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 Feb 2026 – 28 Feb 2026
Rainfall over this period was 200% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year.
Rainfall vs 10-yr avg
200%
99 mm vs 50 mm typical
Rain days >5mm
7
typical: 3.4
Frost days
1
typical: 5.8
High-wind days
0
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Feb 2026 | 1.3 | 3.9 | 8.7 | 17 | |
| 2 Feb 2026 | 0.6 | 3.4 | 8.3 | 29 | |
| 3 Feb 2026 | 2.8 | 1.0 | 6.1 | 29 | |
| 4 Feb 2026 | 11.3 | 0.8 | 9.0 | 28 | wet |
| 5 Feb 2026 | 8.1 | 4.4 | 6.6 | 30 | wet |
| 6 Feb 2026 | 13.3 | 5.6 | 8.2 | 23 | wet |
| 7 Feb 2026 | 1.2 | 5.1 | 10.2 | 26 | |
| 8 Feb 2026 | 3.5 | 5.5 | 10.1 | 25 | |
| 9 Feb 2026 | 0.4 | 5.8 | 9.9 | 24 | |
| 10 Feb 2026 | 2.1 | 5.7 | 9.7 | 20 | |
| 11 Feb 2026 | 0.8 | 5.3 | 12.0 | 32 | |
| 12 Feb 2026 | 0.8 | 4.7 | 8.0 | 16 | |
| 13 Feb 2026 | 7.3 | 2.0 | 4.7 | 26 | wet |
| 14 Feb 2026 | 0.7 | -1.2 | 5.1 | 22 | frost |
| 15 Feb 2026 | 10.0 | 1.5 | 7.5 | 32 | wet |
| 16 Feb 2026 | 2.8 | 4.0 | 7.3 | 37 | |
| 17 Feb 2026 | 0.0 | 0.6 | 4.4 | 32 | |
| 18 Feb 2026 | 3.3 | 0.3 | 5.0 | 39 | |
| 19 Feb 2026 | 5.7 | 1.9 | 4.8 | 30 | wet |
| 20 Feb 2026 | 4.6 | 3.1 | 10.3 | 41 | |
| 21 Feb 2026 | 1.3 | 7.6 | 12.5 | 36 | |
| 22 Feb 2026 | 1.0 | 8.6 | 12.9 | 34 | |
| 23 Feb 2026 | 2.2 | 8.2 | 12.0 | 36 | |
| 24 Feb 2026 | 0.2 | 9.5 | 14.4 | 32 | |
| 25 Feb 2026 | 0.0 | 8.7 | 15.2 | 27 | |
| 26 Feb 2026 | 2.6 | 9.4 | 13.1 | 42 | |
| 27 Feb 2026 | 7.6 | 7.5 | 13.7 | 27 | wet |
| 28 Feb 2026 | 3.7 | 4.0 | 8.6 | 32 |
7 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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