F) to a mild 14.1°C (57.4°F). Weather in October »Weather in November
November, the last month of the autumn in Cossonay, is another chilly month, with an average temperature fluctuating between 8.7°C (47.7°F) and 2.6°C (36.7°F). The average high-temperature drops in November, from October's mild 14.1°C (57.4°F) to a chilly 8.7°C (47.7°F). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Cossonay, Switzerland, with an average temperature fluctuating between -0.4°C (31.3°F) and 4.9°C (40.8°F). December implies a soft temperature shift, with average high-temperatures reducing from November's chilly 8.7°C (47.7°F) to a wintry 4.9°C (40.8°F). Weather in December »Updated: Feb 4, 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
With average temperatures fluctuating between a high of 3.3°C (37.9°F) and a low of -2.2°C (28°F), January stands out as the coldest month in Cossonay.
January is the most humid month in Cossonay, Switzerland, with an average relative humidity of 82%.
In Cossonay, Switzerland, during the entire year, the rain falls for 185.5 days and collects up to 834mm (32.83") of precipitation.
January through May, October through December are months with snowfall.
Throughout the year, there are 40.1 snowfall days, and 721mm (28.39") of snow is accumulated.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
April, July and August, with an average relative humidity of 77%, are the least humid months in Cossonay.
June through September are months without snowfall.
With an average of 15h and 48min of daylight, June has the longest days of the year in Cossonay.
June and July, with an average maximum UV index of 5, are months with the highest UV index.
The warmest period in Cossonay, Switzerland, is July, when temperatures fluctuate between an average high of 22.2°C (72°F) and a low of 12.6°C (54.7°F).
July and August, with an average of 10.7h of sunshine, are months with the most sunshine in Cossonay, Switzerland.
The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 38mm (1.5") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, 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 month with the most rainfall in Cossonay, Switzerland. Rain falls for 13.8 days and accumulates 103mm (4.06") of precipitation.
The month with the most snowfall in Cossonay is December, when snow falls for 8 days and typically aggregates up to 184mm (7.24") of snow.
The month with the shortest days is December, with an average of 8h and 36min of daylight.
December has the least sunshine of the year in Cossonay, Switzerland, with an average of 5.7h of sunshine.
Average temperature
Cossonay, Switzerland
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is January (3.3°C).
The month with the highest average low temperature is July (12.6°C).
The coldest months (with the lowest average low temperature) are January and February (-2.2°C).
Average pressure
Cossonay, Switzerland
- Average pressure in January:
1019.6mbar - Average pressure in February:
1017.7mbar - Average pressure in March:
1017mbar - Average pressure in April:
1015.5mbar - Average pressure in May:
1016.2mbar - Average pressure in June:
1016.5mbar
- Average pressure in July:
1017.1mbar - Average pressure in August:
1017.8mbar - Average pressure in September:
1018.5mbar - Average pressure in October:
1018.4mbar - Average pressure in November:
1015.9mbar - Average pressure in December:
1021.1mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed
Cossonay, Switzerland
- Average wind speed in January:
11.6km/h - Average wind speed in February:
12.1km/h - Average wind speed in March:
11.6km/h - Average wind speed in April:
9.5km/h - Average wind speed in May:
9.8km/h - Average wind speed in June:
8.5km/h
- Average wind speed in July:
7.5km/h - Average wind speed in August:
7km/h - Average wind speed in September:
8.4km/h - Average wind speed in October:
8.7km/h - Average wind speed in November:
10.4km/h - Average wind speed in December:
11.7km/h
The windiest month (with the highest average wind speed) is February (12.1km/h).
The calmest month (with the lowest average wind speed) is August (7km/h).
Average humidity
Cossonay, Switzerland
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall
Cossonay, Switzerland
The wettest month (with the highest rainfall) is December (103mm).
The driest month (with the least rainfall) is September (38mm).
Average rainfall days
Cossonay, Switzerland
- Average rainfall days in January:
14.3 days - Average rainfall days in February:
11.8 days - Average rainfall days in March:
14.5 days - Average rainfall days in April:
17.3 days - Average rainfall days in May:
20 days - Average rainfall days in June:
19.9 days
- Average rainfall days in July:
19 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
12.9 days - Average rainfall days in December:
13.8 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (11.8 days).
Average snowfall
Cossonay, Switzerland
The month with the highest snowfall is December (184mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Cossonay, Switzerland
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
9.2 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
1 days - Average snowfall days in May:
0.3 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:
0.1 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
4.4 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Cossonay, Switzerland
- Average daylight in January:
9h and 6min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 48min
- Average daylight in July:
15h and 24min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 24min - Average daylight in December:
8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
5h and 48min - Average sunshine in February:
6h and 30min - Average sunshine in March:
7h and 42min - Average sunshine in April:
9h and 36min - Average sunshine in May:
10h and 0min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 6min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
Cossonay, Switzerland
- Average sunshine days in January:
12.4 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
11.9 days - Average sunshine days in April:
9.5 days - Average sunshine days in May:
8 days - Average sunshine days in June:
6.7 days
- Average sunshine days in July:
8.1 days - Average sunshine days in August:
9.2 days - Average sunshine days in September:
13.9 days - Average sunshine days in October:
16 days - Average sunshine days in November:
12.5 days - Average sunshine days in December:
13 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is June (6.7 days).
Average UV index
Cossonay, Switzerland
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Cossonay, Switzerland
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Cossonay, Switzerland
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).
