Climate and monthly weather forecast
Smyrna, DE

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The climate of Smyrna

Nestled in the state of Delaware, USA, Smyrna experiences a Humid subtropical climate. This climatic condition is often classified under Köppen's Cfa category, indicating that the location does not go through a dry season. Throughout the year, Smyrna experiences considerable variations in temperature, rainfall, and humidity levels, contributing to its seasonal weather patterns.

On average, temperatures in Smyrna range from 27.9°F (-2.3°C) in the colder months to 84.4°F (29.1°C) in the warmest months. Maximum temperatures tends to peak in July at 84.4°F (29.1°C) and dip to their lowest in January at 27.9°F (-2.3°C). Simultaneously, relative humidity remains fairly constant throughout the year, ranging between 73% and 79%.

Rainfall in Smyrna varies from 2.13" (54mm) to 3.86" (98mm) each month. Maximum rainfall tends to occur in August, while February experiences the least rainfall. Regarding snowfall, it is primarily of winter's domain, with values peaking in March at 2.6" (66mm), while summer months go without any snow.

Smyrna receives about 5.3 hours to 10.7 hours of sunshine per day throughout the year. The sunniest month tends to be July with 10.7 hours of sunshine, while January sees the shortest days with 5.3 hours of sunshine. The average wind speed in Smyrna typically fluctuates between 6.1mph (9.8km/h) and 9.5mph (15.3km/h).

The best time to visit Smyrna

While the choice of visiting Smyrna depends largely on individual preferences, the months from May to September offer the most favorable conditions. During these months, temperatures range from 62.2°F (16.8°C) to 84.4°F (29.1°C), creating an ideal environment for outdoor activities. The city also experiences relatively low humidity levels during the summer, thereby enhacing visitor comfort. Smyrna bathes in the longest daylight during these months, with up to 14.9 hours in June providing ample time for sightseeing and exploration.

The worst time to visit Smyrna

Visiting Smyrna in the colder months from November to February may not be quite as pleasant. During this period, temperatures fall to between 27.9°F (-2.3°C) and 50.2°F (10.1°C), which may impact outdoor activities. In addition, rainfall and snowfall increase during this period, which coupled with the low temperatures, could potentially disrupt travel plans.

Spring weather in Smyrna

At Smyrna, spring spans from March to May, witnessing steady increase in daily temperatures. March begins with an average low temperature of 36.7°F (2.6°C) and reaches a high of 50.2°F (10.1°C), while May sees a significant climb with temperatures fluctuating between 55.9°F (13.3°C) and 71.2°F (21.8°C). The total monthly rainfall in spring ranges from 2.64" (67mm) to 3.07" (78mm). Despite the rainfall, spring ushers in longer days, with sunshine hours progressively increasing from 6.7 hours in March to 8.9 hours by May.

Summer weather in Smyrna

Summer in Smyrna lasts from June through August, with temperatures reaching their peak. The average high temperature in summer hovers around 82.4°F (28°C), with a low near 64°F (17.8°C). Relative humidity dips slightly during the summer months, providing respite from any oppressive heat. Sunshine at its maximum during these months, with daylight stretching to 14.9 hours in June.

Autumn weather in Smyrna

Autumn arrives in Smyrna in September and lasts until November. This period witnesses a gradual decline in temperature. September hosts a high of 76.6°F (24.8°C) and a low of 61.9°F (16.6°C), which is further decreased to 54°F (12.2°C) and 41.2°F (5.1°C) by November. Rainfall lies between 2.28" (58mm) to 2.87" (73mm) during the autumn months, and daylight hrs steadily decrease from September's 12.4 hours to November's 10 hours.

Winter weather in Smyrna

During winter in Smyrna, from December to February, temperatures can drop as low as 27.9°F (-2.3°C). The average high temperature in winter stays around 45.9°F (7.7°C). These months are characterized by increased precipitation, with average monthly rainfall reaching its apex at 3.43" (87mm) in December. Snowfall is common during winter, with a maximum of 2.09" (53mm) recorded in December. Despite the cold, sunshine hours are balanced between 5.2 hours to 5.3 hours during the winter months, with longer nights dominant in this season.

Weather in January

Smyrna starts the year with a noticeably chilly weather, as is expected during winter. January sees the lowest temperatures of the year, with an average low of 27.9°F (-2.3°C) and a high just barely peaking at 39.2°F (4°C). Weather in January »

Weather in February

Moving into the month of February, Smyrna witnesses a mild elevation in temperatures. The average high and low temperatures increase to 43°F (6.1°C) and 29.8°F (-1.2°C) respectively, signifying the subtle transition towards the spring season. Weather in February »

Weather in March

March ushers in the spring season in Smyrna, along with a substantial spike in temperature reaching an average high of 50.2°F (10.1°C) from 43°F (6.1°C) previously. The change in season also triggers a rise in rainfall from 2.64" (67mm) in February to 2.91" (74mm), indicating wetter weather conditions. Weather in March »

