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 2026 – 30 Apr 2026
Rainfall over this period was 81% of the 10-year average for the same calendar window at this location. Conditions were broadly in line with typical for the time of year. 1 day had gusts at or above 47 mph.
Rainfall vs 10-yr avg
81%
58 mm vs 72 mm typical
Rain days >5mm
2
typical: 5.4
Frost days
0
typical: 3.4
High-wind days
1
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Apr 2026 | 1.9 | 5.1 | 11.5 | 27 | |
| 2 Apr 2026 | 1.8 | 2.6 | 10.0 | 21 | |
| 3 Apr 2026 | 4.8 | 4.8 | 13.2 | 43 | |
| 4 Apr 2026 | 2.6 | 3.9 | 11.9 | 52 | wind |
| 5 Apr 2026 | 3.2 | 2.8 | 7.2 | 44 | |
| 6 Apr 2026 | 0.0 | 0.9 | 11.9 | 24 | |
| 7 Apr 2026 | 0.0 | 6.1 | 17.3 | 29 | |
| 8 Apr 2026 | 0.0 | 8.0 | 18.3 | 17 | |
| 9 Apr 2026 | 2.5 | 4.7 | 10.6 | 39 | |
| 10 Apr 2026 | 0.3 | 2.7 | 8.7 | 31 | |
| 11 Apr 2026 | 10.1 | 4.4 | 7.8 | 41 | wet |
| 12 Apr 2026 | 4.8 | 3.8 | 10.7 | 36 | |
| 13 Apr 2026 | 1.3 | 1.4 | 11.3 | 19 | |
| 14 Apr 2026 | 2.1 | 2.2 | 11.9 | 27 | |
| 15 Apr 2026 | 12.9 | 8.0 | 15.0 | 39 | wet |
| 16 Apr 2026 | 1.7 | 7.5 | 14.0 | 31 | |
| 17 Apr 2026 | 3.6 | 7.9 | 13.3 | 30 | |
| 18 Apr 2026 | 2.3 | 5.8 | 10.9 | 30 | |
| 19 Apr 2026 | 0.0 | 3.7 | 10.5 | 20 | |
| 20 Apr 2026 | 0.4 | 2.0 | 11.5 | 18 | |
| 21 Apr 2026 | 0.0 | 4.4 | 12.0 | 38 | |
| 22 Apr 2026 | 0.0 | 3.7 | 12.8 | 35 | |
| 23 Apr 2026 | 0.0 | 3.3 | 14.7 | 28 | |
| 24 Apr 2026 | 0.0 | 1.4 | 17.5 | 13 | |
| 25 Apr 2026 | 0.0 | 5.2 | 17.5 | 23 | |
| 26 Apr 2026 | 0.0 | 5.2 | 16.5 | 18 | |
| 27 Apr 2026 | 2.1 | 6.2 | 14.8 | 22 | |
| 28 Apr 2026 | 0.0 | 6.4 | 11.8 | 26 | |
| 29 Apr 2026 | 0.0 | 4.7 | 15.2 | 34 | |
| 30 Apr 2026 | 0.0 | 5.9 | 19.4 | 31 |
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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