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 Jun 2026 – 30 Jun 2026
Rainfall over this period was 130% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year.
Rainfall vs 10-yr avg
130%
143 mm vs 110 mm typical
Rain days >5mm
11
typical: 7.3
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 Jun 2026 | 18.0 | 11.5 | 18.2 | 31 | wet |
| 2 Jun 2026 | 11.4 | 12.2 | 16.1 | 27 | wet |
| 3 Jun 2026 | 7.9 | 11.5 | 16.4 | 40 | wet |
| 4 Jun 2026 | 7.4 | 10.7 | 14.8 | 39 | wet |
| 5 Jun 2026 | 2.7 | 9.2 | 14.3 | 25 | |
| 6 Jun 2026 | 3.2 | 9.8 | 16.0 | 32 | |
| 7 Jun 2026 | 7.7 | 10.3 | 16.3 | 31 | wet |
| 8 Jun 2026 | 6.8 | 10.1 | 13.5 | 27 | wet |
| 9 Jun 2026 | 11.5 | 8.1 | 12.5 | 38 | wet |
| 10 Jun 2026 | 11.4 | 7.4 | 12.8 | 27 | wet |
| 11 Jun 2026 | 20.8 | 7.7 | 14.5 | 30 | wet |
| 12 Jun 2026 | 6.6 | 12.1 | 17.0 | 44 | wet |
| 13 Jun 2026 | 2.2 | 10.2 | 13.8 | 40 | |
| 14 Jun 2026 | 0.0 | 9.8 | 16.2 | 23 | |
| 15 Jun 2026 | 1.0 | 8.2 | 17.0 | 22 | |
| 16 Jun 2026 | 1.4 | 11.9 | 20.1 | 21 | |
| 17 Jun 2026 | 1.2 | 14.3 | 18.8 | 26 | |
| 18 Jun 2026 | 1.5 | 11.9 | 21.7 | 28 | |
| 19 Jun 2026 | 1.3 | 14.8 | 21.5 | 31 | |
| 20 Jun 2026 | 1.6 | 12.3 | 18.2 | 24 | |
| 21 Jun 2026 | 0.1 | 11.1 | 22.9 | 17 | |
| 22 Jun 2026 | 0.0 | 15.3 | 24.9 | 21 | |
| 23 Jun 2026 | 0.5 | 16.9 | 28.1 | 21 | |
| 24 Jun 2026 | 0.0 | 15.7 | 25.7 | 17 | |
| 25 Jun 2026 | 0.0 | 17.9 | 28.8 | 25 | |
| 26 Jun 2026 | 2.2 | 18.1 | 30.7 | 28 | |
| 27 Jun 2026 | 4.3 | 15.7 | 25.4 | 32 | |
| 28 Jun 2026 | 2.1 | 14.0 | 18.6 | 30 | |
| 29 Jun 2026 | 0.7 | 11.6 | 18.0 | 25 | |
| 30 Jun 2026 | 7.9 | 12.9 | 19.9 | 22 | wet |
11 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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