New Castle County (Newark)
August
Weather in New Castle County, Delaware for August 2025
Your guide to New Castle County weather in August - trends and predictions
Rip Current Statement - See hour by hour.
The forecast for the next days in New Castle County predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in New Castle County at the beginning of August is 29.3 °F. As the month progressed, temperatures tended to remain steady, reaching an average of 29.3 °F by the end of August.
The climate of New Castle County in August is notably wet, with an average of 14 rainy days, and a total of 177.1 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
More
17
Dry days
14
Rainy days
0
Snow days
27°/18°
Temperatures
16 km/h
Avg max wind
71 %
Avg humidity
New Castle County Weather August
Move between months or click on a day
Temperatures trend during August in New Castle County
See the weather trend as well as the moving average line
August weather in New Castle County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Overcast | 25° /19° | 0 mm | 0.8 | |
| Aug. 2 |  Partly cloudy | 26° /18° | 0 mm | 2.2 | |
| Aug. 3 |  Sunny | 31° /16° | 0 mm | 2 | |
| Aug. 4 | Sunny | 33° /17° | 0 mm | 1.9 | |
| Aug. 5 | Sunny | 31° /18° | 0 mm | 0.1 | |
| Aug. 6 | Sunny | 30° /18° | 0 mm | 6 | |
| Aug. 7 | Partly cloudy | 29° /21° | 0 mm | 6 | |
| Aug. 8 |  Patchy rain possible | 29° /20° | 0.1 mm | 5 | |
| Aug. 9 | Sunny | 32° /20° | 0 mm | 7 | |
| Aug. 10 | Patchy rain possible | 32° /22° | 1 mm | 6 | |
| Aug. 11 |  Moderate rain | 32° /21° | 8.9 mm | 6 | |
| Aug. 12 | Partly cloudy | 29° /20° | 0 mm | 6 | |
| Aug. 13 | Sunny | 26° /16° | 0 mm | 6 | |
| Aug. 14 | Sunny | 30° /17° | 0 mm | 6 | |
| Aug. 15 | Sunny | 29° /18° | 0 mm | 7 | |
| Aug. 16 |  Cloudy | 29° /18° | 0 mm | 6 | |
| Aug. 17 | Light rain shower | 26° /20° | 4.1 mm | 6 | |
| Aug. 18 |  Moderate or heavy rain shower | 27° /19° | 18.1 mm | 6 | |
| Aug. 19 | Light rain shower | 26° /16° | 3.5 mm | 6 | |
| Aug. 20 | Partly cloudy | 21° /12° | 0 mm | 6 | |
| Aug. 21 | Partly cloudy | 21° /10° | 0 mm | 6 | |
| Aug. 22 | Partly cloudy | 24° /12° | 0 mm | 6 | |
| Aug. 23 | Sunny | 26° /14° | 0 mm | 7 | |
| Aug. 24 | Partly cloudy | 26° /16° | 0 mm | 7 | |
| Aug. 25 | Partly cloudy | 28° /16° | 0 mm | 7 | |
| Aug. 26 | Patchy rain possible | 29° /18° | 0.3 mm | 6 | |
| Aug. 27 | Partly cloudy | 31° /19° | 0 mm | 8 | |
| Aug. 28 | Sunny | 35° /20° | 1.1 mm | 9 | |
| Aug. 29 |  Fog | 26° /18° | 11 mm | 6 | |
| Aug. 30 | Light rain shower | 29° /18° | 5 mm | 7 | |
| Aug. 31 | Overcast | 27° /17° | 1 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for New Castle County in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the New Castle County forecast closer to your planned date for the most up-to-date weather information.
Change Month
New Castle County in August - FAQ
What are the expected maximum and minimum temperatures in New Castle County during August?
During August, expect a variety of temperatures with highs around 27° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in New Castle County during August?
Significant rainfall exceeding 177.1 mm is expected in New Castle County during August, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in New Castle County during August?
The average wind speed in New Castle County during August is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in New Castle County
Explore the daily rainfall trends and prepare for New Castle Countys August weather 💧
UV exposure in New Castle County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Top locations in New Castle County
Select a location for an accurate weather forecast
More Locations Quick links
More New Castle County weather pages
You are here
Where is New Castle County?Get accurate weather forecasts for New Castle County, located at latitude 39.684 and longitude -75.75. Stay updated with localized weather information tailored for New Castle County.
Found a mistake?
We appreciate your attention to details. Tell us here.