July weather forecastGrayssas, France
July
Weather in July
July, like June, in Grayssas, France, is another warm summer month, with an average temperature ranging between min 15.8°C (60.4°F) and max 27.8°C (82°F).Temperature
Grayssas's weather shows a minor temperature rise with the arrival of July, moving from a moderately hot 24.8°C (76.6°F) in June to a still warm 27.8°C (82°F). A notable decrease from the day's highest temperature marks July, culminating in an average low of 15.8°C (60.4°F).Heat index
July's mean heat index is computed to be a tropical 30°C (86°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
In Grayssas, the average relative humidity in July is 69%.Rainfall
In Grayssas, in July, it is raining for 13.4 days, with typically 29mm (1.14") of accumulated precipitation. Throughout the year, in Grayssas, there are 168.6 rainfall days, and 505mm (19.88") of precipitation is accumulated.Snowfall
April through November are months without snowfall in Grayssas.Daylight
In July, the average length of the day is 15h and 7min.On the first day of July in Grayssas, sunrise is at 06:17 and sunset at 21:43. On the last day of the month, sunrise is at 06:43 and sunset at 21:22 CEST.
Sunshine
July has the most sunshine of the year, with an average of 10.1h of sunshine.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 during July translates into the following guidance:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Grayssas, France
- Average high temperature in July: 27.8°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in July: 15.8°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (2.8°C).
Average pressure in July
Grayssas, France
- Average pressure in July: 1017.6mbar
The month with the highest atmospheric pressure is December (1021.6mbar).
The months with the lowest atmospheric pressure are April and November (1015.6mbar).
Average wind speed in July
Grayssas, France
- Average wind speed in July: 8.7km/h
The windiest month (with the highest average wind speed) is March (11.9km/h).
The calmest months (with the lowest average wind speed) are August and September (8.5km/h).
Average humidity in July
Grayssas, France
- Average humidity in July: 69%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (66%).
Average rainfall in July
Grayssas, France
- Average rainfall in July: 29mm
The wettest months (with the highest rainfall) are May and November (59mm).
The driest month (with the least rainfall) is September (20mm).
Average rainfall days in July
Grayssas, France
- Average rainfall days in July: 13.4 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is September (10 days).
Average snowfall in July
Grayssas, France
- Average snowfall in July: 0mm
The month with the highest snowfall is January (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in July
Grayssas, France
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Grayssas, France
- Average daylight in July: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in July: 10h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in July
Grayssas, France
- Average sunshine days in July: 14.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in July
Grayssas, France
- Average UV index in July: 6
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in July
Grayssas, France
- Average cloud cover in July: 31
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in July
Grayssas, France
- Average visibility in July: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
