In Delaware, summers are characterized by long, warm days, while winters bring freezing temperatures, snow, and wind. The weather remains partly cloudy throughout the year. Temperatures typically range from 19°F to 82°F, with rare occurrences below 1°F or above 89°F.

According to the tourism score, the optimal time for warm-weather activities in Delaware is from mid-June to early September.

The warm season in Delaware lasts for about 4.0 months, spanning from May 20 to September 20, with daily high temperatures averaging above 73°F. July is typically the hottest month, with an average high of 82°F and a low of 62°F.

Conversely, the cold season persists for approximately 3.0 months, starting from December 1 to March 3, characterized by daily high temperatures below 44°F. January is considered the coldest month in Delaware, with an average low of 21°F and a high of 35°F.

To depict the fluctuations within each month rather than solely focusing on monthly totals, we present the rainfall accumulated over a sliding 31-day period centered around each day of the year. Delaware exhibits notable seasonal variations in monthly rainfall.

Rainfall is present year-round in Delaware. June stands out as the wettest month, with an average rainfall of 3.4 inches.

Conversely, February experiences the least rainfall in Delaware, with an average of 1.3 inches.

See more: https://weatherusa.app/delaware

Snowfall in Delaware exhibits seasonal variations, similar to rainfall. We track snow accumulation over a sliding 31-day period centered around each day of the year.

The snowy season lasts for approximately 4.5 months, from November 19 to April 4, with at least 1.0 inch of snowfall. February experiences the most snow in Delaware, averaging 3.7 inches.

Conversely, the snowless period extends for about 7.5 months, from April 4 to November 19. On July 15, Delaware typically records the least snowfall, with an average total accumulation of 0.0 inches.