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 Oct 2025 – 31 Oct 2025
Rainfall over this period was 103% 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. 2 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
103%
141 mm vs 138 mm typical
Rain days >5mm
9
typical: 9.5
Frost days
0
typical: 0.2
High-wind days
2
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Oct 2025 | 3.8 | 10.7 | 15.6 | 18 | |
| 2 Oct 2025 | 5.3 | 10.4 | 15.8 | 31 | wet |
| 3 Oct 2025 | 33.3 | 12.2 | 17.1 | 50 | wet · wind |
| 4 Oct 2025 | 19.2 | 6.6 | 11.3 | 53 | wet · wind |
| 5 Oct 2025 | 0.6 | 10.1 | 12.5 | 45 | |
| 6 Oct 2025 | 0.1 | 11.7 | 16.5 | 24 | |
| 7 Oct 2025 | 0.8 | 10.3 | 15.6 | 24 | |
| 8 Oct 2025 | 0.2 | 8.8 | 12.9 | 24 | |
| 9 Oct 2025 | 0.1 | 11.3 | 13.3 | 28 | |
| 10 Oct 2025 | 0.3 | 10.9 | 13.4 | 21 | |
| 11 Oct 2025 | 0.0 | 7.0 | 13.5 | 14 | |
| 12 Oct 2025 | 0.0 | 5.3 | 13.5 | 8 | |
| 13 Oct 2025 | 0.0 | 8.1 | 13.8 | 9 | |
| 14 Oct 2025 | 0.0 | 8.2 | 13.4 | 9 | |
| 15 Oct 2025 | 0.0 | 6.7 | 11.9 | 10 | |
| 16 Oct 2025 | 0.0 | 8.1 | 11.0 | 10 | |
| 17 Oct 2025 | 0.2 | 7.6 | 11.9 | 11 | |
| 18 Oct 2025 | 0.3 | 7.6 | 11.3 | 24 | |
| 19 Oct 2025 | 18.0 | 9.7 | 13.1 | 29 | wet |
| 20 Oct 2025 | 4.1 | 9.2 | 13.2 | 18 | |
| 21 Oct 2025 | 4.8 | 9.1 | 11.4 | 32 | |
| 22 Oct 2025 | 1.1 | 7.2 | 11.2 | 18 | |
| 23 Oct 2025 | 3.5 | 6.6 | 9.9 | 34 | |
| 24 Oct 2025 | 9.2 | 5.8 | 9.2 | 27 | wet |
| 25 Oct 2025 | 0.0 | 4.4 | 8.6 | 36 | |
| 26 Oct 2025 | 8.0 | 3.7 | 9.6 | 38 | wet |
| 27 Oct 2025 | 6.4 | 7.7 | 10.0 | 42 | wet |
| 28 Oct 2025 | 3.6 | 8.1 | 10.7 | 42 | |
| 29 Oct 2025 | 5.3 | 6.1 | 10.1 | 22 | wet |
| 30 Oct 2025 | 0.7 | 4.9 | 10.3 | 38 | |
| 31 Oct 2025 | 12.3 | 10.0 | 13.6 | 39 | wet |
9 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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