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Contents
- The climate of Dover
- The best time to visit Dover
- The worst time to visit Dover
- Spring weather in Dover
- Summer weather in Dover
- Autumn weather in Dover
- Winter weather in Dover
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The public Archives building in Dover, Delaware, between two large trees
The climate of Dover
Dover, situated in Delaware, USA, adheres predominantly to a Humid subtropical climate with no dry season, as per the Köppen climate classification. The weather patterns for this area are distinctive mainly because of its geographical position, with no month being dry throughout the year.
Throughout the year, the city of Dover experiences a wide range of temperature variations, with highest recorded temperatures peaking at 84.2°F (29°C) during the summer months and dipping to a chilly 28.8°F (-1.8°C) during the winter. Coupled with this, the climate here also sees fluctuations in relative humidity levels from 74% to as high as 79%, maintaining a relatively high moisture level in the atmosphere all around the year.
Rainfall also varies throughout the year, reaching a maximum of 3.15" (80mm) during the late summer months, while gradually decreasing to as low as 1.46" (37mm) in the cooler months. Interestingly, the city boasts an average of almost 15 days of rain each month, with these numbers peaking around the midst of summer.
Noticeably, Dover also experiences a mild snowfall during the colder months. Typically, snowfall is prevalent during late winter and early spring, showing the diverse patterns of weather this city offers.
Throughout the year, the city of Dover experiences a wide range of temperature variations, with highest recorded temperatures peaking at 84.2°F (29°C) during the summer months and dipping to a chilly 28.8°F (-1.8°C) during the winter. Coupled with this, the climate here also sees fluctuations in relative humidity levels from 74% to as high as 79%, maintaining a relatively high moisture level in the atmosphere all around the year.
Rainfall also varies throughout the year, reaching a maximum of 3.15" (80mm) during the late summer months, while gradually decreasing to as low as 1.46" (37mm) in the cooler months. Interestingly, the city boasts an average of almost 15 days of rain each month, with these numbers peaking around the midst of summer.
Noticeably, Dover also experiences a mild snowfall during the colder months. Typically, snowfall is prevalent during late winter and early spring, showing the diverse patterns of weather this city offers.
The best time to visit Dover
Statistically, the months between June and September prove to be the warmest period in Dover, with temperatures soaring up to a balmy 78.8°F (26°C) to 84.2°F (29°C). This is complemented by the lowest wind speeds of the year, averaging between 6.4mph (10.3km/h) and 7.6mph (12.2km/h). Consequently, it is during these months that the city experiences highest daylight hours, rising to a maximum of 14.9 hours per day.
The summer period is also characterized by high rainfall, making the city lush and green. While it does ensure higher humidity, it also drives a vibrant ecosystem, making this period an excellent time to explore Dover's natural beauty.
The summer period is also characterized by high rainfall, making the city lush and green. While it does ensure higher humidity, it also drives a vibrant ecosystem, making this period an excellent time to explore Dover's natural beauty.
The worst time to visit Dover
The months from December to February are particularly harsh in Dover. During this period, temperatures often plunge to a low of 28.8°F (-1.8°C), making outdoor activities less appealing. Moreover, high wind speeds (around 10mph (16.1km/h)) prevail during these months, adding to the chill factor.
Snowfall is also a weather factor during the winter season, although it is usually mild (up to 1.65" (42mm)). Still, it contributes to the overall cold and could cause travel and leisure disruptions.
Snowfall is also a weather factor during the winter season, although it is usually mild (up to 1.65" (42mm)). Still, it contributes to the overall cold and could cause travel and leisure disruptions.
Spring weather in Dover
During spring, from March to May, Dover experiences rising temperatures, with heights reaching 70.7°F (21.5°C) and lows barely touching 37°F (2.8°C). It's a transitional period when rainfall remains fairly consistent at approximately 2" (51mm) per month, while humidity hovers about 74%. In general, weather conditions during spring are unpredictable, but mild, providing a variety of opportunities for outdoor engagement.
Summer weather in Dover
Dover's summer is the warmest period of the year, witnessing temperatures that fluctuate between a comfortable 64.9°F (18.3°C) and a high of 84.2°F (29°C) during the peak months of June to August. Despite the rise in ambient temperature, the number of daylight hours increases significantly to a max of about 14.9 hours a day, allowing ample time and opportunity for outdoor activities and exploration.
Autumn weather in Dover
Autumn months in Dover, from September to November, see a gradual drop in temperature from 76.3°F (24.6°C) down to 54.3°F (12.4°C). Rainfall decreases a bit to around 2" (51mm) but the number of rainy days remains relatively high, floating around 11 to 13 days in a month. Simultaneously, wind speed gradually rises and daylight hours begin to shorten, setting the tone for the approaching winter.
Winter weather in Dover
Winter in Dover manages to bring forth a different character of the city. The months from December to February see plummeting temperatures, as low as 28.8°F (-1.8°C) with a maximum reaching up to 46.2°F (7.9°C). Cloud cover percentage increases significantly, bringing with it the possibility of snowfall in late winter. Sunshine hours decrease to as few as 5.2 hours, and wind speeds cap at around 10mph (16.1km/h), making it significantly colder.
