Data source: Meteostat・Last updated: 2025-09
Spring (March–May): Average 10.3–19.6°C, mild and comfortable climate with gradually increasing temperatures and moderate rainfall. Common activities: Visiting museums, exploring national parks, flower viewing. Recommended clothing: Light jacket, long-sleeved shirts, comfortable shoes.
Summer (June–August): Average 24.8–27.9°C, hot and humid, with the most rainfall in July. Common activities: Outdoor activities, visiting the Smithsonian museums, touring the Potomac River. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 16.3–22.7°C, pleasantly cool with colorful fall foliage. Common activities: Viewing fall foliage, visiting farms, enjoying autumnal cuisine. Recommended clothing: Light jacket, long-sleeved shirts, comfortable shoes.
Winter (December–February): Average 4.4–7.0°C, cold with occasional snowfall. Common activities: Visiting indoor attractions, museums, shopping. Recommended clothing: Warm coat, scarf, hat, gloves.
Annual average temperature: approx. 16°C / Annual rainfall: approx. 989 mm / Summer humidity: 60%–75% / Rainiest month: July
| Month | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature | 4.4°C | 7°C | 10.3°C | 15.5°C | 19.6°C | 24.8°C | 27.9°C | 26.4°C | 22.7°C | 16.3°C | 11.4°C | 5.8°C |
| Rainfall (mm) | 94.7 | 49.3 | 78.3 | 80.3 | 101.7 | 52.3 | 160.3 | 90.7 | 69.7 | 42 | 59 | 111.3 |
| Date | 11/5Thursday | 11/6Friday | 11/7Saturday | 11/8Sunday | 11/9Monday | 11/10Tuesday | 11/11Wednesday |
|---|---|---|---|---|---|---|---|
| Weather | Patchy rain nearby | Light rain shower | Sunny | Sunny | Sunny | Sunny | Partly Cloudy |
| High | 23.1°C | 21.2°C | 16.8°C | 16.1°C | 17.8°C | 19°C | 18.6°C |
| Low | 17.5°C | 16.5°C | 9.8°C | 9°C | 9.2°C | 6.6°C | 8.1°C |