Alexandria, VA

Climate overview — based on NOAA 1991-2020 normals from WASHINGTON REAGAN AP, VA US.

Cfa Humid subtropical climate 8b USDA hardiness Zone 8b

Year-round temperatures (°F)

30° 50° 70° 90° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Alexandria has an annual average temperature of 59.3°F with about 41.8 inches of precipitation per year and 13.7 inches of snow. The warmest month is July (average high 89.6°F), and the coldest is January (average low 30.1°F). July is typically the wettest month (4.33 in) and February the driest (2.62 in). Snow typically falls from December through March.

Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
43.5°F
warmest to coldest month
Heating need
3,579
Cooling need
1,539

Best time to visit Alexandria

Full guide →

Climate change signal

All-time records →

44 of 366 (12%) of Alexandria's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1940s
42
1950s
54
1960s
43
1970s
45
1980s
24
1990s
53
2000s
30
2010s
52
2020s
23

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month Avg High Avg Low Avg Temp Precipitation Snow Rainy days
January 44.8°F 30.1°F 37.5°F 2.86 in 4.9 in 10
February 48.3°F 31.8°F 40.0°F 2.62 in 5.0 in 9
March 56.5°F 38.6°F 47.6°F 3.50 in 2.0 in 11
April 68.0°F 48.4°F 58.2°F 3.21 in 11
May 76.5°F 58.0°F 67.2°F 3.94 in 12
June 85.1°F 67.5°F 76.3°F 4.20 in 11
July 89.6°F 72.4°F 81.0°F 4.33 in 11
August 87.8°F 71.0°F 79.4°F 3.25 in 9
September 80.7°F 64.1°F 72.4°F 3.93 in 9
October 69.4°F 52.2°F 60.8°F 3.66 in 8
November 58.2°F 41.6°F 49.9°F 2.91 in 0.1 in 8
December 48.8°F 34.5°F 41.7°F 3.41 in 1.7 in 10

Climate twins of Alexandria

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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