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 Mar 2026 – 31 Mar 2026
Rainfall over this period was 44% of the 10-year average for the same calendar window at this location. Conditions were drier than typical for the time of year. 3 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
44%
27 mm vs 62 mm typical
Rain days >5mm
1
typical: 3.4
Frost days
1
typical: 4.1
High-wind days
3
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Mar 2026 | 0.3 | 4.2 | 12.9 | 32 | |
| 2 Mar 2026 | 0.0 | 7.9 | 14.9 | 34 | |
| 3 Mar 2026 | 0.0 | 5.8 | 11.7 | 18 | |
| 4 Mar 2026 | 0.0 | 3.3 | 12.6 | 15 | |
| 5 Mar 2026 | 0.0 | 3.8 | 16.2 | 17 | |
| 6 Mar 2026 | 0.9 | 5.8 | 9.1 | 18 | |
| 7 Mar 2026 | 0.6 | 5.4 | 7.9 | 14 | |
| 8 Mar 2026 | 0.1 | 6.8 | 11.0 | 17 | |
| 9 Mar 2026 | 0.0 | 5.6 | 11.6 | 17 | |
| 10 Mar 2026 | 0.2 | 5.7 | 11.3 | 35 | |
| 11 Mar 2026 | 1.1 | 6.1 | 10.9 | 38 | |
| 12 Mar 2026 | 2.4 | 5.8 | 11.6 | 56 | wind |
| 13 Mar 2026 | 11.1 | 3.1 | 10.7 | 41 | wet |
| 14 Mar 2026 | 0.9 | 1.0 | 9.6 | 23 | |
| 15 Mar 2026 | 2.0 | 1.8 | 11.2 | 43 | |
| 16 Mar 2026 | 0.1 | 3.9 | 10.8 | 32 | |
| 17 Mar 2026 | 0.0 | 8.4 | 14.1 | 32 | |
| 18 Mar 2026 | 0.0 | 5.7 | 17.5 | 17 | |
| 19 Mar 2026 | 0.0 | 3.6 | 14.9 | 15 | |
| 20 Mar 2026 | 0.0 | 2.7 | 11.4 | 13 | |
| 21 Mar 2026 | 0.0 | 1.7 | 12.2 | 12 | |
| 22 Mar 2026 | 0.0 | -0.3 | 10.9 | 13 | frost |
| 23 Mar 2026 | 0.3 | 5.1 | 12.9 | 18 | |
| 24 Mar 2026 | 1.3 | 8.2 | 12.2 | 51 | wind |
| 25 Mar 2026 | 1.2 | 3.5 | 7.3 | 47 | wind |
| 26 Mar 2026 | 0.0 | 1.1 | 8.7 | 23 | |
| 27 Mar 2026 | 1.5 | 5.0 | 11.3 | 30 | |
| 28 Mar 2026 | 0.2 | 2.9 | 8.6 | 38 | |
| 29 Mar 2026 | 1.0 | 1.6 | 9.4 | 43 | |
| 30 Mar 2026 | 0.8 | 5.8 | 10.2 | 39 | |
| 31 Mar 2026 | 1.2 | 6.1 | 16.0 | 27 |
1 day 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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