Alexandria, Virginia Weather
Day 93 of summer. Read today’s microseason across nine climate regions →
Alexandria weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 10:21 AM EDT · Open-Meteo
- TodaySep 21Overcast later13%—77°68°—
- TuesdaySep 22Rain82%1.2″68°60°-9°
- WednesdaySep 23Light Rain82%0.33″61°54°-7°
- ThursdaySep 24Overcast33%—67°55°+6°
- FridaySep 25Clear15%—71°51°+4°
- SaturdaySep 26Clear15%—73°53°+2°
- SundaySep 27Overcast——76°55°+3°
Air quality now AQI 51 · Moderate
AQI 51 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.4 µg/m³, PM10 at 5.5 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 5.4 µg/m³, PM10 at 5.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.98
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:37 PM
- Moonset
- 1:31 AM
- In sign
- ♑︎ Capricorn
Alexandria at a glance
- Today vs. normal: Today averages 73°F (high 77°F, low 68°F), 4°F above the 69°F normal for Sep 21
- Last frost: March 24 (1991–2020 median, NOAA station 6 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant beans, squash, fall brassicas, carrots; harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Alexandria
- Mon77°68°13%
- Tue68°60°82%
- Wed61°54°82%
- Thu67°55°33%
- Fri71°51°15%
- Sat73°53°15%
- Sun76°55°8%
- Mon79°59°5%
- Tue80°59°10%
- Wed81°61°17%
- Thu82°63°15%
- Fri80°62°16%
- Sat80°60°26%
- Sun77°62°19%
- Mon72°56°16%
- Tue64°49°16%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Alexandria
Interactive wind and temperature map centered on Alexandria — it loads in your browser. Open the full weather map.
Right now in the garden
Late season
As of September 21, the first frost (around November 18) is about 8 weeks away. Frost-tender plants keep producing until then. This city's planting calendar for September: plant beans, squash, fall brassicas, and carrots; harvest tomatoes, peppers, beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Alexandria
SPC includes Alexandria in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Alexandria
Alexandria sits in Alexandria County, where the year’s longest day runs 14h 53m of daylight and its shortest just 9h 27m — a swing of +5h 27m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Virginia Beach, the state’s largest city, lies about 155 miles to the SSE. The nearest town Alexandria tracks is Arlington, roughly 4 miles to the N.
Air quality in Alexandria
Air quality in Alexandria’s county has held roughly steady since 2021; its cleanest year on record was 2021 (median AQI 6). See the full air-quality history for Alexandria.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | radishes |
| April | lettuce, peas, spinach, radishes | lettuce, spinach, radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, beans, summer squash, garlic |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash |
| August | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| September | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| November | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| December | — | fall brassicas, carrots |
A year in weather
July is Alexandria's warmest stretch (~79°F) and January its coldest (~34°F); precipitation crests in August at 4.2 inches and ebbs in October to 2.6 inches.
| Month | Mean temp | Precip |
|---|---|---|
| January | 34° | 3.4″ |
| February | 37° | 2.8″ |
| March | 45° | 3.4″ |
| April | 56° | 3.6″ |
| May | 64° | 3.4″ |
| June | 73° | 3.8″ |
| July | 79° | 3.2″ |
| August | 78° | 4.2″ |
| September | 71° | 3.2″ |
| October | 60° | 2.6″ |
| November | 47° | 3.5″ |
| December | 38° | 3.8″ |
Regional context
Similar climates Huntington, VA, Rose Hill, VA, Bailey's Crossroads, VA
By modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Alexandria sees 34°F Januarys and 79°F Julys, a 45°F range, plus around 41 inches of precipitation.
No season owns Alexandria's rain: August reaches 4.2 inches and October keeps 2.6 inches, an even spread through Alexandria's year. That even rhythm groups Alexandria with places like Huntington, VA, Rose Hill, VA and Bailey's Crossroads, VA.
Alexandria's growing window opens around March 24, once Alexandria's overnight lows stop freezing — sow peas, lettuce, spinach, and radishes. Warm-soil crops in Alexandria wait about two weeks past Alexandria's last frost, once the soil warms. It shuts near November 18, when freezes return to Alexandria and tender plants need cover. In about half of years, Alexandria's last freeze comes after March 24.
Similar climates: Huntington, VA, Rose Hill, VA, Bailey's Crossroads, VA, Belle Haven, VA, Lincolnia, VA.
Frequently asked
- When does it freeze in Alexandria?
- Alexandria's last spring frost lands near March 24, and in Alexandria the first fall frost follows around November 18.
- What is the rainy season in Alexandria?
- August is the wettest month in Alexandria, about 4.2 inches on average; the year totals roughly 41 inches.
- What is the warmest month in Alexandria?
- July is Alexandria's warmest month, averaging about 79°F.
- What is the coldest month in Alexandria?
- Alexandria bottoms out in January, with a mean near 34°F.
- When can I start a vegetable garden in Alexandria?
- Time tomatoes in Alexandria for two weeks after March 24; peas and greens start at Alexandria's frost line.
- What hardiness zone is Alexandria?
- Alexandria's USDA zone comes from its January mean (34°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Alexandria?
- Alexandria's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Alexandria?
- See this week's day-by-day rain chances for Alexandria in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Alexandria?
- Current conditions for Alexandria and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Alexandria forecast updated?
- The Alexandria forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Alexandria?
- Today's sunrise and sunset times for Alexandria are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Alexandria?
- The next few days in Alexandria's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Alexandria sits at 38.8°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Alexandria
- 20598
- 22301
- 22302
- 22303
- 22304
- 22305
- 22306
- 22307
- 22308
- 22309
- 22310
- 22311
- 22312
- 22314
- 22315
- 22320
- 22331
- 22332
- 22333
- 22334