Harpenden Weather Forecast for
Th, 18 April
1:00
4:00
7:00
10:00
13:00
16:00
19:00
22:00
Air temperature, °C
+3
+2
+3
+8
+11
+12
+11
+9
Real feel, °C
+3
-1
0
+6
+9
+11
+10
+6
Average wind speed, m/s
1
3
3
3
3
4
4
4
Wind gusts, m/s
4
6
6
6
6
9
9
9
Wind direction
NW
NW
N
N
W
W
W
SW
Birch pollen, points
0
0
0
0
0
0
0
0
Grass pollen, points
—
—
—
—
—
—
—
—
Ragweed pollen, points
—
—
—
—
—
—
—
—
Precipitation in liquid equivalent, mm
0
0
0
0
0
0
0
0.2
Falling snow, cm
—
—
—
—
—
—
—
—
Snow depth, cm
0
0
0
0
0
0
0
0
Pressure, mmHg
755
755
757
757
757
756
755
755
Relative humidity, %
83
85
85
69
50
46
49
72
UV Index, points
0
0
1
4
6
4
1
0
Geomagnetic activity, Kp-index
4
3
4
3
1
2
2
2
Sun and Moon
Daylight hours: 14 h 7 min
Sunrise — 5:57
Sunset — 20:04
The day will 8 minutes longer than today
Waxing Moon: 75%
Moonrise — 12:50 (17 April)
Moonset — 4:40
Full Moon — 24 April, in 5 days