September 2021
Weather in Letchworth Garden City, day by day
Mean temperature
16.7°C
Station average 15.4°C
Highest
30.2°C
On Tue 7 Sep
Lowest
6.9°C
On Thu 30 Sep
Rain
51.2 mm
106% of the station average, 48.2 mm
Wet days
9
With 0.2 mm of rain or more
Wettest day
19.8 mm
On Tue 14 Sep
Strongest gust
22 mph
On Thu 30 Sep
Highest pressure
1030.7 hPa
Lowest 999.3 hPa
How it compares
The 4th warmest September of the 17 on record, and the warmest since 2016.
The 7th wettest September of the 17 on record, and the wettest since 2019.
Day by day
| Day | High | Low | Rain | Gust |
|---|---|---|---|---|
| Wed 1 | 17.2°C | 12.9°C | 0.0 mm | 13 mph |
| Thu 2 | 18.5°C | 13.1°C | 0.0 mm | 14 mph |
| Fri 3 | 21.0°C | 14.1°C | 0.0 mm | 11 mph |
| Sat 4 | 19.4°C | 12.2°C | 0.0 mm | 9 mph |
| Sun 5 | 25.9°C | 11.9°C | 0.0 mm | 9 mph |
| Mon 6 | 28.3°C | 13.7°C | 0.0 mm | 6 mph |
| Tue 7 | 30.2°C | 16.7°C | 0.0 mm | 9 mph |
| Wed 8 | 29.0°C | 16.2°C | 0.6 mm | 13 mph |
| Thu 9 | 22.8°C | 16.3°C | 1.2 mm | 13 mph |
| Fri 10 | 21.3°C | 16.3°C | 5.4 mm | 11 mph |
| Sat 11 | 21.8°C | 15.0°C | 0.0 mm | 12 mph |
| Sun 12 | 20.3°C | 12.5°C | 0.0 mm | 7 mph |
| Mon 13 | 20.4°C | 12.1°C | 0.0 mm | 10 mph |
| Tue 14 | 16.7°C | 13.5°C | 19.8 mm | 12 mph |
| Wed 15 | 19.4°C | 12.7°C | 0.2 mm | 10 mph |
| Thu 16 | 21.9°C | 10.5°C | 0.0 mm | 9 mph |
| Fri 17 | 20.2°C | 12.9°C | 0.0 mm | 11 mph |
| Sat 18 | 23.4°C | 12.1°C | 0.0 mm | 10 mph |
| Sun 19 | 18.5°C | 14.5°C | 0.0 mm | 5 mph |
| Mon 20 | 19.4°C | 11.3°C | 0.0 mm | 12 mph |
| Tue 21 | 21.2°C | 9.1°C | 0.0 mm | 5 mph |
| Wed 22 | 20.9°C | 10.3°C | 0.0 mm | 12 mph |
| Thu 23 | 22.2°C | 11.4°C | 0.0 mm | 12 mph |
| Fri 24 | 23.9°C | 11.6°C | 0.0 mm | 12 mph |
| Sat 25 | 18.3°C | 14.2°C | 0.0 mm | 6 mph |
| Sun 26 | 22.1°C | 13.7°C | 0.0 mm | 15 mph |
| Mon 27 | 17.7°C | 10.9°C | 5.2 mm | 17 mph |
| Tue 28 | 17.6°C | 9.4°C | 16.8 mm | 18 mph |
| Wed 29 | 14.4°C | 7.3°C | 0.8 mm | 12 mph |
| Thu 30 | 15.1°C | 6.9°C | 1.2 mm | 22 mph |
Weather fronts
- Likely cold front · Mon 27 Sep, 08:45
- Likely cold front · Tue 28 Sep, 21:30
Found automatically from this station’s readings alone, so likely rather than certain. What’s a front?
September in other years
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Rainfall up to yesterday is from the Environment Agency’s rain gauges near Letchworth: the station’s own gauge is sheltered by nearby buildings and trees and catches less than falls. Today’s is the station’s. Contains Environment Agency information © Environment Agency and/or database right, under the Open Government Licence.