Herndon Weather Forecast for
Th, 9 May
2:00
5:00
8:00
11:00
14:00
17:00
20:00
23:00
Air temperature, °C
+19
+18
+20
+26
+28
+29
+25
+21
Real feel, °C
+19
+18
+20
+26
+28
+29
+25
+21
Average wind speed, m/s
2
2
2
4
5
4
2
1
Wind gusts, m/s
7
8
8
14
18
16
10
8
Wind direction
W
SW
W
W
W
W
N
N
Birch pollen, points
—
—
—
—
—
—
—
—
Grass pollen, points
—
—
—
—
—
—
—
—
Ragweed pollen, points
—
—
—
—
—
—
—
—
Precipitation in liquid equivalent, mm
1.1
0.1
0
0
0
0
0
0
Falling snow, cm
—
—
—
—
—
—
—
—
Snow depth, cm
—
—
—
—
—
—
—
—
Pressure, mmHg
742
742
743
743
744
744
745
746
Relative humidity, %
70
74
71
44
35
34
42
54
UV Index, points
0
0
2
5
7
7
1
0
Geomagnetic activity, Kp-index
2
2
2
2
2
2
2
2
Sun and Moon
Daylight hours: 14 h 8 min
Sunrise — 6:02
Sunset — 20:10
The day will 18 minutes longer than today
Waxing Moon: 3%
Moonset — 21:16 (8 May)
Moonrise — 6:45
Full Moon — 23 May, in 14 days