Average July Weather in Delaware

Typical temperatures, precipitation, humidity and sunshine during July at cities and towns throughout Delaware are listed below.

Temperatures in Delaware for July

This table gives the averages in degrees Fahrenheit and Celsius for maximum and minimum monthly temperatures. These normal temperatures are based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

Average July temperatures
High °F Low °F Place High °C Low °C
87 69 Dover 31 21
88 70 Georgetown 31 21
87 67 Greenwood 30 19
88 71 Lewes 31 21
89 66 Newark 31 19
87 68 Wilmington 30 20

Precipitation in Delaware for July

Here are the July averages for rainfall in Delaware. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation, based on the weather during 1991 to 2020. The calculation of days only includes those when precipitation totalled 0.01 inches (0.25 millimetres) or more.

Average precipitation in July
Days Place Inches Milli­metres
9 Dover 4.1 105
11 Georgetown 4.1 105
9 Greenwood 4.0 102
10 Lewes 5.0 126
9 Newark 4.8 123
10 Wilmington 4.4 112

Sunshine in Delaware for July

In the table below, the average number of Sunny Days in Delaware is the total days this month when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours.

Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime. The rest of the days during July are mainly overcast, with at least 80% cloud cover. Total Days With Sun is a sum of the Sunny plus Partly Sunny days. These numbers are averages of most the years the weather station has operated.

Days of sunshine in July
City Sunny Partly Sunny Total Days
With Sun
Wilmington 8 11 19

Humidity in Delaware

In the table below, the Daily number is the average of relative humidity readings taken every three hours throughout the day. Morning percentages are for 7 am and Afternoon levels are for 4 pm local standard time. All the humidity numbers are averages for the years 1961 to 1990.

Average July humidity (%)
Daily City Morning Afternoon
70 Wilmington 79 54
References

National Climatic Data Center. Comparative Climatic Data.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

World Data Center for Meteorology. Climate of the World.

More Delaware Weather Information

Delaware Weather
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