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How much rain fell in Aldenham, Hertfordshire? Daily, weekly and monthly totals averaged over the Environment Agency rain gauges within 15km, updated every 15 minutes.
Next 24 hours: little or no rain forecast for the area around Aldenham (under 0.2mm).
A computer model forecast (DWD ICON) for a square about 15 km across, updated 05:05 UK time. It is a forecast, not a measurement, and not a Met Office forecast. Weather data by Open-Meteo (CC BY 4.0).
Daily totals for UK days from the same computer model; "dry" means under 0.2mm. Forecasts further ahead are less certain.
| Gauge | Distance | Yesterday | 7 days | October | Today |
|---|---|---|---|---|---|
| Rainfall gauge nr Aldenham | 0.0km | 4.4mm | 66.5mm | 104.9mm | 5.1mm |
| Rainfall gauge nr Bushey nr Bushey | 2.3km | 4.0mm | 68.6mm | 90.8mm | 4.6mm |
| Rainfall gauge nr St Albans nr St Albans | 8.5km | 3.6mm | 54.0mm | 70.4mm | 3.2mm |
Daily totals 27 Sep–26 Oct. Wettest day: 17.1mm.
16 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Aldenham, against a full-month average of 17.0 rain days (based on 2 months of records at this gauge).
2026 so far: 441 mm (1 Jan to 26 Oct), against 519 mm by the same date in an average year (2000–2025) — 15% drier.
One bar per calendar year, the average of 8 local rain gauges: the Environment Agency's quality-checked daily archive, then live telemetry for the latest months. Wettest: 2000 (955 mm). Driest: 2005 (453 mm). Average: 671 mm a year. Striped years have gaps in the record, so no total is shown for them.
Daily totals are the average of 8 local rain gauges, for UTC days; one gauge can catch much more than the average. A storm's figure adds up the rain measured on its dates, from our list of Met Office named storms and major floods — other weather on those days counts too.
Aldenham gets about 691 mm of rain a year on average (wettest month October, 75 mm; driest March, 42 mm). That is drier than the UK as a whole, which averages 1,163 mm a year.
Monthly averages in mm. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 3.3 km from the town's gauge centre. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0. UK comparison: Met Office HadUK-Grid areal series, 1991-2020, Open Government Licence v3.0.
Rain gauge River gauge Storm overflow
Nearest gauge on it: Watford, 3.2 km away: 0.20 m Steady.
Every gauge on the River Colne →A level is shown only when the gauge's latest reading is under 6 hours old. Distances are straight-line from the centre of Aldenham's monitored area.
1 storm overflow within 5 km of the centre of Aldenham's monitored area. The 1 with a live status is not discharging right now.
Event Duration Monitors show when an overflow may be spilling; they do not confirm it, and this is not advice on water quality. A live status older than two hours counts as no current status. Live status: © Thames Water storm overflow activity data, licensed under CC BY 4.0. Annual spill figures: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence (OGL) v3.0.
Village in Hertfordshire, England
Aldenham is a village and civil parish in the borough of Hertsmere in Hertfordshire, England. The parish includes Radlett and Letchmore Heath as well as Aldenham village itself. The village of Aldenham lies 3.5 miles (5.6 km) north-east of Watford and 2 miles (3.2 km) southwest of Radlett. Aldenham was mentioned in the Domesday Book of 1086, and is one of Hertsmere's 14 conservation areas. The village has eight pre-19th-century listed buildings and the parish itself is largely unchanged, though buildings have been rebuilt, since Saxon times when the majority of the land was owned by the abbots of Westminster Abbey.
From Wikipedia, the free encyclopedia (CC BY-SA 4.0).
3.5mm of rain fell yesterday (26 Oct 2026), from the average of 9 rain gauges within 15km of Aldenham.
October so far: 73.3mm vs 70.2mm October average — 4% wetter (the average covers the whole month; we are 27 days in). Figures are the average of 9 rain gauges within 15km.
Rainfall gauge nr Aldenham is the nearest rain gauge, 0.0km from the centre of Aldenham's monitored area. Rain gauges can be several kilometres from the town itself, so very local downpours may not register exactly.
16 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Aldenham, against a full-month average of 17.0 rain days.
2000 was the wettest year in the record since 2000, with 955 mm from the average of 8 local rain gauges, against an average of 671 mm a year. The driest was 2005, with 453 mm.
15 Sep 2016: 52.9 mm on average across 8 local rain gauges, and up to 67.9 mm at one of them. Records since 1 Jan 2000.
Rainfall data: Environment Agency rain gauges, synced every 15 minutes. Daily totals are computed overnight (UTC days); "today so far" is live. Gauge distances are straight-line from the centre of Aldenham's monitored area — local rainfall can vary over short distances.
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