Daily rainfall, frost and wind for Bolton against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
BL1 1RU · 1 Apr 2025 – 30 Apr 2025
Rainfall over this period was 38% of the 10-year average for the same calendar window at this location. Conditions were drier than typical for the time of year.
Rainfall vs 10-yr avg
38%
27 mm vs 72 mm typical
Rain days >5mm
2
typical: 5.4
Frost days
0
typical: 3.4
High-wind days
0
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Apr 2025 | 0.0 | 5.8 | 13.3 | 27 | |
| 2 Apr 2025 | 0.0 | 4.2 | 13.3 | 31 | |
| 3 Apr 2025 | 0.0 | 5.2 | 15.1 | 32 | |
| 4 Apr 2025 | 0.0 | 5.8 | 15.8 | 33 | |
| 5 Apr 2025 | 0.0 | 4.1 | 12.5 | 30 | |
| 6 Apr 2025 | 0.0 | 3.0 | 12.8 | 23 | |
| 7 Apr 2025 | 0.0 | 0.9 | 13.1 | 15 | |
| 8 Apr 2025 | 0.0 | 1.4 | 14.3 | 11 | |
| 9 Apr 2025 | 0.0 | 4.0 | 12.1 | 18 | |
| 10 Apr 2025 | 0.0 | 1.8 | 14.7 | 16 | |
| 11 Apr 2025 | 0.0 | 3.8 | 17.2 | 13 | |
| 12 Apr 2025 | 0.0 | 6.9 | 17.5 | 22 | |
| 13 Apr 2025 | 1.9 | 5.9 | 10.3 | 25 | |
| 14 Apr 2025 | 0.7 | 3.2 | 12.5 | 40 | |
| 15 Apr 2025 | 1.9 | 6.4 | 11.9 | 19 | |
| 16 Apr 2025 | 9.6 | 6.1 | 8.5 | 38 | wet |
| 17 Apr 2025 | 0.3 | 4.1 | 12.1 | 19 | |
| 18 Apr 2025 | 3.8 | 7.5 | 12.3 | 29 | |
| 19 Apr 2025 | 0.0 | 6.4 | 11.8 | 29 | |
| 20 Apr 2025 | 0.0 | 3.2 | 13.4 | 18 | |
| 21 Apr 2025 | 5.4 | 6.6 | 11.7 | 16 | wet |
| 22 Apr 2025 | 0.6 | 4.5 | 13.6 | 21 | |
| 23 Apr 2025 | 2.3 | 7.0 | 15.3 | 23 | |
| 24 Apr 2025 | 0.0 | 5.0 | 13.6 | 15 | |
| 25 Apr 2025 | 0.0 | 5.1 | 13.8 | 20 | |
| 26 Apr 2025 | 0.5 | 7.5 | 13.3 | 19 | |
| 27 Apr 2025 | 0.3 | 6.4 | 16.8 | 20 | |
| 28 Apr 2025 | 0.0 | 7.3 | 17.7 | 10 | |
| 29 Apr 2025 | 0.0 | 10.4 | 21.5 | 18 | |
| 30 Apr 2025 | 0.0 | 10.4 | 23.5 | 11 |
2 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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