I remember doing something similar last year, but closer to the date. Anyway, the long-range forecast for Derby for BoSM dates this year are as follows. Saturday 8th April Day: Rain Max: 10c (4c RealFeel) Winds: East @ 21mph (Gusts @ 39mph) UV level: 1 Thunderstorm probability: 0% Amount of Precipitation: 1.8mm Hours of Precipitation: 10 (mostly @ 12pm & 6pm) Arthritis index: 3 Night: Mainly cloudy Min: 2c (-4c RealFeel) Winds: East North East @ 15mph (Gusts @ 25mph) Thunderstorm probability: 0% Amount of Precipitation: 0mm Hours of Precipitation: 0 Arthritis index: 1 Sunday 9th April Day: Sunny Max: 11c (7c RealFeel) Winds: East North East @ 19mph (Gusts @ 40 mph) UV Level: 4 Thunderstorm Probability: 0% Amount of Precipitation: 0mm Hours of Precipitation 0 Arthritis Index (0-10) 0 Long range forecasts are always a bit shit, however.