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 Jul 2025 – 31 Jul 2025
Rainfall over this period was 62% 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
62%
77 mm vs 124 mm typical
Rain days >5mm
2
typical: 8.2
Frost days
0
typical: 0.0
High-wind days
0
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Jul 2025 | 6.5 | 13.9 | 19.5 | 21 | wet |
| 2 Jul 2025 | 4.0 | 11.5 | 15.6 | 34 | |
| 3 Jul 2025 | 0.6 | 9.7 | 17.5 | 23 | |
| 4 Jul 2025 | 2.2 | 12.2 | 18.5 | 36 | |
| 5 Jul 2025 | 4.6 | 14.4 | 19.1 | 33 | |
| 6 Jul 2025 | 3.3 | 13.6 | 15.9 | 30 | |
| 7 Jul 2025 | 4.7 | 9.3 | 16.3 | 39 | |
| 8 Jul 2025 | 0.0 | 9.3 | 16.4 | 30 | |
| 9 Jul 2025 | 0.1 | 12.9 | 19.8 | 24 | |
| 10 Jul 2025 | 0.0 | 12.3 | 22.7 | 14 | |
| 11 Jul 2025 | 0.0 | 13.3 | 25.6 | 13 | |
| 12 Jul 2025 | 0.0 | 15.1 | 26.2 | 18 | |
| 13 Jul 2025 | 1.7 | 15.1 | 24.7 | 23 | |
| 14 Jul 2025 | 3.1 | 14.1 | 21.5 | 29 | |
| 15 Jul 2025 | 21.8 | 12.6 | 17.0 | 32 | wet |
| 16 Jul 2025 | 0.5 | 13.0 | 19.5 | 23 | |
| 17 Jul 2025 | 0.4 | 13.1 | 20.1 | 22 | |
| 18 Jul 2025 | 4.6 | 15.5 | 21.1 | 18 | |
| 19 Jul 2025 | 2.1 | 14.6 | 20.1 | 17 | |
| 20 Jul 2025 | 3.1 | 13.4 | 20.5 | 25 | |
| 21 Jul 2025 | 3.0 | 12.8 | 19.2 | 17 | |
| 22 Jul 2025 | 2.3 | 14.1 | 17.7 | 24 | |
| 23 Jul 2025 | 0.3 | 13.1 | 17.8 | 23 | |
| 24 Jul 2025 | 0.6 | 13.4 | 19.9 | 23 | |
| 25 Jul 2025 | 0.0 | 10.9 | 21.0 | 23 | |
| 26 Jul 2025 | 1.6 | 13.9 | 18.3 | 25 | |
| 27 Jul 2025 | 0.9 | 12.9 | 16.3 | 23 | |
| 28 Jul 2025 | 1.6 | 12.3 | 17.4 | 27 | |
| 29 Jul 2025 | 2.2 | 11.0 | 17.9 | 17 | |
| 30 Jul 2025 | 0.4 | 14.1 | 17.9 | 25 | |
| 31 Jul 2025 | 1.1 | 13.2 | 17.3 | 27 |
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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