Herndon Tomorrow Weather – Forecast, Trends & News - United States of America
Herndon, Virginia, United States of America
Updated every 10 min
Today Conditions
4.1°C
/
-6.3°C
Partly Cloudy
Temperature AVG :
-1.6°C
Wind:
20.9 km/h
Humidity: 64%
Visibility:
10.0 km
Astronomy
Sunrise
07:17 AM
Sunset
04:47 PM
Moon Phase
Waning Gibbous
UV Index
0.3 Good for going out
Moon illumination
78%
Air Quality
1
Good
AQI
PM2.5
5.95 µg/m³
PM10
6.85 µg/m³
O₃
61.0 μg/m3
NO₂
11.05 μg/m3
Herndon 24-Hour Tomorrow Forecast
00:00
Clear
-5.5°C
6.5 km/h
0%
01:00
Clear
-5.9°C
6.1 km/h
0%
02:00
Clear
-6.1°C
5.4 km/h
0%
03:00
Partly Cloudy
-6.2°C
4.3 km/h
0%
04:00
Partly Cloudy
-6.3°C
4.0 km/h
0%
05:00
Cloudy
-5.8°C
2.9 km/h
0%
06:00
Cloudy
-5.3°C
3.6 km/h
0%
07:00
Cloudy
-4.9°C
1.8 km/h
0%
08:00
Overcast
-3.9°C
2.2 km/h
0%
09:00
Overcast
-3.0°C
4.3 km/h
0%
10:00
Overcast
-2.2°C
7.6 km/h
0%
11:00
Partly Cloudy
-0.4°C
11.2 km/h
0%
12:00
Partly Cloudy
1.1°C
14.4 km/h
0%
13:00
Partly Cloudy
2.6°C
15.8 km/h
0%
14:00
Sunny
2.9°C
18.7 km/h
0%
15:00
Partly Cloudy
2.8°C
20.2 km/h
0%
16:00
Partly Cloudy
2.6°C
19.1 km/h
0%
17:00
Partly Cloudy
2.2°C
18.7 km/h
0%
18:00
Partly Cloudy
1.9°C
19.4 km/h
0%
19:00
Partly Cloudy
1.7°C
20.5 km/h
0%
20:00
Overcast
1.6°C
20.9 km/h
0%
21:00
Overcast
1.5°C
18.7 km/h
0%
22:00
Overcast
-1.8°C
16.2 km/h
0%
23:00
Clear
-0.4°C
14.8 km/h
0%
Herndon 5-Day Forecast
Today
Sunny
3.2°C
/
-4.8°C
0%
2025-12-09
Partly Cloudy
4.1°C
/
-6.3°C
0%
2025-12-10
Overcast
5.9°C
/
-0.3°C
0%
2025-12-11
Partly Cloudy
6.2°C
/
-0.6°C
0%
2025-12-12
Patchy rain nearby
4.8°C
/
-1.4°C
86%