McHenry Weather in May

McHenry in May sees pleasant temperatures, with highs around 19°C (66°F) and overnight lows of 8°C (46°F). Rainfall is fairly high at around 125 mm (4.9 in) on average, so pack waterproofs just in case.

Rainfall in McHenry in May

Historically, May sees about 17 days of rain, with a monthly average of 125 mm (4.9 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in McHenry in May

Expect highs of 19°C (66°F) in McHenry in May, with nights dropping to around 8°C (46°F). The difference between afternoon and evening temperatures is usually noticeable. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in McHenry in May

The month enjoys around 215 hours of sunshine, creating mostly sunny days with good weather conditions.

If you prefer dry days with pleasant temperatures, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.