Daily rainfall, frost and wind for Northampton against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
NN1 1DE · 1 Oct 2025 – 31 Oct 2025
Rainfall over this period was 67% of the 10-year average for the same calendar window at this location. Conditions were drier than typical for the time of year. 1 day had gusts at or above 47 mph.
Rainfall vs 10-yr avg
67%
49 mm vs 73 mm typical
Rain days >5mm
4
typical: 4.4
Frost days
0
typical: 0.1
High-wind days
1
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Oct 2025 | 0.5 | 9.7 | 17.8 | 23 | |
| 2 Oct 2025 | 0.0 | 9.7 | 18.0 | 31 | |
| 3 Oct 2025 | 13.1 | 13.9 | 17.3 | 46 | wet |
| 4 Oct 2025 | 0.8 | 10.0 | 15.7 | 58 | wind |
| 5 Oct 2025 | 0.1 | 10.2 | 15.1 | 44 | |
| 6 Oct 2025 | 0.2 | 9.9 | 18.3 | 21 | |
| 7 Oct 2025 | 0.0 | 10.8 | 16.4 | 24 | |
| 8 Oct 2025 | 0.2 | 9.1 | 15.5 | 18 | |
| 9 Oct 2025 | 0.0 | 7.9 | 14.6 | 21 | |
| 10 Oct 2025 | 0.1 | 9.4 | 15.3 | 17 | |
| 11 Oct 2025 | 0.0 | 8.2 | 14.1 | 14 | |
| 12 Oct 2025 | 0.0 | 4.7 | 13.8 | 11 | |
| 13 Oct 2025 | 0.2 | 10.0 | 14.4 | 18 | |
| 14 Oct 2025 | 0.2 | 10.2 | 13.2 | 17 | |
| 15 Oct 2025 | 0.2 | 9.6 | 12.2 | 16 | |
| 16 Oct 2025 | 0.1 | 9.3 | 13.9 | 13 | |
| 17 Oct 2025 | 0.0 | 9.3 | 13.5 | 11 | |
| 18 Oct 2025 | 0.0 | 9.0 | 14.2 | 22 | |
| 19 Oct 2025 | 7.0 | 10.3 | 13.9 | 26 | wet |
| 20 Oct 2025 | 4.4 | 10.0 | 14.3 | 26 | |
| 21 Oct 2025 | 0.8 | 10.0 | 14.4 | 30 | |
| 22 Oct 2025 | 3.4 | 7.6 | 13.3 | 18 | |
| 23 Oct 2025 | 7.7 | 6.5 | 11.7 | 38 | wet |
| 24 Oct 2025 | 0.1 | 5.1 | 11.4 | 38 | |
| 25 Oct 2025 | 0.2 | 5.9 | 10.0 | 30 | |
| 26 Oct 2025 | 0.6 | 4.3 | 10.3 | 34 | |
| 27 Oct 2025 | 0.2 | 9.0 | 12.1 | 43 | |
| 28 Oct 2025 | 0.2 | 9.5 | 13.2 | 41 | |
| 29 Oct 2025 | 2.9 | 6.6 | 10.8 | 28 | |
| 30 Oct 2025 | 0.0 | 4.4 | 11.9 | 29 | |
| 31 Oct 2025 | 5.4 | 11.9 | 14.8 | 37 | wet |
4 days with rainfall over 5 mm in this period.
Data: ERA5 reanalysis via Open-Meteo, taken at the nearest model grid point to the postcode — not a Met Office station record. Baselines are the mean of the same calendar months over the previous 10 years at this location. Whether conditions meet a contractual test (e.g. JCT “exceptionally adverse weather” or an NEC 1-in-10-year event) is a matter for the contract — this is a factual weather record, not advice.
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