Lamoille Canyon Half & 5K weather.

Each row is the race's date that year where we know it, else the same weekday nearest its usual date. Temperatures and humidity are averaged over 07:00 to 11:00 local time, rain is the total over those hours, and conditions are the commonest over the morning. The half marathon starts at 06:00.

• Mild: start a touch conservatively

  Around 14°C feels fine at the start but warms up by the second half. Drink from the early stations rather than waiting until you're thirsty, and wear the lightest kit you have.

• Have a warm-day plan

  In the warmest of these years it reached 26°C by late morning. Decide in advance how much you'd slow down if the forecast is warm, rather than on the course.

• It can be cold

  The coolest morning here dropped to 2°C. Pack gloves and a throwaway layer even if the forecast looks kind.

• The weather varies a lot

  Race mornings here have ranged by 18°C from year to year. Pack for both, and settle your kit and pacing from the forecast in the last few days.

General guidance from past years' numbers. Check the forecast in race week.