Dover receives its highest rainfall in Jul, while humidity peaks during winter months.
🌧️ Wettest:Jul — 113 mm☀️ Driest:Feb — 75 mm
💧 Humidity peaks at 83% in Jan · annual avg 78%
🌍 Climate Summary
Avg Annual Temp:56.7°F
Avg Annual Rainfall:1126 mm
Avg Humidity:78%
Data Period:1981 – 2025
Dover Climate Overview
Dover has a warm temperate climate with warm summers and freezing winters.
Temperatures peak in Jul and drop to their lowest in Jan,
while rainfall is highest during summer months.
Humidity remains high throughout the year, especially during winter months, creating cold and damp conditions.
📈 Yearly Trends
The warmest year in Dover's recorded history was 2024
(avg: 60.3°F),
while the coldest year was 1996
(avg: 53.1°F),
based on annual average temperatures.
📊 Key Climate Trends
🌡️ Dover's temperature shows a slight warming trend over the past decade
📈 Minimum temperatures show a slight warming trend in recent years
🌧️ Rainfall has decreased in recent years compared to earlier periods
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °F
Dover's temperatures shows a slight warming trend over the past decade.
The highest recorded temperature reached
102.5°F in Jul 2012,
while the lowest dropped to
-5.5°F in Jan 1984.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Dover shows noticeable variation. Rainfall has decreased in recent years compared to earlier periods.
Based on 45 years of data (1981–2025), Jul is typically the hottest month in Dover, Delaware, with average high temperatures around 95.1°F.
What is the coldest month in Dover?▼
Jan is the coldest month in Dover, with average low temperatures around 11.5°F.
What is the rainiest month in Dover?▼
Jul receives the most rainfall with approximately 113 mm, while Feb is the driest with 75 mm.
What was the highest temperature ever recorded in Dover?▼
The highest recorded temperature was 102.5°F in Jul 2012. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Dover?▼
The lowest recorded temperature was -5.5°F in Jan 1984.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Dover get?▼
Dover receives the most sunlight in Jun with an average solar radiation of 6.14 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in Delaware.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.