July weather forecastNorwalk, CT
July
Weather in July
July is the warmest month in Norwalk, showcasing typical summer weather and high sun exposures. Temperatures rise significantly from June, topping at 81.1°F (27.3°C) for high temperatures, and 68.2°F (20.1°C) for low temperatures. Evenings are comfortably warm, encouraging night outdoor activities and beach outings. The town buzzes with summer camps, outdoor concerts, and Independence Day celebrations exhibiting full summer excitement in Norwalk.Temperature
The highest temperatures in Norwalk are recorded in July, with averages reaching a high of 81.1°F (27.3°C) and a low of 68.2°F (20.1°C).Heat index
The heat index in July is estimated at a hot 86°F (30°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In Norwalk, Connecticut, the average relative humidity in July is 74%.Rainfall
July is the month with the most rainfall. Rain falls for 18.1 days and accumulates 4.13" (105mm) of precipitation.Snowfall
In Norwalk, Connecticut, snow does not fall in May through October.Ocean temperature
In Norwalk, the average seawater temperature in July is 70.9°F (21.6°C).Note: Most people find swimming in 70.9°F (21.6°C) unenjoyable. As the water temperature falls from 69.8°F (21°C) to 59°F (15°C), controlling one's breathing becomes harder.
Daylight
The average length of the day in July is 14h and 47min.On the first day of the month, sunrise is at 5:25 am and sunset at 8:30 pm. On the last day of July, sunrise is at 5:49 am and sunset at 8:10 pm EDT.
Sunshine
With an average of 10.5h of sunshine, July has the most sunshine of the year.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 during July leads to these advisories:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Norwalk, CT
- Average high temperature in July: 81.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in July: 68.2°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in July
Norwalk, CT
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in July
Norwalk, CT
- Average wind speed in July: 6.5mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in July
Norwalk, CT
- Average humidity in July: 74%
The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are April and November (72%).
Average rainfall in July
Norwalk, CT
- Average rainfall in July: 4.13"
The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.36").
Average rainfall days in July
Norwalk, CT
- Average rainfall days in July: 18.1 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in July
Norwalk, CT
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Norwalk, CT
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in July
Norwalk, CT
- Average sea temperature in July: 70.9°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (39°F).
Average daylight in July /
Average sunshine in July
Norwalk, CT
- Average daylight in July: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in July: 10h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in July
Norwalk, CT
- Average sunshine days in July: 11.3 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in July
Norwalk, CT
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in July
Norwalk, CT
- Average cloud cover in July: 31
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in July
Norwalk, CT
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
