Ben Lomond forecast: Tuesday 29 September -7–6°C, some frost risk (57%); Wednesday 30 September -0–4°C, around 0.9 mm rain, gusts near 62 km/h; Thursday 1 October 2–6°C, about 7 mm rain. Across the forecast period, the lowest forecast minimum is -8.3°C, the wettest 24-hour period is around 10.8 mm and peak gusts reach about 62 km/h.
| Date | Min °C | Max °C | Rain (24 h, mm) | Wind Max (km/h) | Gust Max (km/h) | Wet-bulb Max (°C) | Heat Index Max (°C) | Apparent Max (°C) | Frost Risk Max (%) | Chill Hours (h) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-29 | -7.3 | 5.6 | — | 12 | 51 | 9.2 | 13.9 | 10.4 | 57% | — |
| 2026-09-30 | -0.1 | 3.9 | 0.9 | 20 | 62 | 11.1 | 11.1 | 7.9 | 0 | 0 |
| 2026-10-01 | 1.9 | 6.5 | 7.1 | 12 | 39 | 10.7 | 15.1 | 12.1 | 0 | 0 |
| 2026-10-02 | -3.1 | 0.8 | 10.8 | 15 | 18 | 4.0 | 9.3 | 4.2 | 25 | 6 |
| 2026-10-03 | -8.3 | 1.8 | 0.0 | 10 | 12 | 5.6 | 10.4 | 6.6 | 60% | 15 |
| 2026-10-04 | -6.0 | 2.9 | 0.0 | 7 | 10 | 6.4 | 11.7 | 8.9 | 46% | 15 |
| 2026-10-05 | -8.1 | 6.9 | 0.0 | 4 | 7 | 9.0 | 15.7 | 13.9 | 58% | 15 |
| 2026-10-06 | -3.6 | — | — | — | — | — | — | — | 22 | — |