Herndon Weather Forecast for
Su, 5 May
2:00
5:00
8:00
11:00
14:00
17:00
20:00
23:00
Air temperature, °C
+15
+15
+15
+18
+20
+21
+20
+19
Real feel, °C
+15
+15
+15
+18
+20
+21
+20
+19
Average wind speed, m/s
3
3
3
4
5
4
2
—
Wind gusts, m/s
10
9
8
10
13
11
7
4
Wind direction
SE
SE
SE
S
S
S
S
calm
Birch pollen, points
—
—
—
—
—
—
—
—
Grass pollen, points
—
—
—
—
—
—
—
—
Ragweed pollen, points
—
—
—
—
—
—
—
—
Precipitation in liquid equivalent, mm
0.7
3.3
3.3
3.2
0.1
0.1
1.4
4
Falling snow, cm
—
—
—
—
—
—
—
—
Snow depth, cm
0
0
0
0
0
0
0
0
Pressure, mmHg
756
755
755
755
753
752
752
753
Relative humidity, %
77
84
86
67
63
61
66
74
UV Index, points
0
0
1
1
1
1
1
0
Geomagnetic activity, Kp-index
3
3
3
3
3
3
3
3
Sun and Moon
Daylight hours: 14 h 0 min
Sunrise — 6:06
Sunset — 20:06
The day will 10 minutes longer than today
Waning Moon: 8%
Moonset — 16:12 (4 May)
Moonrise — 4:36
New Moon — 7 May, in 3 days