Climate and monthly weather forecastNassau, DE
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Nassau, Delaware, with an average temperature varying between 32°F (0°C) and 41.2°F (5.1°C). In Nassau, the lowest average temperatures are observed in January, with a high of 41.2°F (5.1°C) and a low of 32°F (0°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Nassau, Delaware, with temperature in the range of an average high of 42.6°F (5.9°C) and an average low of 34.2°F (1.2°C). During February, Nassau observes a subtle ascent to a still icy 42.6°F (5.9°C) from January's 41.2°F (5.1°C) in the average high-temperature. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Nassau, Delaware, with an average temperature ranging between max 47.8°F (8.8°C) and min 39.6°F (4.2°C). March's advent notes a subtle adjustment in average high-temperature to a chilly 47.8°F (8.8°C) from February. Weather in March »Weather in April
April in Nassau, Delaware, is a moderate spring month, with an average temperature fluctuating between 57.6°F (14.2°C) and 48.6°F (9.2°C). With the onset of April, Nassau's average high-temperature experiences a rise, moving from March's frosty 47.8°F (8.8°C) to a moderate 57.6°F (14.2°C). Weather in April »Weather in May
May, the last month of the spring in Nassau, is a refreshing month, with an average temperature fluctuating between 66.4°F (19.1°C) and 58.1°F (14.5°C). May brings a slight elevation in the average high-temperature, transitioning from April's mild 57.6°F (14.2°C) to an enjoyable 66.4°F (19.1°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Nassau, Delaware, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 67.6°F (19.8°C). June's arrival signals an increase in average high-temperatures, moving from May's comfortable 66.4°F (19.1°C) to a warm 75.4°F (24.1°C). Weather in June »Weather in July
July, like June, in Nassau, Delaware, is a moderately hot summer month, with an average temperature varying between 73°F (22.8°C) and 80.6°F (27°C). July temperatures tend to peak at an average high of 80.6°F (27°C) and dip to a low of 73°F (22.8°C). The heat index value for July is appraised at a hot 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Nassau, is also a moderately hot month, with an average temperature varying between 79.5°F (26.4°C) and 72.1°F (22.3°C). Nassau measures an average high-temperature of a still warm 79.5°F (26.4°C) in August, nearly consistent with the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Nassau, Delaware, with an average temperature varying between 67.3°F (19.6°C) and 74.1°F (23.4°C). A mild drop in Nassau's average high-temperature is observed in September, transitioning from a warm 79.5°F (26.4°C) in August to a still moderately hot 74.1°F (23.4°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Nassau, Delaware, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 57.9°F (14.4°C). The arrival of October corresponds with a light shift in temperature, down from a moderately hot 74.1°F (23.4°C) in September to a comfortable 65.3°F (18.5°C). Weather in October »Weather in November
November, the last month of the autumn in Nassau, is another cool month, with an average temperature ranging between max 54.5°F (12.5°C) and min 46.4°F (8°C). Observing a mild shift, the average high-temperature during November reduces from October's comfortable 65.3°F (18.5°C) to a fresh 54.5°F (12.5°C). Weather in November »Weather in December
December, the first month of the winter in Nassau, is still a chilly month, with temperature in the range of an average low of 39.2°F (4°C) and an average high of 46.9°F (8.3°C). The shift from November to December includes a small decrease in the average high-temperature, from a fresh 54.5°F (12.5°C) to a frosty 46.9°F (8.3°C). Weather in December »Updated: Feb 10, 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
Nassau's January weather, with an average high temperature of 41.2°F (5.1°C) and an average low temperature of 32°F (0°C), tends to be the coldest of the year.
January is the month with the least rainfall in Nassau. Rain falls for 9.6 days and accumulates 2.2" (56mm) of precipitation.
In Nassau, Delaware, during the entire year, the rain falls for 173.6 days and collects up to 36.97" (939mm) of precipitation.
January through March, November and December are months with snowfall.
The month with the most snowfall is January, when snow falls for 3.7 days and typically aggregates up to 0.98" (25mm) of snow.
Throughout the year, there are 10.1 snowfall days, and 3.39" (86mm) of snow is accumulated.
The months with the lowest UV index in Nassau are January and December, with an average maximum UV index of 2.
The month with the least sunshine is February, with an average of 5h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Nassau, Delaware, 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.
April through October are months without snowfall in Nassau, Delaware.
The most humid month in Nassau, Delaware, is May, with an average relative humidity of 81%.
May through August, with an average maximum UV index of 6, are months with the highest UV index in Nassau.
The month with the longest days is June, with an average of 14h and 48min of daylight.
During the warmest month in Nassau, July, temperatures average a high of 80.6°F (27°C) and a low of 73°F (22.8°C).
July has the most sunshine of the year, with an average of 11h of sunshine.
August is the month with the most rainfall. Rain falls for 18.2 days and accumulates 4.13" (105mm) of precipitation.
The least humid month in Nassau, Delaware, is November, with an average relative humidity of 73%.
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Nassau, DE
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (41.2°F).
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure
Nassau, 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:
30"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:
30.02"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
Nassau, DE
- Average wind speed in January:
12.5mph - Average wind speed in February:
12.2mph - Average wind speed in March:
12.1mph - Average wind speed in April:
11.9mph - Average wind speed in May:
10.2mph - Average wind speed in June:
9.3mph
- Average wind speed in July:
8.4mph - Average wind speed in August:
8.3mph - Average wind speed in September:
9.9mph - Average wind speed in October:
11.7mph - Average wind speed in November:
12.1mph - Average wind speed in December:
11.9mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity
Nassau, DE
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall
Nassau, DE
- Average rainfall in January:
2.2" - Average rainfall in February:
2.6" - Average rainfall in March:
2.99" - Average rainfall in April:
2.56" - Average rainfall in May:
3.35" - Average rainfall in June:
3.43"
- Average rainfall in July:
3.78" - Average rainfall in August:
4.13" - Average rainfall in September:
2.68" - Average rainfall in October:
3.5" - Average rainfall in November:
2.68" - Average rainfall in December:
3.07"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days
Nassau, DE
- Average rainfall days in January:
9.6 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
15.1 days - Average rainfall days in April:
15.6 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
18.6 days - Average rainfall days in August:
18.2 days - Average rainfall days in September:
14.8 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
9.9 days - Average rainfall days in December:
11.9 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.6 days).
Average snowfall
Nassau, DE
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Nassau, DE
- Average snowfall days in January:
3.7 days - Average snowfall days in February:
3.2 days - Average snowfall days in March:
1.6 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:
0.4 days - Average snowfall days in December:
1.2 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Nassau, DE
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 30min - Average sunshine in February:
5h - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
11h - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 36min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 12min
The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 5h).
Average sunshine days
Nassau, DE
- Average sunshine days in January:
17.1 days - Average sunshine days in February:
13.4 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
10.2 days - Average sunshine days in August:
10 days - Average sunshine days in September:
12.2 days - Average sunshine days in October:
15.1 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
16.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (9.8 days).
Average UV index
Nassau, 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
Nassau, DE
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility
Nassau, 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).