Weather in January
The starting month of the year brings damp conditions to Dover, Delaware, with a maximum snowfall of 1.65" (42mm). As air temperatures fluctuate from lows of 28.8°F (-1.8°C) to highs of 39.7°F (4.3°C), it's easy to notice a blend of winter chill and humidity in the city. Weather in January »
Weather in February
With temperature lows intensifying just slightly from January to 31.1°F (-0.5°C) and the highs maintaining the low 40s°F, February extends the cold reality of winter in Dover. The actual snow quantity recedes to a mere 0.91" (23mm), reducing the winter wonderland effect somewhat. Weather in February »
Weather in March
A significant change in the climate appears in March as winter slowly gives way to spring. The warm-up results in temperature highs reaching 49.6°F (9.8°C), a stark contrast to the brisk air from previous months. Rainfall is slightly more frequent, as shown by the increase in rainfall days from 9.9 to 12.8. Weather in March »
Weather in April
April sees a striking contrast in Dover's weather, showcasing what spring can truly display in the city. With temperature highs soaring to a pleasant 61°F (16.1°C), this mild warmth is a welcome change from the winter chill. April also records a steady drop in snowfall, with no evidence of snow on the horizon. Weather in April »
Weather in May
May inaugurates the arrival of summer with an increase in temperature, climbing to highs of 70.7°F (21.5°C). As the heat intensifies, so does the humidity, reaching a relative average of 79%. There's no sign of snow in May as summer predators snowfall trends. Weather in May »
Weather in June
June is often revered as the gateway to the hottest part of the year in Dover, with temperature highs spiking to 78.8°F (26°C). The cloud coverage, however, recedes significantly to 32%, allowing the sun to further heat the city. Weather in June »
Weather in July
A highlight of July is the soaring temperature, reaching a peak of 84.2°F (29°C) for the year in Dover, Delaware, which is the highest average high temperature of the year. It's a humid month, as anticipated, with relative humidity at 78%. Weather in July »
Weather in August
August sustains the summer's fervent heat, albeit with a temperature decrease to a high of 81.9°F (27.7°C). The frequency of rainfall days remains at 15.6, contributing to a monthly average rainfall of 3.15" (80mm). As a result, this month is considered to be the year's wettest. Weather in August »
Weather in September
September signals the beginning of autumn, with the weather starting to cool down significantly from the summer high, reaching 76.3°F (24.6°C). Coupled with a decline in daily sunshine hours to 9.2, this shift indicates the changing seasons. Weather in September »
Weather in October
October brings forth a substantial drop in temperature, with average highs dipping to 65.3°F (18.5°C). Although still relatively humid at 77%, the city experiences increased wind speed at 8.8mph (14.2km/h), offering a pleasant, crisp fall climate. Weather in October »
Weather in November
November is a marker of the impending winter season, with a notable temperature plunge to 54.3°F (12.4°C). This month brings significantly less rainfall, registering 1.77" (45mm) on average, and fewer rainfall days at 8.1. Despite the cloud cover being at 35%, daily sunshine hours stay almost constant at 5.8. Weather in November »
Weather in December
By December, Dover, Delaware, fully embraces the winter season, with temperatures settling between lows of 35.6°F (2°C) and highs of 46.2°F (7.9°C). This colder period is coupled with a slight increase in snowfall at 0.51" (13mm) and days of snowfall totaling 1.7 for the month. Weather in December »
Updated: Aug 1, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
January, having an average high-temperature of 39.7°F (4.3°C) and an average low-temperature of 28.8°F (-1.8°C), is the coldest month.
What is the least humid month?
January, March, April and November, with an average relative humidity of 74%, are the least humid months in Dover.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 8.2 days and typically collects 1.46" (37mm) of precipitation.
How many days does it rain?
In Dover, during the entire year, the rain falls for 152.3 days and collects up to 26.3" (668mm) of precipitation.
When does it snow?
Months with snowfall are January through March and December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 3.5 days and accumulates 1.65" (42mm) of snow.
How much does it snow in Dover?
In Dover, during the entire year, snow falls for 10.1 days and aggregates up to 4.61" (117mm) of snow.
What is the month with the lowest UV index in Dover?
The months with the lowest UV index are January and December, with an average maximum UV index of 2.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 5h of sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow?
In Dover, snow does not fall in April through November.
What is the most humid month?
With an average relative humidity of 79%, May is the most humid month.
When is the highest UV index in Dover?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days in Dover?
The month with the longest days is June, with an average of 14h and 54min of daylight.
What is the warmest month?
July, with an average high of 84.2°F (29°C) and a low of 70°F (21.1°C), signifies the warmest month of the year.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.8h of sunshine.
What is the rainiest month?
August is the month with the most rainfall in Dover. Rain falls for 15.6 days and accumulates 3.15" (80mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Dover, DE
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39.7°F).
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure
Dover, DE
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Dover, DE
- Average wind speed in January:
9.9mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Dover, DE
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall
Dover, DE
- Average rainfall in January:
1.46" - Average rainfall in February:
1.89" - Average rainfall in March:
2.13" - Average rainfall in April:
1.77" - Average rainfall in May:
2.4" - Average rainfall in June:
2.64"
- Average rainfall in July:
2.91" - Average rainfall in August:
3.15" - Average rainfall in September:
1.89" - Average rainfall in October:
2.2" - Average rainfall in November:
1.77" - Average rainfall in December:
2.09"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days
Dover, DE
- Average rainfall days in January:
8.2 days - Average rainfall days in February:
9.9 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
15.6 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
15.6 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.1 days).
Average snowfall
Dover, DE
The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Dover, DE
- Average snowfall days in January:
3.5 days - Average snowfall days in February:
3.1 days - Average snowfall days in March:
1.8 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
1.7 days
The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Dover, DE
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days
Dover, DE
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
15.4 days - Average sunshine days in April:
14.4 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
12.6 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index
Dover, DE
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Dover, DE
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Dover, DE
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).
Dover, Delaware, USA
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