Climate and monthly weather forecastAlexandria, VA
Climate and monthly weather forecast
The climate of Alexandria
Alexandria, Virginia, USA, sits comfortably within the Köppen climate classification denoted Cfa, showing a humid subtropical climate marked by no distinct dry season. The geographical positioning contributes to a riveting blend of weather conditions throughout the year with variations seen in each climatological parameter, inviting diversity in temperature ranges, rainfall, and other aspects.Temperature highs in Alexandria scale from 40.6°F (4.8°C) in January to a rousing 87.8°F (31°C) in July. Conversely, the low temperatures tend to vary, from 27.7°F (-2.4°C) in January to a more tepid 69.1°F (20.6°C) in July. The swing between cooler and warmer conditions extends from winter to summer, delivering a spectrum of temperatures for locals and visitors to enjoy.
Humidity maintains a relatively stable pattern, hovering between 71% in spring months and 76% in May and December. Rainfall estimations show an increase from 2.05" (52mm) in January to a peak of 3.43" (87mm) in August, with a varying number of rainfall days that reach its height in May with 17.7 days. This insight suggests a moist climate with frequent light showers, offering a unique weather pattern for this region.
One noteworthy weather condition in Alexandria is the insignificant snowfall which happens from January to March and then in November, with January seeing the highest snowfall of 2.48" (63mm). Snowfall days are also predominantly in winter, with the highest frequency in January. The annual diversity in weather, humidity, and rainfall indeed makes Alexandria a unique climate host.
The best time to visit Alexandria
Visiting Alexandria prompts attention to the desired weather conditions of the visitor. But, considering the overall weather parameters, late spring and early fall emerge as the ideal seasons. April to June offers pleasant temperatures ranging from 53.2°F (11.8°C) to 82.8°F (28.2°C) along with a moderate rainfall. Similarly, September to October provides moderate temperatures in the range of 55°F (12.8°C) to 78.6°F (25.9°C) with less rainfall compared to other months. This period also showcases lower humidity levels making these months optimal for a visit.The worst time to visit Alexandria
Although Alexandria's weather conditions can be inviting year-round, visitors may want to reconsider a trip during late summer. The weather forecast in July and August, the hottest months, shows high temperatures climbing up to 87.8°F (31°C) and 85.6°F (29.8°C), respectively. While some may enjoy the heat, the combination of high humidity values at 71% and the peak rainfall month in August might make the climate uncomfortably humid and wet for visitors.Spring weather in Alexandria
Spring in Alexandria spans from March to May. Temperatures during this time increase, starting from a mild 53.2°F (11.8°C) in March and peak at 74.7°F (23.7°C) in May. Concurring with the rise in temperature, the average rainfall also shows an increasing trend, starting from 2.44" (62mm) in March to 2.95" (75mm) in May. The frequency of sunshine hours also goes up markedly from March to May, increasing from 6.9 hours to 9 hours.Summer weather in Alexandria
Summer warmth in Alexandria graces the landscape from June to August. June's average high temperatures start off at a comfortable 82.8°F (28.2°C) and rise to 87.8°F (31°C) in July, and then drop a bit to 85.6°F (29.8°C) in August. Interestingly, rainfall decreases during summer after its peak in May, with June and July receiving about 2.6" (66mm) and 2.95" (75mm) of rain, respectively. August, however, sees an increase to 3.43" (87mm).Autumn weather in Alexandria
Autumn extends from September to November in Alexandria, with discernable changes in weather. Temperatures dwindle from 78.6°F (25.9°C) in September to a cooler 55°F (12.8°C) in November. Rainfall also reduces considerably from September's 1.93" (49mm) to November's 2.17" (55mm). Coupled with a decrease in daylight hours from 12.4 hours in September to 10.1 hours in November, autumn ushers in a gradual transition towards the colder winter months.Winter weather in Alexandria
Winter in Alexandria, covering December to February, offers a chillier climate relative to other seasons. The average high temperatures during winter months range down from a high of 46.2°F (7.9°C) in December to a low of 40.6°F (4.8°C) in January. February sees a slight rise in temperature to 45.1°F (7.3°C). In terms of precipitation, the majority falls as rain, with the maximum snowfall of 2.48" (63mm) registered in January. The minimal snowfall and generally mild temperatures make winter in Alexandria relatively comfortable and mild.Weather in January
January in Alexandria is distinctly wintery, marked by the year's coldest temperatures. Compared to December, there is a slight rise in temperatures, though still in the chill range, with average highs reaching 40.6°F (4.8°C) and lows of about 27.7°F (-2.4°C). Weather in January »Weather in February
February weather continues in the winter vein, largely consistent with January's patterns. It does get marginally warmer though, with the mercury inching up to 45.1°F (7.3°C) at its highest and 30.2°F (-1°C) at its lowest. Weather in February »Weather in March
March heralds the arrival of spring in Alexandria, highlighted by a considerable warmth in temperatures from February. With temperatures ranging from 37.4°F (3°C) to 53.2°F (11.8°C), the city experiences a noticeable swing towards milder conditions. Weather in March »Weather in April
April's weather is characterized by continued warming, leaving the brisk cold of March behind. Temperatures vary from 47.3°F (8.5°C) to 65.1°F (18.4°C), effecting a pleasant envelope of spring that bathes the city. Rainfall is more consistent, assisting the full bloom of flowers across Alexandria. Weather in April »Weather in May
May in Alexandria embraces the heart of spring, acting as a threshold to summer. Average temperature highs reach 74.7°F (23.7°C), marking the arrival of more sun-drenched days. The city comes alive with vibrant colors due to consistent rainfall and increased relative humidity, leading to high blossoming. Weather in May »Weather in June
June places Alexandria firmly within the summer season, characterized by long, sunny days and warm nights. There is a significant temperature rise, reaching up to 82.8°F (28.2°C) in the day and falling to 64.2°F (17.9°C) during the night. Weather in June »Weather in July
July is the peak of summer in Alexandria, with temperatures soaring to a year's high of 87.8°F (31°C) and dipping to 69.1°F (20.6°C) at night. The sea temperature also peaks, aligning with increased beach activity and water sports. Weather in July »Weather in August
