Today
Expect clear. Daytime high +66°, overnight low +50°. Wind up to 7 mph. No rain expected.
Weather in Rosslyn
United States · Virginia · 38.8968, -77.0725
Today Now 10:49 AM
+59° Clear
Hourly forecast
Today10/21
Temperature°F
Cloudiness
Precipitation
Windmph
Wind gusts
Humidity
PressureinHg
Dew point°F
Visibilitymi
UV index
Forecast in words
Tomorrow
Tomorrow clear: daytime +66°, nighttime +45° — almost like today.
Week
Seven days ahead fall within +41°…+68°. Peak warmth: Mon, +68°. Coldest night — Sat, around +41°. The week promises to be dry. Cloudless weather for 7 days.
Week vs norm
- Today 10/21 +66° as usual usually +66°
- Tomorrow 10/22 +66° as usual usually +66°
- Fri 10/23 +61° −5° usually +65°
- Sat 10/24 +61° −4° usually +65°
- Sun 10/25 +64° as usual usually +65°
- Mon 10/26 +68° +4° usually +64°
- Tue 10/27 +63° −1° usually +64°
- Wed 10/28 +57° −6° usually +63°
Difference between forecast daytime high and the 1991–2020 norm for this date.
This day, October 21
Today is cooler than usual for this date.
- Heat record +80° 2024
- Cold record +36° 2022
- Most precipitation 2.6 in 1995
- Strongest gust 43 mph 1995
Records for this calendar date, 1991-2024, ERA5 reanalysis.
Climate in Rosslyn
Today is close to the norm for October.
| Month | Daytime / Nighttime | Average | Precipitation in |
|---|---|---|---|
| Jan | +42° / +28° | +35° | 3.3 |
| Feb | +46° / +30° | +37° | 3.0 |
| Mar | +55° / +36° | +45° | 3.9 |
| Apr | +66° / +46° | +55° | 3.4 |
| May | +74° / +56° | +64° | 3.9 |
| Jun | +83° / +65° | +74° | 3.7 |
| Jul | +88° / +70° | +78° | 4.4 |
| Aug | +86° / +69° | +76° | 3.6 |
| Sep | +79° / +62° | +70° | 4.3 |
| Oct | +68° / +50° | +58° | 3.3 |
| Nov | +57° / +40° | +47° | 2.9 |
| Dec | +47° / +32° | +39° | 3.6 |
Climatic normals for 1991–2025 years from ERA5-Land reanalysis.
Astronomical data
Sunrise / sunset
7:24 AM | 6:21 PM
Moon
4:00 PM | 2:23 AM
Moon phase
Waxing gibbous 78%
Next solar eclipse
Calculating for this city…