Weather in April

April continues to elevate the temperature further, offering a warmer weather trend. Smyrna experiences a significant jump in average high temperatures, reaching 62.2°F (16.8°C), much warmer compared to the previous month's high of 50.2°F (10.1°C). Weather in April »

Weather in May

May brings sustained warmth and a spike in the relative humidity to 79%, the highest of the year, in addition to longer daylight hours. Average high temperature continues to climb up to 71.2°F (21.8°C), a significant raise considering the gradual increase witnessed in previous months. Weather in May »

Weather in June

June marks the official onset of summer in Smyrna with even longer daylight hours and more sunshine. Prolonged sunshine extends up to 14.9 hours per day, marking it as the month with the longest daylight period in the year. Average high temperature rises further up to 79.3°F (26.3°C). Weather in June »

Weather in July

July signifies the peak of summer in Smyrna with the highest average temperatures of the year. The mercury hits an average high of 84.4°F (29.1°C), this is the hottest month of the year in the region. Despite the heat, rainfall remains high with close to 3.62" (92mm) expected. Weather in July »

Weather in August

August signals the tail end of summer, with temperatures slightly dipping to an average high of 82.4°F (28°C), after the July heat. Cloud cover percentage shows a minimal increase, indicating more overcast skies compared to previous months. Weather in August »

Weather in September

September in Smyrna represents a transition phase from summer to fall with temperatures dipping further from August's readings. A more significant drop in average high temperatures is observed, plunging to 76.6°F (24.8°C). Rainfall decreases considerably from August, and relative humidity drops as well, marking a shift toward the drier fall season. Weather in September »

Weather in October

October brings fall weather in full swing to Smyrna. From a temperature standpoint, there is a noticeable difference from the last month, with average highs dipping to a much cooler 65.5°F (18.6°C). Wind speed begins to pick up, indicating a shift towards winter weather. Weather in October »

Weather in November

November in Smyrna sees a substantial drop in temperature indicating the onset of winter. The average high drops substantially to 54°F (12.2°C) while snowfall witnesses a return, albeit small, after being absent since April. Weather in November »

Weather in December

December in Smyrna brings in the winter chill along with festive vibes. The average high temperature dips to 45.9°F (7.7°C), marking a clear shift to winter. The snowfall increases from the November levels, adding to the festive spirit. Weather in December »

Frequently asked questions

What are the coldest months?

In Smyrna, January is known for its average lowest temperatures, reaching a high of 39.2°F (4°C) and a low of 27.9°F (-2.3°C).

What is the driest month in Smyrna?

The month with the least rainfall is January, when the rain falls for 9.7 days and typically collects 2.13" (54mm) of precipitation.

How much does it rain?

Throughout the year, there are 169.2 rainfall days, and 34.96" (888mm) of precipitation is accumulated.

When does it snow in Smyrna?

January through April, November and December are months with snowfall.

How much does it snow?

In Smyrna, Delaware, during the entire year, snow falls for 14.4 days and aggregates up to 7.44" (189mm) of snow.

What are the months with the lowest UV index?

January and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 5.1h of sunshine.

What is the snowiest month?

March is the month with the most snowfall. Snow falls for 2.8 days and accumulates 2.6" (66mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Smyrna, 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.

What is the least humid month?

April is the least humid month, with an average relative humidity of 73%.

What is the most humid month?

The most humid month is May, with an average relative humidity of 79%.

When it does not snow?

May through October are months without snowfall.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

When are the longest days?

June has the longest days of the year, with an average of 14h and 54min of daylight.

What are the warmest months?

July is the warmest month, exhibiting average temperatures of 84.4°F (29.1°C) at the peak and 69.3°F (20.7°C) at the base.

What month has the most sunshine?

With an average of 10.7h of sunshine, July has the most sunshine of the year in Smyrna.

What is the wettest month in Smyrna?

August is the month with the most rainfall. Rain falls for 16.4 days and accumulates 3.86" (98mm) of precipitation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

Average temperature
Smyrna, DE

Average temperature - Smyrna, DE

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.2°F).

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure
Smyrna, DE

Average pressure - Smyrna, DE

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
Smyrna, DE

Average wind speed - Smyrna, DE

The windiest months (with the highest average wind speed) are February and March (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average rainfall
Smyrna, DE

Average rainfall - Smyrna, DE

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days
Smyrna, DE

Average rainfall days - Smyrna, DE

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.3 days).

Average snowfall
Smyrna, DE

Average snowfall - Smyrna, DE

The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Smyrna, DE

Average snowfall days - Smyrna, DE

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Smyrna, DE

Average daylight / Average sunshine - Smyrna, DE

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).

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days
Smyrna, DE

Average sunshine days - Smyrna, DE

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.5 days).

Average UV index
Smyrna, DE

Average UV index - Smyrna, 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 visibility
Smyrna, DE

Average visibility - Smyrna, 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).

Smyrna, Delaware, USA

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