August maintains the summer trend but with slightly cooler temperatures than July. The upper limit of temperatures softens to 85.6°F (29.8°C), contributing to somewhat milder days. However, humidity levels oscillate, bouncing between moderate and high, leading to occasional sultry weather. Weather in August »Weather in September
September in Alexandria showcases a gentle shift from summer heat to the mild onset of fall. It brings relief with a drop in daily highs to about 78.6°F (25.9°C). Despite a decrease in rainfall, the city sports a lush green look, amplified by the agreeable weather. Weather in September »Weather in October
October is when autumn is in full flow in Alexandria. It's much cooler than September, with temperatures recording a high of 67.1°F (19.5°C) and a low of 51.3°F (10.7°C). The city gets a visual makeover with vibrant foliage and crisp fall air, offering an aesthetic appeal to its landscape. Weather in October »Weather in November
November in Alexandria is undeniably autumnal, ushering in colder temperatures and reduced daylight hours. From October to November, the temperature decreases further, with a high of 55°F (12.8°C) and a low around 39.9°F (4.4°C). Weather in November »Weather in December
December rings in the winter season in Alexandria, marked by a significant cool down from November. The temperature varies from 34°F (1.1°C) to 46.2°F (7.9°C), adding a cold air to the city's festive mood. The shorter days and longer nights complement the Christmas spirit. Weather in December »Updated: Feb 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, recording an average high temperature of 40.6°F (4.8°C) and a low temperature of 27.7°F (-2.4°C), is Alexandria's coldest month.
Throughout the year, in Alexandria, Virginia, there are 158.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
The month with the most snowfall in Alexandria, Virginia, is January, when snow falls for 4.5 days and typically aggregates up to 2.48" (63mm) of snow.
In Alexandria, during the entire year, snow falls for 14.4 days and aggregates up to 7.56" (192mm) of snow.
The months with the lowest UV index are January and December, with an average maximum UV index of 2.
The month with the coldest seawater in Alexandria, Virginia, is February, with an average ocean temperature of 45.1°F (7.3°C).
February has the least sunshine of the year, with an average of 5.1h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Alexandria, 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.
The months with the lowest humidity are April and July, with an average relative humidity of 71%.
May, October and December, with an average relative humidity of 76%, are most humid months.
In Alexandria, Virginia, snow does not fall in May through October.
May through August, with an average maximum UV index of 6, are months with the highest UV index in Alexandria.
The month with the longest days is June, with an average of 14h and 48min of daylight.
July brings the highest temperatures in Alexandria, Virginia, with an average high of 87.8°F (31°C) and an average low of 69.1°F (20.6°C).
With an average of 10.8h of sunshine, July has the most sunshine of the year.
August is the month with the most rainfall in Alexandria, Virginia. Rain falls for 15.9 days and accumulates 3.43" (87mm) of precipitation.
With an average ocean temperature of 78.1°F (25.6°C), August is the month with the warmest seawater.
The month with the least rainfall in Alexandria is September, when the rain falls for 11.9 days and typically collects 1.93" (49mm) of precipitation.
With an average of 9h and 30min of daylight, December has the shortest days of the year in Alexandria, Virginia.
Average temperature
Alexandria, VA
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (40.6°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure
Alexandria, VA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Alexandria, VA
- Average wind speed in January:
7.5mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.8mph - Average wind speed in April:
7.7mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5mph - Average wind speed in September:
5.6mph - Average wind speed in October:
6.6mph - Average wind speed in November:
6.8mph - Average wind speed in December:
6.8mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Alexandria, VA
The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall
Alexandria, VA
- Average rainfall in January:
2.05" - Average rainfall in February:
2.17" - Average rainfall in March:
2.44" - Average rainfall in April:
2.76" - Average rainfall in May:
2.95" - Average rainfall in June:
2.6"
- Average rainfall in July:
2.95" - Average rainfall in August:
3.43" - Average rainfall in September:
1.93" - Average rainfall in October:
2.56" - Average rainfall in November:
2.17" - Average rainfall in December:
2.68"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days
Alexandria, VA
- Average rainfall days in January:
9.9 days - Average rainfall days in February:
10.6 days - Average rainfall days in March:
14.4 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
14.5 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
15.9 days - Average rainfall days in September:
11.9 days - Average rainfall days in October:
12 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
10.6 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall
Alexandria, VA
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Alexandria, VA
- Average snowfall days in January:
4.5 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
2.6 days - Average snowfall days in April:
0.1 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:
2.5 days
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 sea temperature
Alexandria, VA
The best month for swimming (with the highest average sea temperature) is August (78°F).
The coldest month (with the lowest average sea temperature) is February (45.2°F).
Average daylight / Average sunshine
Alexandria, VA
- 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 12min - Average sunshine in February:
5h and 6min - Average sunshine in March:
6h and 54min - Average sunshine in April:
8h and 54min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 12min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 12min
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 6min).
Average sunshine days
Alexandria, VA
- Average sunshine days in January:
17.6 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
12.4 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
13.7 days
- Average sunshine days in July:
12.7 days - Average sunshine days in August:
13.7 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
19.8 days - Average sunshine days in December:
17.4 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.5 days).
Average UV index
Alexandria, VA
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
Alexandria, VA
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Alexandria, VA
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
